/*
FLAM3 - cosmic recursive fractal flames
Copyright (C) 1992-2009 Spotworks LLC
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _MSC_VER /* VC++ */
#define _GNU_SOURCE
#endif
#include "private.h"
#include "img.h"
#include "config.h"
#include "variations.h"
#include "interpolation.h"
#include "parser.h"
#include "filters.h"
#include "palettes.h"
#include <limits.h>
#include <locale.h>
#include <math.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#ifdef HAVE_LIBPTHREAD
#include <pthread.h>
#endif
#ifdef __APPLE__
#include <mach/mach.h>
#include <mach/mach_error.h>
#define flam3_os "OSX"
#else
#ifdef _WIN32
#define WINVER 0x0500
#include <windows.h>
#define flam3_os "WIN"
#else
#define flam3_os "LNX"
#endif
#endif
char *flam3_version() {
if (strcmp(GIT_REV, ""))
return flam3_os "-" GIT_REV;
return flam3_os "-" VERSION;
}
#define CHOOSE_XFORM_GRAIN 16384
#define CHOOSE_XFORM_GRAIN_M1 16383
#define random_distrib(v) ((v)[random()%vlen(v)])
unsigned short *flam3_create_xform_distrib(flam3_genome *cp) {
/* Xform distrib is created in this function */
int numrows;
int dist_row,i;
unsigned short *xform_distrib;
numrows = cp->num_xforms - (cp->final_xform_index>=0) + 1;
xform_distrib = calloc(numrows*CHOOSE_XFORM_GRAIN,sizeof(unsigned short));
/* First, set up the first row of the xform_distrib (raw weights) */
flam3_create_chaos_distrib(cp, -1, xform_distrib);
/* Check for non-unity chaos */
cp->chaos_enable = 1 - flam3_check_unity_chaos(cp);
if (cp->chaos_enable) {
/* Now set up a row for each of the xforms */
dist_row = 0;
for (i=0;i<cp->num_xforms;i++) {
if (cp->final_xform_index == i)
continue;
else
dist_row++;
if (flam3_create_chaos_distrib(cp, i, &(xform_distrib[CHOOSE_XFORM_GRAIN*(dist_row)]))) {
free(xform_distrib);
return(NULL);
}
}
}
return(xform_distrib);
}
/* Run this on a copy of a genome to get a strip of the output */
int flam3_make_strip(flam3_genome *cp, int nstrips, int stripnum) {
double old_center[2];
int j;
/* Strip out motion elements */
for (j=0;j<cp->num_xforms;j++)
flam3_delete_motion_elements(&cp->xform[j]);
old_center[0] = cp->center[0];
old_center[1] = cp->center[1];
cp->height /= nstrips;
cp->center[1] = cp->center[1] - ((nstrips - 1) * cp->height) / (2 * cp->pixels_per_unit * pow(2.0, cp->zoom));
cp->center[1] += cp->height * stripnum / ( cp->pixels_per_unit * pow(2.0,cp->zoom) );
rotate_by(cp->center, old_center, cp->rotate);
return(0);
}
void rotate_by(double *p, double *center, double by) {
double r[2];
double th = by * 2 * M_PI / 360.0;
double c = cos(th);
double s = -sin(th);
p[0] -= center[0];
p[1] -= center[1];
r[0] = c * p[0] - s * p[1];
r[1] = s * p[0] + c * p[1];
p[0] = r[0] + center[0];
p[1] = r[1] + center[1];
}
int flam3_check_unity_chaos(flam3_genome *cp) {
int i,j;
int num_std;
int unity=1;
num_std = cp->num_xforms - (cp->final_xform_index >= 0);
for (i=0;i<num_std;i++) {
for (j=0;j<num_std;j++) {
if ( fabs(cp->chaos[i][j]-1.0) > EPS)
unity=0;
}
}
return(unity);
}
int flam3_create_chaos_distrib(flam3_genome *cp, int xi, unsigned short *xform_distrib) {
/* Xform distrib is a preallocated array of CHOOSE_XFORM_GRAIN chars */
/* address of array is passed in, contents are modified */
double t,r,dr;
int i,j;
int num_std;
//fprintf(stdout,"storing at %ld\n",xform_distrib);
num_std = cp->num_xforms - (cp->final_xform_index >= 0);
dr = 0.0;
for (i = 0; i < num_std; i++) {
double d = cp->xform[i].density;
if (xi>=0)
d *= cp->chaos[xi][i];
//fprintf(stdout,"%f ",d);
if (d < 0.0) {
fprintf(stderr, "xform weight must be non-negative, not %g.\n", d);
return(1);
}
dr += d;
}
//fprintf(stdout,"dr=%f\n",dr);
if (dr == 0.0) {
fprintf(stderr, "cannot iterate empty flame.\n");
return(1);
}
dr = dr / CHOOSE_XFORM_GRAIN;
j = 0;
t = cp->xform[0].density;
if (xi>=0)
t *= cp->chaos[xi][0];
r = 0.0;
for (i = 0; i < CHOOSE_XFORM_GRAIN; i++) {
while (r >= t) {
j++;
if (xi>=0)
t += cp->xform[j].density*cp->chaos[xi][j];
else
t += cp->xform[j].density;
}
//fprintf(stdout,"%d ",j);
xform_distrib[i] = j;
r += dr;
}
//fprintf(stdout,"\n---\n");
return(0);
}
/*
* run the function system described by CP forward N generations. store
* the N resulting 4-vectors in SAMPLES. the initial point is passed in
* SAMPLES[0..3]. ignore the first FUSE iterations.
*/
int flam3_iterate(flam3_genome *cp, int n, int fuse, double *samples, unsigned short *xform_distrib, randctx *rc) {
int i;
double p[4], q[4];
int consec = 0;
int badvals = 0;
int lastxf=0;
int fn;
p[0] = samples[0];
p[1] = samples[1];
p[2] = samples[2];
p[3] = samples[3];
/* Perform precalculations */
for (i=0;i<cp->num_xforms;i++)
xform_precalc(cp,i);
for (i = -4*fuse; i < 4*n; i+=4) {
// fn = xform_distrib[ lastxf*CHOOSE_XFORM_GRAIN + (((unsigned)irand(rc)) % CHOOSE_XFORM_GRAIN)];
if (cp->chaos_enable)
fn = xform_distrib[ lastxf*CHOOSE_XFORM_GRAIN + (((unsigned)irand(rc)) & CHOOSE_XFORM_GRAIN_M1)];
else
fn = xform_distrib[ ((unsigned)irand(rc)) & CHOOSE_XFORM_GRAIN_M1 ];
if (apply_xform(cp, fn, p, q, rc)>0) {
consec ++;
badvals ++;
if (consec<5) {
p[0] = q[0];
p[1] = q[1];
p[2] = q[2];
p[3] = q[3];
i -= 4;
continue;
} else
consec = 0;
} else
consec = 0;
/* Store the last used transform */
lastxf = fn+1;
p[0] = q[0];
p[1] = q[1];
p[2] = q[2];
p[3] = q[3];
if (cp->final_xform_enable == 1) {
if (cp->xform[cp->final_xform_index].opacity==1 ||
flam3_random_isaac_01(rc)<cp->xform[cp->final_xform_index].opacity) {
apply_xform(cp, cp->final_xform_index, p, q, rc);
/* Keep the opacity from the original xform */
q[3] = p[3];
}
}
/* if fuse over, store it */
if (i >= 0) {
samples[i] = q[0];
samples[i+1] = q[1];
samples[i+2] = q[2];
samples[i+3] = q[3];
}
}
return(badvals);
}
int flam3_xform_preview(flam3_genome *cp, int xi, double range, int numvals, int depth, double *result, randctx *rc) {
/* We will evaluate the 'xi'th xform 'depth' times, over the following values: */
/* x in [-range : range], y in [-range : range], with 2* (2*numvals+1)^2 values returned */
double p[4];
double incr;
int outi;
int xx,yy,dd;
double oldweight;
outi=0;
oldweight = cp->xform[xi].density;
cp->xform[xi].density = 1.0;
/* Prepare the function pointers */
if (prepare_precalc_flags(cp)) {
cp->xform[xi].density = oldweight;
return(1);
}
/* Calculate increment */
incr = range / (double)numvals;
/* Perform precalculations */
xform_precalc(cp,xi);
/* Loop over the grid */
for (xx=-numvals;xx<=numvals;xx++) {
for (yy=-numvals;yy<=numvals;yy++) {
/* Calculate the input coordinates */
p[0] = (double)xx * incr;
p[1] = (double)yy * incr;
/* Loop over the depth */
for (dd=0;dd<depth;dd++)
apply_xform(cp, xi, p, p, rc);
result[outi] = p[0];
result[outi+1] = p[1];
outi += 2;
}
}
cp->xform[xi].density = oldweight;
return(0);
}
int flam3_colorhist(flam3_genome *cp, int num_batches, randctx *rc, double *hist) {
int lp,plp;
int mycolor;
unsigned short *xform_distrib;
int sbs = 10000;
double sub_batch[4*10000];
memset(hist,0,256*sizeof(double));
// get into the attractor
if (prepare_precalc_flags(cp))
return(1);
xform_distrib = flam3_create_xform_distrib(cp);
for (lp=0;lp<num_batches;lp++) {
sub_batch[0] = flam3_random_isaac_11(rc);
sub_batch[1] = flam3_random_isaac_11(rc);
sub_batch[2] = 0;
sub_batch[3] = 0;
if (xform_distrib==NULL)
return(1);
flam3_iterate(cp, sbs, 20, sub_batch, xform_distrib, rc);
// histogram the colors in the sub_batch array
for (plp=0;plp<4*sbs;plp+=4) {
mycolor = (int)(sub_batch[plp+2]*CMAP_SIZE);
if (mycolor<0) mycolor=0;
if (mycolor>CMAP_SIZE_M1) mycolor=CMAP_SIZE_M1;
hist[mycolor] += 1;
}
}
free(xform_distrib);
for (plp=0;plp<256;plp++)
hist[plp] /= (float)(num_batches*sbs);
return(0);
}
flam3_genome *sheep_loop(flam3_genome *cp, double blend) {
flam3_genome *result;
int i;
/* Allocate the genome - this must be freed by calling function */
result = calloc(1,sizeof(flam3_genome));
/* Clear it */
clear_cp(result,flam3_defaults_on);
/* Copy the original */
flam3_copy(result,cp);
/*
* Insert motion magic here :
* if there are motion elements, we will modify the contents of
* the result genome before flam3_rotate is called.
*/
for (i=0;i<cp->num_xforms;i++) {
if (cp->xform[i].num_motion>0) {
/* Apply motion parameters to result.xform[i] using blend parameter */
apply_motion_parameters(&cp->xform[i], &result->xform[i], blend);
}
/* Delete the motion parameters from the result */
flam3_delete_motion_elements(&result->xform[i]);
}
/* Rotate the affines */
flam3_rotate(result, blend*360.0,result->interpolation_type);
return(result);
}
flam3_genome *sheep_edge(flam3_genome *cp, double blend, int seqflag, double stagger) {
flam3_genome spun[2];
flam3_genome prealign[2];
flam3_genome *result;
int i,si;
char *ai;
memset(spun, 0, 2*sizeof(flam3_genome));
memset(prealign, 0, 2*sizeof(flam3_genome));
/* Allocate the memory for the result */
result = calloc(1,sizeof(flam3_genome));
/*
* Insert motion magic here :
* if there are motion elements, we will modify the contents of
* the prealign genomes before we rotate and interpolate.
*/
for (si=0;si<2;si++) {
flam3_copy(&prealign[si], &cp[si]);
for (i=0;i<cp[si].num_xforms;i++) {
if (cp[si].xform[i].num_motion>0) {
/* Apply motion parameters to result.xform[i] using blend parameter */
apply_motion_parameters(&cp[si].xform[i], &prealign[si].xform[i], blend);
}
}
}
/* Use the un-padded original for blend=0 when creating a sequence */
/* This keeps the original interpolation type intact */
if (seqflag && 0.0 == blend) {
flam3_copy(result, &prealign[0]);
} else {
/* Align what we're going to interpolate */
flam3_align(spun, prealign, 2);
spun[0].time = 0.0;
spun[1].time = 1.0;
/* Call this first to establish the asymmetric reference angles */
establish_asymmetric_refangles(spun,2);
/* Rotate the aligned xforms */
flam3_rotate(&spun[0], blend*360.0, spun[0].interpolation_type);
flam3_rotate(&spun[1], blend*360.0, spun[0].interpolation_type);
//fprintf(stderr, "xyzzy %d %d\n", spun[0].palette_interpolation, spun[1].palette_interpolation);
/* Now call the interpolation */
if (argi("unsmoother",0) == 0)
flam3_interpolate(spun, 2, smoother(blend), stagger, result);
else
flam3_interpolate(spun, 2, blend, stagger, result);
/* Interpolation type no longer needs to be forced to linear mode */
// if (!seqflag)
// result.interpolation_type = flam3_inttype_linear;
}
/* Clear the genomes we used */
clear_cp(&spun[0],flam3_defaults_on);
clear_cp(&spun[1],flam3_defaults_on);
clear_cp(&prealign[0],flam3_defaults_on);
clear_cp(&prealign[1],flam3_defaults_on);
/* Make sure there are no motion elements in the result */
for (i=0;i<result->num_xforms;i++)
flam3_delete_motion_elements(&result->xform[i]);
return(result);
}
/* BY is angle in degrees */
void flam3_rotate(flam3_genome *cp, double by, int interpolation_type) {
int i;
for (i = 0; i < cp->num_xforms; i++) {
double r[2][2];
double T[2][2];
double U[2][2];
double dtheta = by * 2.0 * M_PI / 360.0;
/* Don't rotate xforms with > 0 animate values */
if (cp->xform[i].animate == 0.0)
continue;
if (cp->xform[i].padding == 1) {
if (interpolation_type == flam3_inttype_compat) {
/* gen 202 era flam3 did not rotate padded xforms */
continue;
} else if (interpolation_type == flam3_inttype_older) {
/* not sure if 198 era flam3 rotated padded xforms */
continue;
} else if (interpolation_type == flam3_inttype_linear) {
/* don't rotate for prettier symsings */
continue;
} else if (interpolation_type == flam3_inttype_log) {
/* Current flam3: what do we prefer? */
//continue;
}
}
/* Do NOT rotate final xforms */
if (cp->final_xform_enable==1 && cp->final_xform_index==i)
continue;
r[1][1] = r[0][0] = cos(dtheta);
r[0][1] = sin(dtheta);
r[1][0] = -r[0][1];
T[0][0] = cp->xform[i].c[0][0];
T[1][0] = cp->xform[i].c[1][0];
T[0][1] = cp->xform[i].c[0][1];
T[1][1] = cp->xform[i].c[1][1];
mult_matrix(r, T, U);
cp->xform[i].c[0][0] = U[0][0];
cp->xform[i].c[1][0] = U[1][0];
cp->xform[i].c[0][1] = U[0][1];
cp->xform[i].c[1][1] = U[1][1];
}
}
#define APPMOT(x) do { addto->x += mot[i].x * motion_funcs(func,freq*blend); } while (0);
void apply_motion_parameters(flam3_xform *xf, flam3_xform *addto, double blend) {
int i,j,k;
int freq;
int func;
flam3_xform* mot;
mot = xf->motion;
/* Loop over the motion elements and add their contribution to the original vals */
for (i=0; i<xf->num_motion; i++) {
freq = mot[i].motion_freq;
func = mot[i].motion_func;
APPMOT(density); /* Must ensure > 0 after all is applied */
APPMOT(color); /* Must ensure [0,1] after all is applied */
APPMOT(opacity);
APPMOT(color_speed);
APPMOT(animate);
APPMOT(blob_low);
APPMOT(blob_high);
APPMOT(blob_waves);
APPMOT(pdj_a);
APPMOT(pdj_b);
APPMOT(pdj_c);
APPMOT(pdj_d);
APPMOT(fan2_x);
APPMOT(fan2_y);
APPMOT(rings2_val);
APPMOT(perspective_angle);
APPMOT(perspective_dist);
APPMOT(julian_power);
APPMOT(julian_dist);
APPMOT(juliascope_power);
APPMOT(juliascope_dist);
APPMOT(radial_blur_angle);
APPMOT(pie_slices);
APPMOT(pie_rotation);
APPMOT(pie_thickness);
APPMOT(ngon_sides);
APPMOT(ngon_power);
APPMOT(ngon_circle);
APPMOT(ngon_corners);
APPMOT(curl_c1);
APPMOT(curl_c2);
APPMOT(rectangles_x);
APPMOT(rectangles_y);
APPMOT(amw_amp);
APPMOT(disc2_rot);
APPMOT(disc2_twist);
APPMOT(super_shape_rnd);
APPMOT(super_shape_m);
APPMOT(super_shape_n1);
APPMOT(super_shape_n2);
APPMOT(super_shape_n3);
APPMOT(super_shape_holes);
APPMOT(flower_petals);
APPMOT(flower_holes);
APPMOT(conic_eccentricity);
APPMOT(conic_holes);
APPMOT(parabola_height);
APPMOT(parabola_width);
APPMOT(bent2_x);
APPMOT(bent2_y);
APPMOT(bipolar_shift);
APPMOT(cell_size);
APPMOT(cpow_r);
APPMOT(cpow_i);
APPMOT(cpow_power);
APPMOT(curve_xamp);
APPMOT(curve_yamp);
APPMOT(curve_xlength);
APPMOT(curve_ylength);
APPMOT(escher_beta);
APPMOT(lazysusan_x);
APPMOT(lazysusan_y);
APPMOT(lazysusan_twist);
APPMOT(lazysusan_space);
APPMOT(lazysusan_spin);
APPMOT(modulus_x);
APPMOT(modulus_y);
APPMOT(oscope_separation);
APPMOT(oscope_frequency);
APPMOT(oscope_amplitude);
APPMOT(oscope_damping);
APPMOT(popcorn2_x);
APPMOT(popcorn2_y);
APPMOT(popcorn2_c);
APPMOT(separation_x);
APPMOT(separation_xinside);
APPMOT(separation_y);
APPMOT(separation_yinside);
APPMOT(split_xsize);
APPMOT(split_ysize);
APPMOT(splits_x);
APPMOT(splits_y);
APPMOT(stripes_space);
APPMOT(stripes_warp);
APPMOT(wedge_angle);
APPMOT(wedge_hole);
APPMOT(wedge_count);
APPMOT(wedge_swirl);
APPMOT(wedge_julia_angle);
APPMOT(wedge_julia_count);
APPMOT(wedge_julia_power);
APPMOT(wedge_julia_dist);
APPMOT(wedge_sph_angle);
APPMOT(wedge_sph_hole);
APPMOT(wedge_sph_count);
APPMOT(wedge_sph_swirl);
APPMOT(whorl_inside);
APPMOT(whorl_outside);
APPMOT(waves2_scalex);
APPMOT(waves2_scaley);
APPMOT(waves2_freqx);
APPMOT(waves2_freqy);
APPMOT(auger_sym);
APPMOT(auger_weight);
APPMOT(auger_freq);
APPMOT(auger_scale);
APPMOT(flux_spread);
APPMOT(mobius_re_a);
APPMOT(mobius_re_b);
APPMOT(mobius_re_c);
APPMOT(mobius_re_d);
APPMOT(mobius_im_a);
APPMOT(mobius_im_b);
APPMOT(mobius_im_c);
APPMOT(mobius_im_d);
for (j = 0; j < flam3_nvariations; j++)
APPMOT(var[j]);
for (j=0; j<3; j++) {
for (k=0; k<2; k++) {
APPMOT(c[j][k]);
APPMOT(post[j][k]);
}
}
}
/* Make sure certain params are within reasonable bounds */
if (addto->color<0) addto->color=0;
if (addto->color>1) addto->color=1;
if (addto->density<0) addto->density=0;
}
/*
* create a control point that interpolates between the control points
* passed in CPS. CPS must be sorted by time.
*/
void flam3_interpolate(flam3_genome cps[], int ncps,
double time, double stagger, flam3_genome *result) {
int i1, i2;
double c[2];
flam3_genome cpi[4];
int smoothflag = 0;
if (1 == ncps) {
flam3_copy(result, &(cps[0]));
return;
}
if (cps[0].time >= time) {
i1 = 0;
i2 = 1;
} else if (cps[ncps - 1].time <= time) {
i1 = ncps - 2;
i2 = ncps - 1;
} else {
i1 = 0;
while (cps[i1].time < time)
i1++;
i1--;
i2 = i1 + 1;
}
c[0] = (cps[i2].time - time) / (cps[i2].time - cps[i1].time);
c[1] = 1.0 - c[0];
memset(cpi, 0, 4*sizeof(flam3_genome));
/* To interpolate the xforms, we will make copies of the source cps */
/* and ensure that they both have the same number before progressing */
if (flam3_interpolation_linear == cps[i1].interpolation) {
flam3_align(&cpi[0], &cps[i1], 2);
smoothflag = 0;
} else {
if (0 == i1) {
fprintf(stderr, "error: cannot use smooth interpolation on first segment.\n");
fprintf(stderr, "reverting to linear interpolation.\n");
flam3_align(&cpi[0], &cps[i1], 2);
smoothflag = 0;
}
if (ncps-1 == i2) {
fprintf(stderr, "error: cannot use smooth interpolation on last segment.\n");
fprintf(stderr, "reverting to linear interpolation.\n");
flam3_align(&cpi[0], &cps[i1], 2);
smoothflag = 0;
}
flam3_align(&cpi[0], &cps[i1-1], 4);
smoothflag = 1;
}
/* Clear the destination cp */
clear_cp(result, 1);
if (cpi[0].final_xform_index >= 0) {
flam3_add_xforms(result, cpi[0].num_xforms-1, 0, 0);
flam3_add_xforms(result, 1, 0, 1);
} else
flam3_add_xforms(result, cpi[0].num_xforms, 0, 0);
result->time = time;
result->interpolation = flam3_interpolation_linear;
result->interpolation_type = cpi[0].interpolation_type;
result->palette_interpolation = flam3_palette_interpolation_hsv_circular;
result->hsv_rgb_palette_blend = 0.0;
if (!smoothflag) {
flam3_interpolate_n(result, 2, cpi, c, stagger);
} else {
interpolate_catmull_rom(cpi, c[1], result);
clear_cp(&(cpi[2]),0);
clear_cp(&(cpi[3]),0);
}
clear_cp(&(cpi[0]),0);
clear_cp(&(cpi[1]),0);
}
void flam3_copy_params(flam3_xform *dest, flam3_xform *src, int varn) {
/* We only want to copy param var coefs for this one */
if (varn==VAR_BLOB) {
/* Blob */
dest->blob_low = src->blob_low;
dest->blob_high = src->blob_high;
dest->blob_waves = src->blob_waves;
} else if (varn==VAR_PDJ) {
/* PDJ */
dest->pdj_a = src->pdj_a;
dest->pdj_b = src->pdj_b;
dest->pdj_c = src->pdj_c;
dest->pdj_d = src->pdj_d;
} else if (varn==VAR_FAN2) {
/* Fan2 */
dest->fan2_x = src->fan2_x;
dest->fan2_y = src->fan2_y;
} else if (varn==VAR_RINGS2) {
/* Rings2 */
dest->rings2_val = src->rings2_val;
} else if (varn==VAR_PERSPECTIVE) {
/* Perspective */
dest->perspective_angle = src->perspective_angle;
dest->perspective_dist = src->perspective_dist;
dest->persp_vsin = src->persp_vsin;
dest->persp_vfcos = src->persp_vfcos;
} else if (varn==VAR_JULIAN) {
/* Julia_N */
dest->julian_power = src->julian_power;
dest->julian_dist = src->julian_dist;
dest->julian_rN = src->julian_rN;
dest->julian_cn = src->julian_cn;
} else if (varn==VAR_JULIASCOPE) {
/* Julia_Scope */
dest->juliascope_power = src->juliascope_power;
dest->juliascope_dist = src->juliascope_dist;
dest->juliascope_rN = src->juliascope_rN;
dest->juliascope_cn = src->juliascope_cn;
} else if (varn==VAR_RADIAL_BLUR) {
/* Radial Blur */
dest->radial_blur_angle = src->radial_blur_angle;
} else if (varn==VAR_PIE) {
/* Pie */
dest->pie_slices = src->pie_slices;
dest->pie_rotation = src->pie_rotation;
dest->pie_thickness = src->pie_thickness;
} else if (varn==VAR_NGON) {
/* Ngon */
dest->ngon_sides = src->ngon_sides;
dest->ngon_power = src->ngon_power;
dest->ngon_corners = src->ngon_corners;
dest->ngon_circle = src->ngon_circle;
} else if (varn==VAR_CURL) {
/* Curl */
dest->curl_c1 = src->curl_c1;
dest->curl_c2 = src->curl_c2;
} else if (varn==VAR_RECTANGLES) {
/* Rect */
dest->rectangles_x = src->rectangles_x;
dest->rectangles_y = src->rectangles_y;
} else if (varn==VAR_DISC2) {
/* Disc2 */
dest->disc2_rot = src->disc2_rot;
dest->disc2_twist = src->disc2_twist;
} else if (varn==VAR_SUPER_SHAPE) {
/* Supershape */
dest->super_shape_rnd = src->super_shape_rnd;
dest->super_shape_m = src->super_shape_m;
dest->super_shape_n1 = src->super_shape_n1;
dest->super_shape_n2 = src->super_shape_n2;
dest->super_shape_n3 = src->super_shape_n3;
dest->super_shape_holes = src->super_shape_holes;
} else if (varn==VAR_FLOWER) {
/* Flower */
dest->flower_petals = src->flower_petals;
dest->flower_petals = src->flower_petals;
} else if (varn==VAR_CONIC) {
/* Conic */
dest->conic_eccentricity = src->conic_eccentricity;
dest->conic_holes = src->conic_holes;
} else if (varn==VAR_PARABOLA) {
/* Parabola */
dest->parabola_height = src->parabola_height;
dest->parabola_width = src->parabola_width;
} else if (varn==VAR_BENT2) {
/* Bent2 */
dest->bent2_x = src->bent2_x;
dest->bent2_y = src->bent2_y;
} else if (varn==VAR_BIPOLAR) {
/* Bipolar */
dest->bipolar_shift = src->bipolar_shift;
} else if (varn==VAR_CELL) {
/* Cell */
dest->cell_size = src->cell_size;
} else if (varn==VAR_CPOW) {
/* Cpow */
dest->cpow_i = src->cpow_i;
dest->cpow_r = src->cpow_r;
dest->cpow_power = src->cpow_power;
} else if (varn==VAR_CURVE) {
/* Curve */
dest->curve_xamp = src->curve_xamp;
dest->curve_yamp = src->curve_yamp;
dest->curve_xlength = src->curve_xlength;
dest->curve_ylength = src->curve_ylength;
} else if (varn==VAR_ESCHER) {
/* Escher */
dest->escher_beta = src->escher_beta;
} else if (varn==VAR_LAZYSUSAN) {
/* Lazysusan */
dest->lazysusan_x = src->lazysusan_x;
dest->lazysusan_y = src->lazysusan_y;
dest->lazysusan_spin = src->lazysusan_spin;
dest->lazysusan_space = src->lazysusan_space;
dest->lazysusan_twist = src->lazysusan_twist;
} else if (varn==VAR_MODULUS) {
/* Modulus */
dest->modulus_x = src->modulus_x;
dest->modulus_y = src->modulus_y;
} else if (varn==VAR_OSCILLOSCOPE) {
/* Oscope */
dest->oscope_separation = src->oscope_separation;
dest->oscope_frequency = src->oscope_frequency;
dest->oscope_amplitude = src->oscope_amplitude;
dest->oscope_damping = src->oscope_damping;
} else if (varn==VAR_POPCORN2) {
/* Popcorn2 */
dest->popcorn2_x = src->popcorn2_x;
dest->popcorn2_y = src->popcorn2_y;
dest->popcorn2_c = src->popcorn2_c;
} else if (varn==VAR_SEPARATION) {
/* Separation */
dest->separation_x = src->separation_x;
dest->separation_y = src->separation_y;
dest->separation_xinside = src->separation_xinside;
dest->separation_yinside = src->separation_yinside;
} else if (varn==VAR_SPLIT) {
/* Split */
dest->split_xsize = src->split_xsize;
dest->split_ysize = src->split_ysize;
} else if (varn==VAR_SPLITS) {
/* Splits */
dest->splits_x = src->splits_x;
dest->splits_y = src->splits_y;
} else if (varn==VAR_STRIPES) {
/* Stripes */
dest->stripes_space = src->stripes_space;
dest->stripes_warp = src->stripes_warp;
} else if (varn==VAR_WEDGE) {
/* Wedge */
dest->wedge_angle = src->wedge_angle;
dest->wedge_hole = src->wedge_hole;
dest->wedge_count = src->wedge_count;
dest->wedge_swirl = src->wedge_swirl;
} else if (varn==VAR_WEDGE_JULIA) {
/* Wedge_Julia */
dest->wedge_julia_angle = src->wedge_julia_angle;
dest->wedge_julia_count = src->wedge_julia_count;
dest->wedge_julia_power = src->wedge_julia_power;
dest->wedge_julia_dist = src->wedge_julia_dist;
dest->wedgeJulia_cf = src->wedgeJulia_cf;
dest->wedgeJulia_cn = src->wedgeJulia_cn;
dest->wedgeJulia_rN = src->wedgeJulia_rN;
} else if (varn==VAR_WEDGE_SPH) {
/* Wedge_sph */
dest->wedge_sph_angle = src->wedge_sph_angle;
dest->wedge_sph_hole = src->wedge_sph_hole;
dest->wedge_sph_count = src->wedge_sph_count;
dest->wedge_sph_swirl = src->wedge_sph_swirl;
} else if (varn==VAR_WHORL) {
/* whorl */
dest->whorl_inside = src->whorl_inside;
dest->whorl_outside = src->whorl_outside;
} else if (varn==VAR_WAVES2) {
/* waves2 */
dest->waves2_scalex = src->waves2_scalex;
dest->waves2_scaley = src->waves2_scaley;
dest->waves2_freqx = src->waves2_freqx;
dest->waves2_freqy = src->waves2_freqy;
} else if (varn==VAR_AUGER) {
/* auger */
dest->auger_sym = src->auger_sym;
dest->auger_weight = src->auger_weight;
dest->auger_freq = src->auger_freq;
dest->auger_scale = src->auger_scale;
} else if (varn==VAR_FLUX) {
/* flux */
dest->flux_spread = src->flux_spread;
} else if (varn==VAR_MOBIUS) {
/* mobius */
dest->mobius_re_a = src->mobius_re_a;
dest->mobius_re_b = src->mobius_re_b;
dest->mobius_re_c = src->mobius_re_c;
dest->mobius_re_d = src->mobius_re_d;
dest->mobius_im_a = src->mobius_im_a;
dest->mobius_im_b = src->mobius_im_b;
dest->mobius_im_c = src->mobius_im_c;
dest->mobius_im_d = src->mobius_im_d;
}
}
/* Motion support functions */
void flam3_add_motion_element(flam3_xform *xf) {
/* Add one to the xform's count of motion elements */
xf->num_motion++;
/* Reallocate the motion storage to include the empty space */
xf->motion = (struct xform *)realloc(xf->motion, xf->num_motion * sizeof(struct xform));
/* Initialize the motion element */
/* In this case, all elements should be set to 0 */
memset( &(xf->motion[xf->num_motion-1]), 0, sizeof(struct xform));
}
/* Motion support functions */
void flam3_delete_motion_elements(flam3_xform *xf) {
/* Free the motion elements */
if (xf->num_motion>0) {
free(xf->motion);
xf->num_motion = 0;
}
}
/* Xform support functions */
void flam3_add_xforms(flam3_genome *thiscp, int num_to_add, int interp_padding, int final_flag) {
int i,j;
int old_num = thiscp->num_xforms;
int oldstd,numstd;
flam3_xform tmp;
oldstd = thiscp->num_xforms - (thiscp->final_xform_index >= 0);
/* !!! must make sure that if final_flag is specified, we don't already have a final xform! !!! */
// if (thiscp->num_xforms > 0)
thiscp->xform = (flam3_xform *)realloc(thiscp->xform, (thiscp->num_xforms + num_to_add) * sizeof(flam3_xform));
// else
// thiscp->xform = (flam3_xform *)malloc(num_to_add * sizeof(flam3_xform));
thiscp->num_xforms += num_to_add;
/* Initialize all the new xforms */
initialize_xforms(thiscp, old_num);
/* Set the padding flag for the new xforms */
if (interp_padding) {
for (i = old_num ; i < thiscp->num_xforms ; i++)
thiscp->xform[i].padding=1;
}
/* If the final xform is not the last xform in the list, make it so */
if (thiscp->final_xform_index >= 0 && thiscp->final_xform_index != thiscp->num_xforms-1) {
tmp = thiscp->xform[thiscp->final_xform_index];
for (i=thiscp->final_xform_index; i < thiscp->num_xforms-1; i++)
thiscp->xform[i] = thiscp->xform[i+1];
thiscp->final_xform_index = thiscp->num_xforms-1;
thiscp->xform[thiscp->final_xform_index] = tmp;
}
if (final_flag) {
/* Set the final xform index */
thiscp->final_xform_enable = 1;
thiscp->final_xform_index = thiscp->num_xforms-1;
} else {
/* Handle the chaos array */
numstd = thiscp->num_xforms - (thiscp->final_xform_index>=0);
/* Pad existing rows */
for (i=0;i<oldstd;i++) {
thiscp->chaos[i] = realloc(thiscp->chaos[i], numstd * sizeof(double));
for (j=oldstd; j<numstd; j++)
thiscp->chaos[i][j] = 1.0;
}
/* Add new rows */
thiscp->chaos = realloc(thiscp->chaos,numstd * sizeof(double *));
for (i=oldstd; i<numstd; i++) {
thiscp->chaos[i] = malloc(numstd * sizeof(double));
for (j=0;j<numstd;j++)
thiscp->chaos[i][j] = 1.0;
}
}
}
void flam3_delete_xform(flam3_genome *thiscp, int idx_to_delete) {
int i,j;
int num_std = thiscp->num_xforms - (thiscp->final_xform_index >= 0);
if (thiscp->final_xform_index != idx_to_delete) {
/* We're going to delete the nth std xform. */
/* Delete the nth_std row of the chaos array */
free(thiscp->chaos[idx_to_delete]);
/* Shift the pointers down one */
for (i=idx_to_delete+1;i<num_std;i++)
thiscp->chaos[i-1] = thiscp->chaos[i];
/* Realloc the pointer array */
thiscp->chaos = realloc(thiscp->chaos,(num_std-1)*sizeof(double *));
num_std--;
/* Loop over all of the rows and remove the nth_std element from them */
for (i=0;i<num_std;i++) {
for (j=idx_to_delete+1;j<num_std+1;j++) {
thiscp->chaos[i][j-1] = thiscp->chaos[i][j];
}
/* Realloc the vector to have one less element */
thiscp->chaos[i] = realloc(thiscp->chaos[i],num_std*sizeof(double));
}
}
/* Handle the final xform index */
if (thiscp->final_xform_index == idx_to_delete) {
thiscp->final_xform_index = -1;
thiscp->final_xform_enable = 0;
} else if (thiscp->final_xform_index > idx_to_delete) {
thiscp->final_xform_index--;
}
/* Delete the motion elements of the banished xform */
flam3_delete_motion_elements(&(thiscp->xform[idx_to_delete]));
/* Move all of the xforms down one - this does not require manual motion xform adjustment */
for (i=idx_to_delete; i<thiscp->num_xforms-1; i++)
thiscp->xform[i] = thiscp->xform[i+1];
thiscp->num_xforms--;
/* Reduce the memory storage by one xform */
thiscp->xform = (flam3_xform *)realloc(thiscp->xform, sizeof(flam3_xform) * thiscp->num_xforms);
}
void flam3_copy_xform(flam3_xform *dest, flam3_xform *src) {
int j;
/* Make sure the dest doesn't have motion already */
if (dest->num_motion>0)
flam3_delete_motion_elements(dest);
/* Copy everything */
*dest = *src;
/* Reset motion in dest and copy it */
dest->num_motion=0;
dest->motion=NULL;
if (src->num_motion>0) {
for (j=0;j<src->num_motion;j++)
flam3_add_motion_element(dest);
memcpy(dest->motion,src->motion,src->num_motion*sizeof(flam3_xform));
}
}
/* Copy one control point to another */
void flam3_copy(flam3_genome *dest, flam3_genome *src) {
int i,ii;
int numstd;
/* If there are any xforms in dest before the copy, clean them up */
clear_cp(dest, 1);
/* Copy main contents of genome */
memcpy(dest, src, sizeof(flam3_genome));
/* Only the pointer to the xform was copied, not the actual xforms. */
/* We need to create new xform memory storage for this new cp */
/* This goes for chaos, too. */
dest->num_xforms = 0;
dest->final_xform_index = -1;
dest->xform = NULL;
dest->chaos = NULL;
/* Add the standard xforms first */
numstd = src->num_xforms-(src->final_xform_index>=0);
flam3_add_xforms(dest, numstd, 0, 0);
for (i=0;i<numstd;i++)
flam3_copy_xform(&dest->xform[i], &src->xform[i]);
/* Add the final x if it's present */
if (src->final_xform_index>=0) {
i = src->final_xform_index;
flam3_add_xforms(dest, 1, 0, 1);
ii = dest->final_xform_index;
flam3_copy_xform(&dest->xform[ii],&src->xform[i]);
}
/* Also, only the pointer to the chaos array was copied.
* We have to take care of that as well. */
for (i=0;i<numstd;i++)
memcpy(dest->chaos[i],src->chaos[i], numstd * sizeof(double));
}
void flam3_copyx(flam3_genome *dest, flam3_genome *src, int dest_std_xforms, int dest_final_xform) {
int i,numsrcstd;
/* If there are any xforms in dest before the copy, clean them up */
clear_cp(dest, 1);
/* Copy main contents of genome */
memcpy(dest, src, sizeof(flam3_genome));
/* Only the pointer to the xform was copied, not the actual xforms. */
/* We need to create new xform memory storage for this new cp */
/* This goes for chaos, too. */
dest->num_xforms = 0;
dest->xform = NULL;
dest->chaos = NULL;
dest->final_xform_index = -1;
/* Add the padded standard xform list */
/* Set the pad to 1 for these */
flam3_add_xforms(dest, dest_std_xforms, 1, 0);
numsrcstd = src->num_xforms - (src->final_xform_index >= 0);
for(i=0;i<numsrcstd;i++) {
/* When we copy the old xform, the pad is set to 0 */
flam3_copy_xform(&dest->xform[i],&src->xform[i]);
/* Copy the initial chaos from the src - the rest are already 1 */
memcpy(dest->chaos[i], src->chaos[i], numsrcstd*sizeof(double));
}
/* Add the final xform if necessary */
if (dest_final_xform > 0) {
flam3_add_xforms(dest, dest_final_xform, 1, 1);
if (src->final_xform_enable > 0) {
i = src->final_xform_index;
flam3_copy_xform(&dest->xform[dest->num_xforms-1],&src->xform[i]);
} else {
/* Interpolated-against final xforms need animate & color_speed set to 0.0 */
dest->xform[dest->num_xforms-1].num_motion = 0;
dest->xform[dest->num_xforms-1].motion=NULL;
dest->xform[dest->num_xforms-1].animate=0.0;
dest->xform[dest->num_xforms-1].color_speed=0.0;
}
} else {
dest->final_xform_index = -1;
dest->final_xform_enable = 0;
}
}
void clear_cp(flam3_genome *cp, int default_flag) {
cp->palette_index = flam3_palette_random;
cp->center[0] = 0.0;
cp->center[1] = 0.0;
cp->rot_center[0] = 0.0;
cp->rot_center[1] = 0.0;
cp->gamma = 4.0;
cp->vibrancy = 1.0;
cp->contrast = 1.0;
cp->brightness = 4.0;
cp->symmetry = 0;
cp->hue_rotation = 0.0;
cp->rotate = 0.0;
cp->pixels_per_unit = 50;
cp->interpolation = flam3_interpolation_linear;
cp->palette_interpolation = flam3_palette_interpolation_hsv_circular;
cp->hsv_rgb_palette_blend = 0.0;
cp->genome_index = 0;
memset(cp->parent_fname,0,flam3_parent_fn_len);
if (default_flag==flam3_defaults_on) {
/* If defaults are on, set to reasonable values */
cp->highlight_power = -1.0;
cp->background[0] = 0.0;
cp->background[1] = 0.0;
cp->background[2] = 0.0;
cp->width = 100;
cp->height = 100;
cp->spatial_oversample = 1;
cp->spatial_filter_radius = 0.5;
cp->zoom = 0.0;
cp->sample_density = 1;
/* Density estimation stuff defaulting to ON */
cp->estimator = 9.0;
cp->estimator_minimum = 0.0;
cp->estimator_curve = 0.4;
cp->gam_lin_thresh = 0.01;
// cp->motion_exp = 0.0;
cp->nbatches = 1;
cp->ntemporal_samples = 1000;
cp->spatial_filter_select = flam3_gaussian_kernel;
cp->interpolation_type = flam3_inttype_log;
cp->temporal_filter_type = flam3_temporal_box;
cp->temporal_filter_width = 1.0;
cp->temporal_filter_exp = 0.0;
cp->palette_mode = flam3_palette_mode_step;
} else {
/* Defaults are off, so set to UN-reasonable values. */
cp->highlight_power = -1.0;
cp->background[0] = -1.0;
cp->background[1] = -1.0;
cp->background[2] = -1.0;
cp->zoom = 999999999;
cp->spatial_oversample = -1;
cp->spatial_filter_radius = -1;
cp->nbatches = -1;
cp->ntemporal_samples = -1;
cp->width = -1;
cp->height = -1;
cp->sample_density = -1;
cp->estimator = -1;
cp->estimator_minimum = -1;
cp->estimator_curve = -1;
cp->gam_lin_thresh = -1;
// cp->motion_exp = -999;
cp->nbatches = 0;
cp->ntemporal_samples = 0;
cp->spatial_filter_select = -1;
cp->interpolation_type = -1;
cp->temporal_filter_type = -1;
cp->temporal_filter_width = -1;
cp->temporal_filter_exp = -999;
cp->palette_mode = -1;
}
if (cp->xform != NULL && cp->num_xforms > 0) {
int i;
int ns = cp->num_xforms - (cp->final_xform_index>=0);
for (i=0;i<ns;i++) {
free(cp->chaos[i]);
}
free(cp->chaos);
cp->chaos=NULL;
for (i=0;i<cp->num_xforms;i++)
flam3_delete_motion_elements(&cp->xform[i]);
free(cp->xform);
cp->xform=NULL;
cp->num_xforms = 0;
}
cp->final_xform_enable = 0;
cp->final_xform_index = -1;
}
int flam3_count_nthreads(void) {
int nthreads;
#ifndef HAVE_LIBPTHREAD
return(1);
#endif
#ifdef _WIN32
SYSTEM_INFO sysInfo;
GetSystemInfo(&sysInfo);
nthreads = sysInfo.dwNumberOfProcessors;
#else
#ifdef __APPLE__
kern_return_t kr;
host_name_port_t host;
unsigned int size;
struct host_basic_info hi;
host = mach_host_self();
size = sizeof(hi)/sizeof(int);
kr = host_info(host, HOST_BASIC_INFO, (host_info_t)&hi, &size);
if (kr != KERN_SUCCESS) {
mach_error("host_info():", kr);
/* set threads to 1 on error */
nthreads = 1;
} else
nthreads = hi.avail_cpus;
#else
#ifndef _SC_NPROCESSORS_ONLN
char line[MAXBUF];
FILE *f = fopen("/proc/cpuinfo", "r");
if (NULL == f) goto def;
nthreads = 0;
while (fgets(line, MAXBUF, f)) {
if (!strncmp("processor\t:", line, 11))
nthreads++;
}
fclose(f);
if (nthreads < 1) goto def;
return (nthreads);
def:
fprintf(stderr, "could not read /proc/cpuinfo, using one render thread.\n");
nthreads = 1;
#else
nthreads = sysconf(_SC_NPROCESSORS_ONLN);
if (nthreads < 1) nthreads = 1;
#endif
#endif
#endif
return (nthreads);
}
flam3_genome *flam3_parse_xml2(char *xmldata, char *xmlfilename, int default_flag, int *ncps) {
xmlDocPtr doc; /* Parsed XML document tree */
xmlNode *rootnode;
char *bn;
int i;
int loc_all_ncps=0;
flam3_genome *loc_all_cp=NULL;
char* locale = NULL;
char* lorig = setlocale(LC_NUMERIC, NULL);
/* Parse XML string into internal document */
/* Forbid network access during read */
doc = xmlReadMemory(xmldata, (int)strlen(xmldata), xmlfilename, NULL, XML_PARSE_NONET);
/* Check for errors */
if (doc==NULL) {
fprintf(stderr, "Failed to parse %s\n", xmlfilename);
return NULL;
}
/* What is the root node of the document? */
rootnode = xmlDocGetRootElement(doc);
// force use of "C" locale when writing reals.
// first save away the current settings.
if (lorig == NULL)
fprintf(stderr, "error: couldn't get current locale\n");
else {
int slen = strlen(lorig) + 1;
locale = (char*)malloc(slen);
if (locale != NULL)
memcpy(locale, lorig, slen);
}
if (setlocale(LC_NUMERIC, "C") == NULL)
fprintf(stderr, "error: couldn't set C locale\n");
/* Scan for <flame> nodes, starting with this node */
bn = basename(xmlfilename);
/* Have to use &loc_all_cp since the memory gets allocated in scan_for_flame_nodes */
scan_for_flame_nodes(rootnode, bn, default_flag,&loc_all_cp,&loc_all_ncps);
// restore locale
if (locale != NULL) {
if (setlocale(LC_NUMERIC, locale) == NULL)
fprintf(stderr, "error: couldn't replace locale settings\n");
free(locale);
}
xmlFreeDoc(doc);
*ncps = loc_all_ncps;
/* Check to see if the first control point or the second-to-last */
/* control point has interpolation="smooth". This is invalid */
/* and should be reset to linear (with a warning). */
if (loc_all_ncps>=1) {
if (loc_all_cp[0].interpolation == flam3_interpolation_smooth) {
fprintf(stderr,"Warning: smooth interpolation cannot be used for first segment.\n"
" switching to linear.\n");
loc_all_cp[0].interpolation = flam3_interpolation_linear;
}
}
if (loc_all_ncps>=2) {
if (loc_all_cp[(loc_all_ncps)-2].interpolation == flam3_interpolation_smooth) {
fprintf(stderr,"Warning: smooth interpolation cannot be used for last segment.\n"
" switching to linear.\n");
loc_all_cp[loc_all_ncps-2].interpolation = flam3_interpolation_linear;
}
}
/* Finally, ensure that consecutive 'rotate' parameters never exceed */
/* a difference of more than 180 degrees (+/-) for interpolation. */
/* An adjustment of +/- 360 degrees is made until this is true. */
if (*ncps>1) {
for (i=1;i<*ncps;i++) {
/* Only do this adjustment if we're not in compat mode */
if (flam3_inttype_compat != loc_all_cp[i-1].interpolation_type
&& flam3_inttype_older != loc_all_cp[i-1].interpolation_type) {
while (loc_all_cp[i].rotate < loc_all_cp[i-1].rotate-180)
loc_all_cp[i].rotate += 360;
while (loc_all_cp[i].rotate > loc_all_cp[i-1].rotate+180)
loc_all_cp[i].rotate -= 360;
}
}
}
//Note that concurrent calls to flam3, if in parallel, potentially segfault
//if this function is called. technically it's required but it doesn't
//leak memory continuously.
//xmlCleanupParser();
return loc_all_cp;
}
flam3_genome * flam3_parse_from_file(FILE *f, char *fname, int default_flag, int *ncps) {
int i, c, slen = 5000;
char *s, *snew;
flam3_genome *ret;
/* Incrementally read XML file into a string */
s = malloc(slen);
i = 0;
do {
c = getc(f);
if (EOF == c)
break;
s[i++] = c;
if (i == slen-1) {
slen *= 2;
snew = realloc(s, slen);
if (snew==NULL) {
fprintf(stderr,"XML file too large to be read. continuing with partial file.\n");
break;
} else
s = snew;
}
} while (1);
/* Null-terminate the read XML data */
s[i] = 0;
/* Parse the XML string */
if (fname)
ret = flam3_parse_xml2(s, fname, default_flag, ncps);
else
ret = flam3_parse_xml2(s, "stdin", default_flag, ncps);
free(s);
return(ret);
}
void flam3_apply_template(flam3_genome *cp, flam3_genome *templ) {
/* Check for invalid values - only replace those with valid ones */
if (templ->background[0] >= 0)
cp->background[0] = templ->background[0];
if (templ->background[1] >= 0)
cp->background[1] = templ->background[1];
if (templ->background[1] >= 0)
cp->background[2] = templ->background[2];
if (templ->zoom < 999999998)
cp->zoom = templ->zoom;
if (templ->spatial_oversample > 0)
cp->spatial_oversample = templ->spatial_oversample;
if (templ->spatial_filter_radius >= 0)
cp->spatial_filter_radius = templ->spatial_filter_radius;
if (templ->sample_density > 0)
cp->sample_density = templ->sample_density;
if (templ->nbatches > 0)
cp->nbatches = templ->nbatches;
if (templ->ntemporal_samples > 0)
cp->ntemporal_samples = templ->ntemporal_samples;
if (templ->width > 0) {
/* preserving scale should be an option */
// cp->pixels_per_unit = cp->pixels_per_unit * templ->width / cp->width;
cp->pixels_per_unit = cp->pixels_per_unit * templ->height / cp->height;
cp->width = templ->width;
}
if (templ->height > 0)
cp->height = templ->height;
if (templ->estimator >= 0)
cp->estimator = templ->estimator;
if (templ->estimator_minimum >= 0)
cp->estimator_minimum = templ->estimator_minimum;
if (templ->estimator_curve >= 0)
cp->estimator_curve = templ->estimator_curve;
if (templ->gam_lin_thresh >= 0)
cp->gam_lin_thresh = templ->gam_lin_thresh;
if (templ->nbatches>0)
cp->nbatches = templ->nbatches;
if (templ->ntemporal_samples>0)
cp->ntemporal_samples = templ->ntemporal_samples;
if (templ->spatial_filter_select>0)
cp->spatial_filter_select = templ->spatial_filter_select;
if (templ->interpolation >= 0)
cp->interpolation = templ->interpolation;
if (templ->interpolation_type >= 0)
cp->interpolation_type = templ->interpolation_type;
if (templ->temporal_filter_type >= 0)
cp->temporal_filter_type = templ->temporal_filter_type;
if (templ->temporal_filter_width > 0)
cp->temporal_filter_width = templ->temporal_filter_width;
if (templ->temporal_filter_exp > -900)
cp->temporal_filter_exp = templ->temporal_filter_exp;
if (templ->highlight_power >=0)
cp->highlight_power = templ->highlight_power;
if (templ->palette_mode >= 0)
cp->palette_mode = templ->palette_mode;
if (templ->palette_interpolation >= 0)
cp->palette_interpolation = templ->palette_interpolation;
if (templ->hsv_rgb_palette_blend >= 0)
cp->hsv_rgb_palette_blend = templ->hsv_rgb_palette_blend;
}
char *flam3_print_to_string(flam3_genome *cp) {
FILE *tmpflame;
long stringbytes;
char *genome_string;
int using_tmpdir = 0;
char tmpnam[256];
tmpflame = tmpfile();
if (NULL==tmpflame) {
#ifdef _WIN32
// This might be a permissions problem, so let's try to open a
// tempfile in the env var TEMP's area instead
char* tmp_path = getenv("TEMP");
if (tmp_path != NULL) {
strcpy(tmpnam, tmp_path);
strcat(tmpnam, "\\fr0st.tmp");
tmpflame = fopen(tmpnam, "w+");
if (tmpflame != NULL) {
using_tmpdir = 1;
}
}
#endif
if (using_tmpdir == 0) {
perror("FLAM3: opening temporary file");
return (NULL);
}
}
flam3_print(tmpflame,cp,NULL,flam3_dont_print_edits);
stringbytes = ftell(tmpflame);
fseek(tmpflame,0L, SEEK_SET);
genome_string = (char *)calloc(stringbytes+1,1);
if (stringbytes != fread(genome_string, 1, stringbytes, tmpflame)) {
perror("FLAM3: reading string from temp file");
}
fclose(tmpflame);
if (using_tmpdir)
unlink(tmpnam);
return(genome_string);
}
void flam3_print(FILE *f, flam3_genome *cp, char *extra_attributes, int print_edits) {
int i,numstd;
int flam27_flag;
char *ai;
// force use of "C" locale when writing reals.
// first save away the current settings.
char* locale = NULL;
char* lorig = setlocale(LC_NUMERIC, NULL);
if (lorig == NULL)
fprintf(stderr, "error: couldn't get current locale\n");
else {
int slen = strlen(lorig) + 1;
locale = (char*)malloc(slen);
if (locale != NULL)
memcpy(locale, lorig, slen);
}
if (setlocale(LC_NUMERIC, "C") == NULL)
fprintf(stderr, "error: couldn't set C locale\n");
flam27_flag = argi("flam27",0);
fprintf(f, "<flame version=\"FLAM3-%s\" time=\"%g\"", flam3_version(),cp->time);
if (cp->flame_name[0]!=0)
fprintf(f, " name=\"%s\"",cp->flame_name);
fprintf(f, " size=\"%d %d\"", cp->width, cp->height);
fprintf(f, " center=\"%g %g\"", cp->center[0], cp->center[1]);
fprintf(f, " scale=\"%g\"", cp->pixels_per_unit);
if (cp->zoom != 0.0)
fprintf(f, " zoom=\"%g\"", cp->zoom);
fprintf(f, " rotate=\"%g\"", cp->rotate);
fprintf(f, " supersample=\"%d\"", cp->spatial_oversample);
fprintf(f, " filter=\"%g\"", cp->spatial_filter_radius);
/* Need to print the correct kernel to use */
if (cp->spatial_filter_select == flam3_gaussian_kernel)
fprintf(f, " filter_shape=\"gaussian\"");
else if (cp->spatial_filter_select == flam3_hermite_kernel)
fprintf(f, " filter_shape=\"hermite\"");
else if (cp->spatial_filter_select == flam3_box_kernel)
fprintf(f, " filter_shape=\"box\"");
else if (cp->spatial_filter_select == flam3_triangle_kernel)
fprintf(f, " filter_shape=\"triangle\"");
else if (cp->spatial_filter_select == flam3_bell_kernel)
fprintf(f, " filter_shape=\"bell\"");
else if (cp->spatial_filter_select == flam3_b_spline_kernel)
fprintf(f, " filter_shape=\"bspline\"");
else if (cp->spatial_filter_select == flam3_mitchell_kernel)
fprintf(f, " filter_shape=\"mitchell\"");
else if (cp->spatial_filter_select == flam3_blackman_kernel)
fprintf(f, " filter_shape=\"blackman\"");
else if (cp->spatial_filter_select == flam3_catrom_kernel)
fprintf(f, " filter_shape=\"catrom\"");
else if (cp->spatial_filter_select == flam3_hanning_kernel)
fprintf(f, " filter_shape=\"hanning\"");
else if (cp->spatial_filter_select == flam3_hamming_kernel)
fprintf(f, " filter_shape=\"hamming\"");
else if (cp->spatial_filter_select == flam3_lanczos3_kernel)
fprintf(f, " filter_shape=\"lanczos3\"");
else if (cp->spatial_filter_select == flam3_lanczos2_kernel)
fprintf(f, " filter_shape=\"lanczos2\"");
else if (cp->spatial_filter_select == flam3_quadratic_kernel)
fprintf(f, " filter_shape=\"quadratic\"");
if (cp->temporal_filter_type == flam3_temporal_box)
fprintf(f, " temporal_filter_type=\"box\"");
else if (cp->temporal_filter_type == flam3_temporal_gaussian)
fprintf(f, " temporal_filter_type=\"gaussian\"");
else if (cp->temporal_filter_type == flam3_temporal_exp)
fprintf(f, " temporal_filter_type=\"exp\" temporal_filter_exp=\"%g\"",cp->temporal_filter_exp);
fprintf(f, " temporal_filter_width=\"%g\"",cp->temporal_filter_width);
fprintf(f, " quality=\"%g\"", cp->sample_density);
fprintf(f, " passes=\"%d\"", cp->nbatches);
fprintf(f, " temporal_samples=\"%d\"", cp->ntemporal_samples);
fprintf(f, " background=\"%g %g %g\"",
cp->background[0], cp->background[1], cp->background[2]);
fprintf(f, " brightness=\"%g\"", cp->brightness);
fprintf(f, " gamma=\"%g\"", cp->gamma);
if (!flam27_flag)
fprintf(f, " highlight_power=\"%g\"", cp->highlight_power);
fprintf(f, " vibrancy=\"%g\"", cp->vibrancy);
fprintf(f, " estimator_radius=\"%g\" estimator_minimum=\"%g\" estimator_curve=\"%g\"",
cp->estimator, cp->estimator_minimum, cp->estimator_curve);
fprintf(f, " gamma_threshold=\"%g\"", cp->gam_lin_thresh);
if (flam3_palette_mode_step == cp->palette_mode)
fprintf(f, " palette_mode=\"step\"");
else if (flam3_palette_mode_linear == cp->palette_mode)
fprintf(f, " palette_mode=\"linear\"");
if (flam3_interpolation_linear != cp->interpolation)
fprintf(f, " interpolation=\"smooth\"");
if (flam3_inttype_linear == cp->interpolation_type)
fprintf(f, " interpolation_type=\"linear\"");
else if (flam3_inttype_log == cp->interpolation_type)
fprintf(f, " interpolation_type=\"log\"");
else if (flam3_inttype_compat == cp->interpolation_type)
fprintf(f, " interpolation_type=\"old\"");
else if (flam3_inttype_older == cp->interpolation_type)
fprintf(f, " interpolation_type=\"older\"");
if (flam3_palette_interpolation_sweep == cp->palette_interpolation)
fprintf(f, " palette_interpolation=\"sweep\"");
else if (flam3_palette_interpolation_rgb == cp->palette_interpolation)
fprintf(f, " palette_interpolation=\"rgb\"");
else if (flam3_palette_interpolation_hsv == cp->palette_interpolation)
fprintf(f, " palette_interpolation=\"hsv\"");
else if (flam3_palette_interpolation_hsv_circular == cp->palette_interpolation) {
fprintf(f, " palette_interpolation=\"hsv_circular\"");
if (cp->hsv_rgb_palette_blend > 0.0)
fprintf(f, " hsv_rgb_palette_blend=\"%g\"", cp->hsv_rgb_palette_blend);
}
if (extra_attributes)
fprintf(f, " %s", extra_attributes);
fprintf(f, ">\n");
if (cp->symmetry)
fprintf(f, " <symmetry kind=\"%d\"/>\n", cp->symmetry);
numstd = cp->num_xforms - (cp->final_xform_index>=0);
for (i = 0; i < cp->num_xforms; i++) {
if (i==cp->final_xform_index)
flam3_print_xform(f, &cp->xform[i], 1, numstd, NULL, 0);
else
flam3_print_xform(f, &cp->xform[i], 0, numstd, cp->chaos[i], 0);
}
int hexpalette = argi("hexpalette",0);
if (hexpalette) {
fprintf(f," <palette count=\"256\" format=\"RGB\">");
for (i=0; i < 256; i++) {
int r, g, b;
r = rint(cp->palette[i].color[0] * 255.0);
g = rint(cp->palette[i].color[1] * 255.0);
b = rint(cp->palette[i].color[2] * 255.0);
if (i % 8 == 0) {
fprintf(f,"\n");
fprintf(f," ");
}
fprintf(f,"%2x%2x%2x",r,g,b);
}
fprintf(f,"\n");
fprintf(f," </palette>\n");
} else {
for (i = 0; i < 256; i++) {
double r, g, b, a;
r = (cp->palette[i].color[0] * 255.0);
g = (cp->palette[i].color[1] * 255.0);
b = (cp->palette[i].color[2] * 255.0);
a = (cp->palette[i].color[3] * 255.0);
fprintf(f, " ");
if (flam27_flag || a==255.0) {
if (flam27_flag && a!=255.0)
fprintf(stderr,"alpha channel in palette cannot be stored in 2.7 compatibility mode; truncating\n");
if (getenv("intpalette"))
fprintf(f, "<color index=\"%d\" rgb=\"%d %d %d\"/>", i, (int)rint(r), (int)rint(g), (int)rint(b));
else {
#ifdef USE_FLOAT_INDICES
fprintf(f, "<color index=\"%.10g\" rgb=\"%.6g %.6g %.6g\"/>", cp->palette[i].index, r, g, b);
#else
fprintf(f, "<color index=\"%d\" rgb=\"%.6g %.6g %.6g\"/>", i, r, g, b);
#endif
}
} else {
if (getenv("intpalette"))
fprintf(f, " <color index=\"%d\" rgba=\"%d %d %d %d\"/>", i, (int)rint(r), (int)rint(g), (int)rint(b), (int)rint(a));
else
fprintf(f, " <color index=\"%d\" rgba=\"%.6g %.6g %.6g %.6g\"/>", i, r, g, b, a);
}
// if (i%4 == 3)
fprintf(f, "\n");
}
}
if (cp->edits != NULL && print_edits==flam3_print_edits) {
/* We need a custom script for printing these */
/* and it needs to be recursive */
xmlNodePtr elem_node = xmlDocGetRootElement(cp->edits);
flam3_edit_print(f,elem_node, 1, 1);
}
fprintf(f, "</flame>\n");
if (locale != NULL) {
if (setlocale(LC_NUMERIC, locale) == NULL)
fprintf(stderr, "error: couldn't restore locale settings\n");
free(locale);
}
}
#define PRINTNON(p) do { if (x->p != 0.0) fprintf(f, #p "=\"%f\" ",x->p); } while(0)
void flam3_print_xform(FILE *f, flam3_xform *x, int final_flag, int numstd, double *chaos_row, int motion_flag) {
int blob_var=0,pdj_var=0,fan2_var=0,rings2_var=0,perspective_var=0;
int juliaN_var=0,juliaScope_var=0,radialBlur_var=0,pie_var=0,disc2_var=0;
int ngon_var=0,curl_var=0,rectangles_var=0,supershape_var=0;
int flower_var=0,conic_var=0,parabola_var=0,bent2_var=0,bipolar_var=0;
int cell_var=0,cpow_var=0,curve_var=0,escher_var=0,lazys_var=0;
int modulus_var=0,oscope_var=0,popcorn2_var=0,separation_var=0;
int split_var=0,splits_var=0,stripes_var=0,wedge_var=0,wedgeJ_var=0;
int wedgeS_var=0,whorl_var=0,waves2_var=0,auger_var=0,flux_var=0;
int mobius_var=0;
int j;
int lnv;
int flam27_flag;
char *ai;
flam27_flag = argi("flam27",0);
/* Motion flag will not be set if flam27_flag is set */
if (motion_flag) {
fprintf(f, " <motion motion_frequency=\"%d\" ",x->motion_freq);
if (x->motion_func == MOTION_SIN)
fprintf(f, "motion_function=\"sin\" ");
else if (x->motion_func == MOTION_TRIANGLE)
fprintf(f, "motion_function=\"triangle\" ");
else if (x->motion_func == MOTION_HILL)
fprintf(f, "motion_function=\"hill\" ");
} else {
if (final_flag)
fprintf(f, " <finalxform ");
else
fprintf(f, " <xform weight=\"%g\" ", x->density);
}
if (!motion_flag || x->color != 0.0)
fprintf(f, "color=\"%g\" ", x->color);
if (flam27_flag)
fprintf(f, "symmetry=\"%g\" ", 1.0-2.0*x->color_speed);
else if (!motion_flag || x->color_speed != 0.0)
fprintf(f, "color_speed=\"%g\" ", x->color_speed);
if (!final_flag && !motion_flag && !flam27_flag)
fprintf(f, "animate=\"%g\" ", x->animate);
lnv = flam27_flag ? 54:flam3_nvariations;
for (j = 0; j < lnv; j++) {
double v = x->var[j];
if (j == VAR_TWINTRIAN) continue;
if (0.0 != v) {
fprintf(f, "%s=\"%g\" ", flam3_variation_names[j], v);
if (j==VAR_BLOB)
blob_var=1;
else if (j==VAR_PDJ)
pdj_var=1;
else if (j==VAR_FAN2)
fan2_var=1;
else if (j==VAR_RINGS2)
rings2_var=1;
else if (j==VAR_PERSPECTIVE)
perspective_var=1;
else if (j==VAR_JULIAN)
juliaN_var=1;
else if (j==VAR_JULIASCOPE)
juliaScope_var=1;
else if (j==VAR_RADIAL_BLUR)
radialBlur_var=1;
else if (j==VAR_PIE)
pie_var=1;
else if (j==VAR_NGON)
ngon_var=1;
else if (j==VAR_CURL)
curl_var=1;
else if (j==VAR_RECTANGLES)
rectangles_var=1;
else if (j==VAR_DISC2)
disc2_var=1;
else if (j==VAR_SUPER_SHAPE)
supershape_var=1;
else if (j==VAR_FLOWER)
flower_var=1;
else if (j==VAR_CONIC)
conic_var=1;
else if (j==VAR_PARABOLA)
parabola_var=1;
else if (j==VAR_BENT2)
bent2_var=1;
else if (j==VAR_BIPOLAR)
bipolar_var=1;
else if (j==VAR_CELL)
cell_var=1;
else if (j==VAR_CPOW)
cpow_var=1;
else if (j==VAR_CURVE)
curve_var=1;
else if (j==VAR_ESCHER)
escher_var=1;
else if (j==VAR_LAZYSUSAN)
lazys_var=1;
else if (j==VAR_MODULUS)
modulus_var=1;
else if (j==VAR_OSCILLOSCOPE)
oscope_var=1;
else if (j==VAR_POPCORN2)
popcorn2_var=1;
else if (j==VAR_SPLIT)
split_var=1;
else if (j==VAR_SPLITS)
splits_var=1;
else if (j==VAR_STRIPES)
stripes_var=1;
else if (j==VAR_WEDGE)
wedge_var=1;
else if (j==VAR_WEDGE_JULIA)
wedgeJ_var=1;
else if (j==VAR_WEDGE_SPH)
wedgeS_var=1;
else if (j==VAR_WHORL)
whorl_var=1;
else if (j==VAR_WAVES2)
waves2_var=1;
else if (j==VAR_AUGER)
auger_var=1;
else if (j==VAR_FLUX)
flux_var=1;
else if (j==VAR_MOBIUS)
mobius_var=1;
}
}
if (!motion_flag) {
if (blob_var==1) {
fprintf(f, "blob_low=\"%g\" ", x->blob_low);
fprintf(f, "blob_high=\"%g\" ", x->blob_high);
fprintf(f, "blob_waves=\"%g\" ", x->blob_waves);
}
if (pdj_var==1) {
fprintf(f, "pdj_a=\"%g\" ", x->pdj_a);
fprintf(f, "pdj_b=\"%g\" ", x->pdj_b);
fprintf(f, "pdj_c=\"%g\" ", x->pdj_c);
fprintf(f, "pdj_d=\"%g\" ", x->pdj_d);
}
if (fan2_var==1) {
fprintf(f, "fan2_x=\"%g\" ", x->fan2_x);
fprintf(f, "fan2_y=\"%g\" ", x->fan2_y);
}
if (rings2_var==1) {
fprintf(f, "rings2_val=\"%g\" ", x->rings2_val);
}
if (perspective_var==1) {
fprintf(f, "perspective_angle=\"%g\" ", x->perspective_angle);
fprintf(f, "perspective_dist=\"%g\" ", x->perspective_dist);
}
if (juliaN_var==1) {
fprintf(f, "julian_power=\"%g\" ", x->julian_power);
fprintf(f, "julian_dist=\"%g\" ", x->julian_dist);
}
if (juliaScope_var==1) {
fprintf(f, "juliascope_power=\"%g\" ", x->juliascope_power);
fprintf(f, "juliascope_dist=\"%g\" ", x->juliascope_dist);
}
if (radialBlur_var==1) {
fprintf(f, "radial_blur_angle=\"%g\" ", x->radial_blur_angle);
}
if (pie_var==1) {
fprintf(f, "pie_slices=\"%g\" ", x->pie_slices);
fprintf(f, "pie_rotation=\"%g\" ", x->pie_rotation);
fprintf(f, "pie_thickness=\"%g\" ", x->pie_thickness);
}
if (ngon_var==1) {
fprintf(f, "ngon_sides=\"%g\" ", x->ngon_sides);
fprintf(f, "ngon_power=\"%g\" ", x->ngon_power);
fprintf(f, "ngon_corners=\"%g\" ", x->ngon_corners);
fprintf(f, "ngon_circle=\"%g\" ", x->ngon_circle);
}
if (curl_var==1) {
fprintf(f, "curl_c1=\"%g\" ", x->curl_c1);
fprintf(f, "curl_c2=\"%g\" ", x->curl_c2);
}
if (rectangles_var==1) {
fprintf(f, "rectangles_x=\"%g\" ", x->rectangles_x);
fprintf(f, "rectangles_y=\"%g\" ", x->rectangles_y);
}
if (disc2_var==1) {
fprintf(f, "disc2_rot=\"%g\" ", x->disc2_rot);
fprintf(f, "disc2_twist=\"%g\" ", x->disc2_twist);
}
if (supershape_var==1) {
fprintf(f, "super_shape_rnd=\"%g\" ", x->super_shape_rnd);
fprintf(f, "super_shape_m=\"%g\" ", x->super_shape_m);
fprintf(f, "super_shape_n1=\"%g\" ", x->super_shape_n1);
fprintf(f, "super_shape_n2=\"%g\" ", x->super_shape_n2);
fprintf(f, "super_shape_n3=\"%g\" ", x->super_shape_n3);
fprintf(f, "super_shape_holes=\"%g\" ", x->super_shape_holes);
}
if (flower_var==1) {
fprintf(f, "flower_petals=\"%g\" ", x->flower_petals);
fprintf(f, "flower_holes=\"%g\" ", x->flower_holes);
}
if (conic_var==1) {
fprintf(f, "conic_eccentricity=\"%g\" ", x->conic_eccentricity);
fprintf(f, "conic_holes=\"%g\" ", x->conic_holes);
}
if (parabola_var==1) {
fprintf(f, "parabola_height=\"%g\" ", x->parabola_height);
fprintf(f, "parabola_width=\"%g\" ", x->parabola_width);
}
if (bent2_var==1) {
fprintf(f, "bent2_x=\"%g\" ", x->bent2_x);
fprintf(f, "bent2_y=\"%g\" ", x->bent2_y);
}
if (bipolar_var==1) {
fprintf(f, "bipolar_shift=\"%g\" ", x->bipolar_shift);
}
if (cell_var==1) {
fprintf(f, "cell_size=\"%g\" ", x->cell_size);
}
if (cpow_var==1) {
fprintf(f, "cpow_i=\"%g\" ", x->cpow_i);
fprintf(f, "cpow_r=\"%g\" ", x->cpow_r);
fprintf(f, "cpow_power=\"%g\" ", x->cpow_power);
}
if (curve_var==1) {
fprintf(f, "curve_xamp=\"%g\" ", x->curve_xamp);
fprintf(f, "curve_yamp=\"%g\" ", x->curve_yamp);
fprintf(f, "curve_xlength=\"%g\" ", x->curve_xlength);
fprintf(f, "curve_ylength=\"%g\" ", x->curve_ylength);
}
if (escher_var==1) {
fprintf(f, "escher_beta=\"%g\" ", x->escher_beta);
}
if (lazys_var==1) {
fprintf(f, "lazysusan_x=\"%g\" ", x->lazysusan_x);
fprintf(f, "lazysusan_y=\"%g\" ", x->lazysusan_y);
fprintf(f, "lazysusan_spin=\"%g\" ", x->lazysusan_spin);
fprintf(f, "lazysusan_space=\"%g\" ", x->lazysusan_space);
fprintf(f, "lazysusan_twist=\"%g\" ", x->lazysusan_twist);
}
if (modulus_var==1) {
fprintf(f, "modulus_x=\"%g\" ", x->modulus_x);
fprintf(f, "modulus_y=\"%g\" ", x->modulus_y);
}
if (oscope_var==1) {
fprintf(f, "oscilloscope_separation=\"%g\" ", x->oscope_separation);
fprintf(f, "oscilloscope_frequency=\"%g\" ", x->oscope_frequency);
fprintf(f, "oscilloscope_amplitude=\"%g\" ", x->oscope_amplitude);
fprintf(f, "oscilloscope_damping=\"%g\" ", x->oscope_damping);
}
if (popcorn2_var==1) {
fprintf(f, "popcorn2_x=\"%g\" ", x->popcorn2_x);
fprintf(f, "popcorn2_y=\"%g\" ", x->popcorn2_y);
fprintf(f, "popcorn2_c=\"%g\" ", x->popcorn2_c);
}
if (separation_var==1) {
fprintf(f, "separation_x=\"%g\" ", x->separation_x);
fprintf(f, "separation_y=\"%g\" ", x->separation_y);
fprintf(f, "separation_xinside=\"%g\" ", x->separation_xinside);
fprintf(f, "separation_yinside=\"%g\" ", x->separation_yinside);
}
if (split_var==1) {
fprintf(f, "split_xsize=\"%g\" ", x->split_xsize);
fprintf(f, "split_ysize=\"%g\" ", x->split_ysize);
}
if (splits_var==1) {
fprintf(f, "splits_x=\"%g\" ", x->splits_x);
fprintf(f, "splits_y=\"%g\" ", x->splits_y);
}
if (stripes_var==1) {
fprintf(f, "stripes_space=\"%g\" ", x->stripes_space);
fprintf(f, "stripes_warp=\"%g\" ", x->stripes_warp);
}
if (wedge_var==1) {
fprintf(f, "wedge_angle=\"%g\" ", x->wedge_angle);
fprintf(f, "wedge_hole=\"%g\" ", x->wedge_hole);
fprintf(f, "wedge_count=\"%g\" ", x->wedge_count);
fprintf(f, "wedge_swirl=\"%g\" ", x->wedge_swirl);
}
if (wedgeJ_var==1) {
fprintf(f, "wedge_julia_angle=\"%g\" ", x->wedge_julia_angle);
fprintf(f, "wedge_julia_count=\"%g\" ", x->wedge_julia_count);
fprintf(f, "wedge_julia_power=\"%g\" ", x->wedge_julia_power);
fprintf(f, "wedge_julia_dist=\"%g\" ", x->wedge_julia_dist);
}
if (wedgeS_var==1) {
fprintf(f, "wedge_sph_angle=\"%g\" ", x->wedge_sph_angle);
fprintf(f, "wedge_sph_hole=\"%g\" ", x->wedge_sph_hole);
fprintf(f, "wedge_sph_count=\"%g\" ", x->wedge_sph_count);
fprintf(f, "wedge_sph_swirl=\"%g\" ", x->wedge_sph_swirl);
}
if (whorl_var==1) {
fprintf(f, "whorl_inside=\"%g\" ", x->whorl_inside);
fprintf(f, "whorl_outside=\"%g\" ", x->whorl_outside);
}
if (waves2_var==1) {
fprintf(f, "waves2_scalex=\"%g\" ", x->waves2_scalex);
fprintf(f, "waves2_scaley=\"%g\" ", x->waves2_scaley);
fprintf(f, "waves2_freqx=\"%g\" ", x->waves2_freqx);
fprintf(f, "waves2_freqy=\"%g\" ", x->waves2_freqy);
}
if (auger_var==1) {
fprintf(f, "auger_sym=\"%g\" ", x->auger_sym);
fprintf(f, "auger_weight=\"%g\" ", x->auger_weight);
fprintf(f, "auger_freq=\"%g\" ", x->auger_freq);
fprintf(f, "auger_scale=\"%g\" ", x->auger_scale);
}
if (flux_var==1)
fprintf(f, "flux_spread=\"%g\" ", x->flux_spread);
if (mobius_var==1) {
fprintf(f, "mobius_re_a=\"%g\" ", x->mobius_re_a);
fprintf(f, "mobius_im_a=\"%g\" ", x->mobius_im_a);
fprintf(f, "mobius_re_b=\"%g\" ", x->mobius_re_b);
fprintf(f, "mobius_im_b=\"%g\" ", x->mobius_im_b);
fprintf(f, "mobius_re_c=\"%g\" ", x->mobius_re_c);
fprintf(f, "mobius_im_c=\"%g\" ", x->mobius_im_c);
fprintf(f, "mobius_re_d=\"%g\" ", x->mobius_re_d);
fprintf(f, "mobius_im_d=\"%g\" ", x->mobius_im_d);
}
fprintf(f, "coefs=\"");
for (j = 0; j < 3; j++) {
if (j) fprintf(f, " ");
fprintf(f, "%g %g", x->c[j][0], x->c[j][1]);
}
fprintf(f, "\"");
if (!id_matrix(x->post)) {
fprintf(f, " post=\"");
for (j = 0; j < 3; j++) {
if (j) fprintf(f, " ");
fprintf(f, "%g %g", x->post[j][0], x->post[j][1]);
}
fprintf(f, "\"");
}
} else {
/* For motion, print any parameter if it's nonzero */
PRINTNON(blob_low);
PRINTNON(blob_high);
PRINTNON(blob_waves);
PRINTNON(pdj_a);
PRINTNON(pdj_b);
PRINTNON(pdj_c);
PRINTNON(pdj_d);
PRINTNON(fan2_x);
PRINTNON(fan2_y);
PRINTNON(rings2_val);
PRINTNON(perspective_angle);
PRINTNON(perspective_dist);
PRINTNON(julian_power);
PRINTNON(julian_dist);
PRINTNON(juliascope_power);
PRINTNON(juliascope_dist);
PRINTNON(radial_blur_angle);
PRINTNON(pie_slices);
PRINTNON(pie_rotation);
PRINTNON(pie_thickness);
PRINTNON(ngon_sides);
PRINTNON(ngon_power);
PRINTNON(ngon_corners);
PRINTNON(ngon_circle);
PRINTNON(curl_c1);
PRINTNON(curl_c2);
PRINTNON(rectangles_x);
PRINTNON(rectangles_y);
PRINTNON(disc2_rot);
PRINTNON(disc2_twist);
PRINTNON(super_shape_rnd);
PRINTNON(super_shape_m);
PRINTNON(super_shape_n1);
PRINTNON(super_shape_n2);
PRINTNON(super_shape_n3);
PRINTNON(super_shape_holes);
PRINTNON(flower_petals);
PRINTNON(flower_holes);
PRINTNON(conic_eccentricity);
PRINTNON(conic_holes);
PRINTNON(parabola_height);
PRINTNON(parabola_width);
PRINTNON(bent2_x);
PRINTNON(bent2_y);
PRINTNON(bipolar_shift);
PRINTNON(cell_size);
PRINTNON(cpow_i);
PRINTNON(cpow_r);
PRINTNON(cpow_power);
PRINTNON(curve_xamp);
PRINTNON(curve_yamp);
PRINTNON(curve_xlength);
PRINTNON(curve_ylength);
PRINTNON(escher_beta);
PRINTNON(lazysusan_x);
PRINTNON(lazysusan_y);
PRINTNON(lazysusan_spin);
PRINTNON(lazysusan_space);
PRINTNON(lazysusan_twist);
PRINTNON(modulus_x);
PRINTNON(modulus_y);
PRINTNON(oscope_separation);
PRINTNON(oscope_frequency);
PRINTNON(oscope_amplitude);
PRINTNON(oscope_damping);
PRINTNON(popcorn2_x);
PRINTNON(popcorn2_y);
PRINTNON(popcorn2_c);
PRINTNON(separation_x);
PRINTNON(separation_y);
PRINTNON(separation_xinside);
PRINTNON(separation_yinside);
PRINTNON(split_xsize);
PRINTNON(split_ysize);
PRINTNON(splits_x);
PRINTNON(splits_y);
PRINTNON(stripes_space);
PRINTNON(stripes_warp);
PRINTNON(wedge_angle);
PRINTNON(wedge_hole);
PRINTNON(wedge_count);
PRINTNON(wedge_swirl);
PRINTNON(wedge_julia_angle);
PRINTNON(wedge_julia_count);
PRINTNON(wedge_julia_power);
PRINTNON(wedge_julia_dist);
PRINTNON(wedge_sph_angle);
PRINTNON(wedge_sph_hole);
PRINTNON(wedge_sph_count);
PRINTNON(wedge_sph_swirl);
PRINTNON(whorl_inside);
PRINTNON(whorl_outside);
PRINTNON(waves2_scalex);
PRINTNON(waves2_scaley);
PRINTNON(waves2_freqx);
PRINTNON(waves2_freqy);
PRINTNON(auger_sym);
PRINTNON(auger_weight);
PRINTNON(auger_freq);
PRINTNON(auger_scale);
PRINTNON(flux_spread);
PRINTNON(mobius_re_a);
PRINTNON(mobius_im_a);
PRINTNON(mobius_re_b);
PRINTNON(mobius_im_b);
PRINTNON(mobius_re_c);
PRINTNON(mobius_im_c);
PRINTNON(mobius_re_d);
PRINTNON(mobius_im_d);
if (!zero_matrix(x->c)) {
fprintf(f, "coefs=\"");
for (j = 0; j < 3; j++) {
if (j) fprintf(f, " ");
fprintf(f, "%g %g", x->c[j][0], x->c[j][1]);
}
fprintf(f, "\"");
}
if (!zero_matrix(x->post)) {
fprintf(f, " post=\"");
for (j = 0; j < 3; j++) {
if (j) fprintf(f, " ");
fprintf(f, "%g %g", x->post[j][0], x->post[j][1]);
}
fprintf(f, "\"");
}
}
if (!final_flag && !motion_flag && !flam27_flag) {
/* Print out the chaos row for this xform */
int numcols = numstd;
while (numcols > 0 && chaos_row[numcols-1]==1.0)
numcols--;
if (numcols>0) {
fprintf(f, " chaos=\"");
for (j=0;j<numcols;j++)
fprintf(f, "%g ",chaos_row[j]);
fprintf(f, "\"");
}
}
if (!flam27_flag && !motion_flag) {
fprintf(f, " opacity=\"%g\"",x->opacity);
}
if (!motion_flag && x->num_motion>0 && !flam27_flag) {
int nm;
fprintf(f,">\n");
for (nm=0; nm<x->num_motion; nm++)
flam3_print_xform(f, &(x->motion[nm]), 0, 0, NULL, 1);
if (final_flag)
fprintf(f," </finalxform>\n");
else
fprintf(f," </xform>\n");
} else
fprintf(f, "/>\n");
}
/* returns a uniform variable from 0 to 1 */
double flam3_random01() {
return (random() & 0xfffffff) / (double) 0xfffffff;
}
double flam3_random11() {
return ((random() & 0xfffffff) - 0x7ffffff) / (double) 0x7ffffff;
}
/* This function must be called prior to rendering a frame */
void flam3_init_frame(flam3_frame *f) {
char *ai;
char *isaac_seed = args("isaac_seed",NULL);
long int default_isaac_seed = (long int)time(0);
/* Clear out the isaac state */
memset(f->rc.randrsl, 0, RANDSIZ*sizeof(ub4));
/* Set the isaac seed */
if (NULL == isaac_seed) {
int lp;
/* No isaac seed specified. Use the system time to initialize. */
for (lp = 0; lp < RANDSIZ; lp++)
f->rc.randrsl[lp] = default_isaac_seed;
} else {
/* Use the specified string */
strncpy((char *)&f->rc.randrsl,(const char *)isaac_seed, RANDSIZ*sizeof(ub4));
}
/* Initialize the random number generator */
irandinit(&f->rc,1);
}
/* returns uniform variable from ISAAC rng */
double flam3_random_isaac_01(randctx *ct) {
return ((int)irand(ct) & 0xfffffff) / (double) 0xfffffff;
}
double flam3_random_isaac_11(randctx *ct) {
return (((int)irand(ct) & 0xfffffff) - 0x7ffffff) / (double) 0x7ffffff;
}
int flam3_random_bit() {
/* might not be threadsafe */
static int n = 0;
static int l;
if (0 == n) {
l = random();
n = 20;
} else {
l = l >> 1;
n--;
}
return l & 1;
}
int flam3_random_isaac_bit(randctx *ct) {
int tmp = irand(ct);
return tmp & 1;
}
static double round6(double x) {
x *= 1e6;
if (x < 0) x -= 1.0;
return 1e-6*(int)(x+0.5);
}
/* sym=2 or more means rotational
sym=1 means identity, ie no symmetry
sym=0 means pick a random symmetry (maybe none)
sym=-1 means bilateral (reflection)
sym=-2 or less means rotational and reflective
*/
void flam3_add_symmetry(flam3_genome *cp, int sym) {
int i, j, k;
double a;
int result = 0;
if (0 == sym) {
static int sym_distrib[] = {
-4, -3,
-2, -2, -2,
-1, -1, -1,
2, 2, 2,
3, 3,
4, 4,
};
if (random()&1) {
sym = random_distrib(sym_distrib);
} else if (random()&31) {
sym = (random()%13)-6;
} else {
sym = (random()%51)-25;
}
}
if (1 == sym || 0 == sym) return;
cp->symmetry = sym;
if (sym < 0) {
i = cp->num_xforms;
if (cp->final_xform_enable)
i -= 1;
flam3_add_xforms(cp,1,0,0);
cp->xform[i].density = 1.0;
cp->xform[i].color_speed = 0.0;
cp->xform[i].animate = 0.0;
cp->xform[i].var[0] = 1.0;
for (j = 1; j < flam3_nvariations; j++)
cp->xform[i].var[j] = 0;
cp->xform[i].color = 1.0;
cp->xform[i].c[0][0] = -1.0;
cp->xform[i].c[0][1] = 0.0;
cp->xform[i].c[1][0] = 0.0;
cp->xform[i].c[1][1] = 1.0;
cp->xform[i].c[2][0] = 0.0;
cp->xform[i].c[2][1] = 0.0;
result++;
sym = -sym;
}
a = 2*M_PI/sym;
for (k = 1; k < sym; k++) {
i = cp->num_xforms;
if (cp->final_xform_enable)
i -= 1;
flam3_add_xforms(cp, 1, 0,0);
cp->xform[i].density = 1.0;
cp->xform[i].color_speed = 0.0;
cp->xform[i].animate = 0.0;
cp->xform[i].var[0] = 1.0;
for (j = 1; j < flam3_nvariations; j++)
cp->xform[i].var[j] = 0;
cp->xform[i].color = (sym<3) ? 0.0 : ((k-1.0)/(sym-2.0));
cp->xform[i].c[0][0] = round6(cos(k*a));
cp->xform[i].c[0][1] = round6(sin(k*a));
cp->xform[i].c[1][0] = round6(-cp->xform[i].c[0][1]);
cp->xform[i].c[1][1] = cp->xform[i].c[0][0];
cp->xform[i].c[2][0] = 0.0;
cp->xform[i].c[2][1] = 0.0;
result++;
}
qsort((char *) &cp->xform[cp->num_xforms-result], result,
sizeof(flam3_xform), compare_xforms);
}
void add_to_action(char *action, char *addtoaction) {
/* action is a flam3_max_action_length array */
if (action != NULL) {
int alen = strlen(action);
int addlen = strlen(addtoaction);
if (alen+addlen < flam3_max_action_length)
strcat(action,addtoaction);
else
fprintf(stderr,"action string too long, truncating...\n");
}
}
void flam3_cross(flam3_genome *cp0, flam3_genome *cp1, flam3_genome *out, int cross_mode, randctx *rc, char *action) {
int i,j, rb;
char ministr[10];
if (cross_mode == CROSS_NOT_SPECIFIED) {
double s = flam3_random_isaac_01(rc);
if (s < 0.1)
cross_mode = CROSS_UNION;
else if (s < 0.2)
cross_mode = CROSS_INTERPOLATE;
else
cross_mode = CROSS_ALTERNATE;
}
if (cross_mode == CROSS_UNION) {
flam3_xform mycopy;
/* Make a copy of cp0 */
flam3_copy(out, cp0);
for (j=0;j<cp1->num_xforms;j++) {
/* Skip over the final xform, if it's present. */
/* Default behavior keeps the final from parent0. */
if (cp1->final_xform_index == j)
continue;
i = out->num_xforms;
if (out->final_xform_enable)
i -= 1;
flam3_add_xforms(out, 1, 0, 0);
flam3_copy_xform(&out->xform[i],&cp1->xform[j]);
}
/* Put the final xform last (if there is one) */
/* We do not need to do complicated xform copies here since we're just moving them around */
if (out->final_xform_index >= 0) {
mycopy = out->xform[out->final_xform_index];
out->xform[out->final_xform_index] = out->xform[out->num_xforms-1];
out->xform[out->num_xforms-1] = mycopy;
out->final_xform_index = out->num_xforms-1;
}
add_to_action(action,"cross union");
} else if (cross_mode == CROSS_INTERPOLATE) {
/* linearly interpolate somewhere between the two */
flam3_genome parents[2];
double t = flam3_random_isaac_01(rc);
memset(parents, 0, 2*sizeof(flam3_genome));
flam3_copy(&(parents[0]), cp0);
flam3_copy(&(parents[1]), cp1);
parents[0].time = 0.0;
parents[1].time = 1.0;
flam3_interpolate(parents, 2, t, 0, out);
for (i=0;i<out->num_xforms;i++)
flam3_delete_motion_elements(&out->xform[i]);
clear_cp(&parents[0],flam3_defaults_on);
clear_cp(&parents[1],flam3_defaults_on);
sprintf(ministr,"%7.5g",t);
add_to_action(action,"cross interpolate ");
add_to_action(action,ministr);
} else {
/* alternate mode */
int got0, got1, used_parent;
char *trystr;
trystr = calloc(4 * (cp0->num_xforms + cp1->num_xforms), sizeof(char));
/* each xform comes from a random parent, possible for an entire parent to be excluded */
do {
trystr[0] = 0;
got0 = got1 = 0;
rb = flam3_random_isaac_bit(rc);
sprintf(ministr,"%d:",rb);
strcat(trystr,ministr);
/* Copy the parent, sorting the final xform to the end if it's present. */
if (rb)
flam3_copyx(out, cp1, cp1->num_xforms - (cp1->final_xform_index > 0), cp1->final_xform_enable);
else
flam3_copyx(out, cp0, cp0->num_xforms - (cp0->final_xform_index > 0), cp0->final_xform_enable);
used_parent = rb;
/* Only replace non-final xforms */
for (i = 0; i < out->num_xforms - out->final_xform_enable; i++) {
rb = flam3_random_isaac_bit(rc);
/* Replace xform if bit is 1 */
if (rb==1) {
if (used_parent==0) {
if (i < cp1->num_xforms && cp1->xform[i].density > 0) {
flam3_copy_xform(&out->xform[i],&cp1->xform[i]);
sprintf(ministr," 1");
got1 = 1;
} else {
sprintf(ministr," 0");
got0 = 1;
}
} else {
if (i < cp0->num_xforms && cp0->xform[i].density > 0) {
flam3_copy_xform(&out->xform[i],&cp0->xform[i]);
sprintf(ministr," 0");
got0 = 1;
} else {
sprintf(ministr," 1");
got1 = 1;
}
}
} else {
sprintf(ministr," %d",used_parent);
if (used_parent)
got1 = 1;
else
got0 = 1;
}
strcat(trystr,ministr);
}
if (used_parent==0 && cp0->final_xform_enable)
got0 = 1;
else if (used_parent==1 && cp1->final_xform_enable)
got1 = 1;
} while ((i > 1) && !(got0 && got1));
add_to_action(action,"cross alternate ");
add_to_action(action,trystr);
free(trystr);
}
/* reset color coords */
for (i = 0; i < out->num_xforms; i++) {
out->xform[i].color = i&1;
}
/* Potentially genetically cross the two colormaps together */
if (flam3_random_isaac_01(rc) < 0.4) {
/* Select the starting parent */
int startParent=flam3_random_isaac_bit(rc);
int ci;
add_to_action(action," cmap_cross");
sprintf(ministr," %d:",startParent);
add_to_action(action,ministr);
/* Loop over the entries, switching to the other parent 1% of the time */
for (ci=0;ci<256;ci++) {
if (flam3_random_isaac_01(rc)<.01) {
startParent = 1-startParent;
sprintf(ministr," %d",ci);
add_to_action(action,ministr);
}
out->palette[ci] = startParent ? cp1->palette[ci]: cp0->palette[ci];
}
}
}
void flam3_mutate(flam3_genome *cp, int mutate_mode, int *ivars, int ivars_n, int sym, double speed, randctx *rc, char *action) {
double randselect;
flam3_genome mutation;
int i,j,done;
char ministr[30];
/* If mutate_mode = -1, choose a random mutation mode */
if (mutate_mode == MUTATE_NOT_SPECIFIED) {
randselect = flam3_random_isaac_01(rc);
if (randselect < 0.1)
mutate_mode = MUTATE_ALL_VARIATIONS;
else if (randselect < 0.3)
mutate_mode = MUTATE_ONE_XFORM_COEFS;
else if (randselect < 0.5)
mutate_mode = MUTATE_ADD_SYMMETRY;
else if (randselect < 0.6)
mutate_mode = MUTATE_POST_XFORMS;
else if (randselect < 0.7)
mutate_mode = MUTATE_COLOR_PALETTE;
else if (randselect < 0.8)
mutate_mode = MUTATE_DELETE_XFORM;
else
mutate_mode = MUTATE_ALL_COEFS;
}
memset(&mutation, 0, sizeof(flam3_genome));
if (mutate_mode == MUTATE_ALL_VARIATIONS) {
add_to_action(action,"mutate all variations");
do {
/* Create a random flame, and use the variations */
/* to replace those in the original */
flam3_random(&mutation, ivars, ivars_n, sym, cp->num_xforms);
for (i = 0; i < cp->num_xforms; i++) {
for (j = 0; j < flam3_nvariations; j++) {
if (cp->xform[i].var[j] != mutation.xform[i].var[j]) {
/* Copy the new var weights */
cp->xform[i].var[j] = mutation.xform[i].var[j];
/* Copy parameters for this variation only */
flam3_copy_params(&(cp->xform[i]),&(mutation.xform[i]),j);
done = 1;
}
}
}
} while (!done);
} else if (mutate_mode == MUTATE_ONE_XFORM_COEFS) {
int modxf;
/* Generate a 2-xform random */
flam3_random(&mutation, ivars, ivars_n, sym, 2);
/* Which xform do we mutate? */
modxf = ((unsigned)irand(rc)) % cp->num_xforms;
add_to_action(action,"mutate xform ");
sprintf(ministr,"%d coefs",modxf);
add_to_action(action,ministr);
/* if less than 3 xforms, then change only the translation part */
if (2 >= cp->num_xforms) {
for (j = 0; j < 2; j++)
cp->xform[modxf].c[2][j] = mutation.xform[0].c[2][j];
} else {
for (i = 0; i < 3; i++)
for (j = 0; j < 2; j++)
cp->xform[modxf].c[i][j] = mutation.xform[0].c[i][j];
}
} else if (mutate_mode == MUTATE_ADD_SYMMETRY) {
add_to_action(action,"mutate symmetry");
flam3_add_symmetry(cp, 0);
} else if (mutate_mode == MUTATE_POST_XFORMS) {
int b = 1 + ((unsigned)irand(rc))%6;
int same = ((unsigned)irand(rc))&3; /* 25% chance of using the same post for all of them */
sprintf(ministr,"(%d%s)",b,(same>0) ? " same" : "");
add_to_action(action,"mutate post xforms ");
add_to_action(action,ministr);
for (i = 0; i < cp->num_xforms; i++) {
int copy = (i > 0) && same;
if (copy) { /* Copy the post from the first xform to the rest of them */
for (j = 0; j < 3; j++) {
cp->xform[i].post[j][0] = cp->xform[0].post[j][0];
cp->xform[i].post[j][1] = cp->xform[0].post[j][1];
}
} else {
if (b&1) { /* 50% chance */
double f = M_PI * flam3_random_isaac_11(rc);
double t[2][2];
t[0][0] = (cp->xform[i].c[0][0] * cos(f) + cp->xform[i].c[0][1] * -sin(f));
t[0][1] = (cp->xform[i].c[0][0] * sin(f) + cp->xform[i].c[0][1] * cos(f));
t[1][0] = (cp->xform[i].c[1][0] * cos(f) + cp->xform[i].c[1][1] * -sin(f));
t[1][1] = (cp->xform[i].c[1][0] * sin(f) + cp->xform[i].c[1][1] * cos(f));
cp->xform[i].c[0][0] = t[0][0];
cp->xform[i].c[0][1] = t[0][1];
cp->xform[i].c[1][0] = t[1][0];
cp->xform[i].c[1][1] = t[1][1];
f *= -1.0;
t[0][0] = (cp->xform[i].post[0][0] * cos(f) + cp->xform[i].post[0][1] * -sin(f));
t[0][1] = (cp->xform[i].post[0][0] * sin(f) + cp->xform[i].post[0][1] * cos(f));
t[1][0] = (cp->xform[i].post[1][0] * cos(f) + cp->xform[i].post[1][1] * -sin(f));
t[1][1] = (cp->xform[i].post[1][0] * sin(f) + cp->xform[i].post[1][1] * cos(f));
cp->xform[i].post[0][0] = t[0][0];
cp->xform[i].post[0][1] = t[0][1];
cp->xform[i].post[1][0] = t[1][0];
cp->xform[i].post[1][1] = t[1][1];
}
if (b&2) { /* 33% chance */
double f = 0.2 + flam3_random_isaac_01(rc);
double g = 0.2 + flam3_random_isaac_01(rc);
if (flam3_random_isaac_bit(rc))
f = 1.0 / f;
if (flam3_random_isaac_bit(rc))
g = f;
else {
if (flam3_random_isaac_bit(rc))
g = 1.0 / g;
}
cp->xform[i].c[0][0] /= f;
cp->xform[i].c[0][1] /= f;
cp->xform[i].c[1][1] /= g;
cp->xform[i].c[1][0] /= g;
cp->xform[i].post[0][0] *= f;
cp->xform[i].post[1][0] *= f;
cp->xform[i].post[0][1] *= g;
cp->xform[i].post[1][1] *= g;
}
if (b&4) { /* 16% chance */
double f = flam3_random_isaac_11(rc);
double g = flam3_random_isaac_11(rc);
cp->xform[i].c[2][0] -= f;
cp->xform[i].c[2][1] -= g;
cp->xform[i].post[2][0] += f;
cp->xform[i].post[2][1] += g;
}
}
}
} else if (mutate_mode == MUTATE_COLOR_PALETTE) {
double s = flam3_random_isaac_01(rc);
if (s < 0.4) { /* randomize xform color coords */
flam3_improve_colors(cp, 100, 0, 10);
add_to_action(action,"mutate color coords");
} else if (s < 0.8) { /* randomize xform color coords and palette */
flam3_improve_colors(cp, 25, 1, 10);
add_to_action(action,"mutate color all");
} else { /* randomize palette only */
cp->palette_index = flam3_get_palette(flam3_palette_random, cp->palette, cp->hue_rotation);
/* if our palette retrieval fails, skip the mutation */
if (cp->palette_index >= 0)
add_to_action(action,"mutate color palette");
else
fprintf(stderr,"failure getting random palette, palette set to white\n");
}
} else if (mutate_mode == MUTATE_DELETE_XFORM) {
int nx = ((unsigned)irand(rc))%cp->num_xforms;
sprintf(ministr,"%d",nx);
add_to_action(action,"mutate delete xform ");
add_to_action(action,ministr);
if (cp->num_xforms > 1)
flam3_delete_xform(cp,nx);
} else { /* MUTATE_ALL_COEFS */
int x;
add_to_action(action,"mutate all coefs");
flam3_random(&mutation, ivars, ivars_n, sym, cp->num_xforms);
/* change all the coefs by a fraction of the random */
for (x = 0; x < cp->num_xforms; x++) {
for (i = 0; i < 3; i++) {
for (j = 0; j < 2; j++) {
cp->xform[x].c[i][j] += speed * mutation.xform[x].c[i][j];
}
}
/* Eventually, we can mutate the parametric variation coefs here. */
}
}
clear_cp(&mutation,flam3_defaults_on);
}
static int random_var() {
return random() % flam3_nvariations;
}
static int random_varn(int n) {
return random() % n;
}
void flam3_random(flam3_genome *cp, int *ivars, int ivars_n, int sym, int spec_xforms) {
int i, nxforms, var, samed, multid, samepost, postid, addfinal=0;
int finum = -1;
int n;
char *ai;
int f27 = argi("flam27",0);
int mvar = f27 ? 54 : flam3_nvariations;
double sum;
static int xform_distrib[] = {
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4,
5, 5,
6
};
clear_cp(cp,flam3_defaults_on);
cp->hue_rotation = (random()&7) ? 0.0 : flam3_random01();
cp->palette_index = flam3_get_palette(flam3_palette_random, cp->palette, cp->hue_rotation);
if (cp->palette_index < 0)
fprintf(stderr,"error getting palette from xml file, setting to all white\n");
cp->time = 0.0;
cp->interpolation = flam3_interpolation_linear;
cp->palette_interpolation = flam3_palette_interpolation_hsv_circular;
cp->hsv_rgb_palette_blend = 0.0;
/* Choose the number of xforms */
if (spec_xforms>0) {
nxforms = spec_xforms;
flam3_add_xforms(cp,nxforms,0,0);
} else {
nxforms = random_distrib(xform_distrib);
flam3_add_xforms(cp,nxforms,0,0);
/* Add a final xform 15% of the time */
addfinal = flam3_random01() < 0.15;
if (addfinal) {
flam3_add_xforms(cp,1,0,1);
nxforms = nxforms + addfinal;
finum = nxforms-1;
}
}
/* If first input variation is 'flam3_variation_random' */
/* choose one to use or decide to use multiple */
if (flam3_variation_random == ivars[0]) {
if (flam3_random_bit()) {
var = random_varn(mvar);
} else {
var = flam3_variation_random;
}
} else {
var = flam3_variation_random_fromspecified;
}
samed = flam3_random_bit();
multid = flam3_random_bit();
postid = flam3_random01() < 0.6;
samepost = flam3_random_bit();
/* Loop over xforms */
for (i = 0; i < nxforms; i++) {
int j, k;
cp->xform[i].density = 1.0 / nxforms;
cp->xform[i].color = i&1;
cp->xform[i].color_speed = 0.5;
cp->xform[i].animate = 1.0;
for (j = 0; j < 3; j++) {
for (k = 0; k < 2; k++) {
cp->xform[i].c[j][k] = flam3_random11();
cp->xform[i].post[j][k] = (double)(k==j);
}
}
if ( i != finum ) {
if (!postid) {
for (j = 0; j < 3; j++)
for (k = 0; k < 2; k++) {
if (samepost || (i==0))
cp->xform[i].post[j][k] = flam3_random11();
else
cp->xform[i].post[j][k] = cp->xform[0].post[j][k];
}
}
/* Clear all variation coefs */
for (j = 0; j < flam3_nvariations; j++)
cp->xform[i].var[j] = 0.0;
if (flam3_variation_random != var &&
flam3_variation_random_fromspecified != var) {
/* Use only one variation specified for all xforms */
cp->xform[i].var[var] = 1.0;
} else if (multid && flam3_variation_random == var) {
/* Choose a random var for this xform */
cp->xform[i].var[random_varn(mvar)] = 1.0;
} else {
if (samed && i > 0) {
/* Copy the same variations from the previous xform */
for (j = 0; j < flam3_nvariations; j++) {
cp->xform[i].var[j] = cp->xform[i-1].var[j];
flam3_copy_params(&(cp->xform[i]),&(cp->xform[i-1]),j);
}
} else {
/* Choose a random number of vars to use, at least 2 */
/* but less than flam3_nvariations.Probability leans */
/* towards fewer variations. */
n = 2;
while ((flam3_random_bit()) && (n<mvar))
n++;
/* Randomly choose n variations, and change their weights. */
/* A var can be selected more than once, further reducing */
/* the probability that multiple vars are used. */
for (j = 0; j < n; j++) {
if (flam3_variation_random_fromspecified != var)
cp->xform[i].var[random_varn(mvar)] = flam3_random01();
else
cp->xform[i].var[ivars[random_varn(ivars_n)]] = flam3_random01();
}
/* Normalize weights to 1.0 total. */
sum = 0.0;
for (j = 0; j < flam3_nvariations; j++)
sum += cp->xform[i].var[j];
if (sum == 0.0)
cp->xform[i].var[random_var()] = 1.0;
else {
for (j = 0; j < flam3_nvariations; j++)
cp->xform[i].var[j] /= sum;
}
}
}
} else {
/* Handle final xform randomness. */
n = 1;
if (flam3_random_bit()) n++;
/* Randomly choose n variations, and change their weights. */
/* A var can be selected more than once, further reducing */
/* the probability that multiple vars are used. */
for (j = 0; j < n; j++) {
if (flam3_variation_random_fromspecified != var)
cp->xform[i].var[random_varn(mvar)] = flam3_random01();
else
cp->xform[i].var[ivars[random_varn(ivars_n)]] = flam3_random01();
}
/* Normalize weights to 1.0 total. */
sum = 0.0;
for (j = 0; j < flam3_nvariations; j++)
sum += cp->xform[i].var[j];
if (sum == 0.0)
cp->xform[i].var[random_var()] = 1.0;
else {
for (j = 0; j < flam3_nvariations; j++)
cp->xform[i].var[j] /= sum;
}
}
/* Generate random params for parametric variations, if selected. */
if (cp->xform[i].var[VAR_BLOB] > 0) {
/* Create random params for blob */
cp->xform[i].blob_low = 0.2 + 0.5 * flam3_random01();
cp->xform[i].blob_high = 0.8 + 0.4 * flam3_random01();
cp->xform[i].blob_waves = (int)(2 + 5 * flam3_random01());
}
if (cp->xform[i].var[VAR_PDJ] > 0) {
/* Create random params for PDJ */
cp->xform[i].pdj_a = 3.0 * flam3_random11();
cp->xform[i].pdj_b = 3.0 * flam3_random11();
cp->xform[i].pdj_c = 3.0 * flam3_random11();
cp->xform[i].pdj_d = 3.0 * flam3_random11();
}
if (cp->xform[i].var[VAR_FAN2] > 0) {
/* Create random params for fan2 */
cp->xform[i].fan2_x = flam3_random11();
cp->xform[i].fan2_y = flam3_random11();
}
if (cp->xform[i].var[VAR_RINGS2] > 0) {
/* Create random params for rings2 */
cp->xform[i].rings2_val = 2*flam3_random01();
}
if (cp->xform[i].var[VAR_PERSPECTIVE] > 0) {
/* Create random params for perspective */
cp->xform[i].perspective_angle = flam3_random01();
cp->xform[i].perspective_dist = 2*flam3_random01() + 1.0;
}
if (cp->xform[i].var[VAR_JULIAN] > 0) {
/* Create random params for julian */
cp->xform[i].julian_power = (int)(5*flam3_random01() + 2);
cp->xform[i].julian_dist = 1.0;
}
if (cp->xform[i].var[VAR_JULIASCOPE] > 0) {
/* Create random params for juliaScope */
cp->xform[i].juliascope_power = (int)(5*flam3_random01() + 2);
cp->xform[i].juliascope_dist = 1.0;
}
if (cp->xform[i].var[VAR_RADIAL_BLUR] > 0) {
/* Create random params for radialBlur */
cp->xform[i].radial_blur_angle = (2 * flam3_random01() - 1);
}
if (cp->xform[i].var[VAR_PIE] > 0) {
/* Create random params for pie */
cp->xform[i].pie_slices = (int) 10.0*flam3_random01();
cp->xform[i].pie_thickness = flam3_random01();
cp->xform[i].pie_rotation = 2.0 * M_PI * flam3_random11();
}
if (cp->xform[i].var[VAR_NGON] > 0) {
/* Create random params for ngon */
cp->xform[i].ngon_sides = (int) flam3_random01()* 10 + 3;
cp->xform[i].ngon_power = 3*flam3_random01() + 1;
cp->xform[i].ngon_circle = 3*flam3_random01();
cp->xform[i].ngon_corners = 2*flam3_random01()*cp->xform[i].ngon_circle;
}
if (cp->xform[i].var[VAR_CURL] > 0) {
/* Create random params for curl */
cp->xform[i].curl_c1 = flam3_random01();
cp->xform[i].curl_c2 = flam3_random01();
}
if (cp->xform[i].var[VAR_RECTANGLES] > 0) {
/* Create random params for rectangles */
cp->xform[i].rectangles_x = flam3_random01();
cp->xform[i].rectangles_y = flam3_random01();
}
if (cp->xform[i].var[VAR_DISC2] > 0) {
/* Create random params for disc2 */
cp->xform[i].disc2_rot = 0.5 * flam3_random01();
cp->xform[i].disc2_twist = 0.5 * flam3_random01();
}
if (cp->xform[i].var[VAR_SUPER_SHAPE] > 0) {
/* Create random params for supershape */
cp->xform[i].super_shape_rnd = flam3_random01();
cp->xform[i].super_shape_m = (int) flam3_random01()*6;
cp->xform[i].super_shape_n1 = flam3_random01()*40;
cp->xform[i].super_shape_n2 = flam3_random01()*20;
cp->xform[i].super_shape_n3 = cp->xform[i].super_shape_n2;
cp->xform[i].super_shape_holes = 0.0;
}
if (cp->xform[i].var[VAR_FLOWER] > 0) {
/* Create random params for flower */
cp->xform[i].flower_petals = 4 * flam3_random01();
cp->xform[i].flower_holes = flam3_random01();
}
if (cp->xform[i].var[VAR_CONIC] > 0) {
/* Create random params for conic */
cp->xform[i].conic_eccentricity = flam3_random01();
cp->xform[i].conic_holes = flam3_random01();
}
if (cp->xform[i].var[VAR_PARABOLA] > 0) {
/* Create random params for parabola */
cp->xform[i].parabola_height = 0.5 + flam3_random01();
cp->xform[i].parabola_width = 0.5 + flam3_random01();
}
if (cp->xform[i].var[VAR_BENT2] > 0) {
/* Create random params for bent2 */
cp->xform[i].bent2_x = 3*(-0.5 + flam3_random01());
cp->xform[i].bent2_y = 3*(-0.5 + flam3_random01());
}
if (cp->xform[i].var[VAR_BIPOLAR] > 0) {
/* Create random params for bipolar */
cp->xform[i].bipolar_shift = 2.0 * flam3_random01() - 1;
}
if (cp->xform[i].var[VAR_CELL] > 0) {
/* Create random params for cell */
cp->xform[i].cell_size = 2.0 * flam3_random01() + 0.5;
}
if (cp->xform[i].var[VAR_CPOW] > 0) {
/* Create random params for cpow */
cp->xform[i].cpow_r = 3.0 * flam3_random01();
cp->xform[i].cpow_i = flam3_random01() - 0.5;
cp->xform[i].cpow_power = (int)(5.0 * flam3_random01());
}
if (cp->xform[i].var[VAR_CURVE] > 0) {
/* Create random params for curve */
cp->xform[i].curve_xamp = 5 * (flam3_random01()-.5);
cp->xform[i].curve_yamp = 4 * (flam3_random01()-.5);
cp->xform[i].curve_xlength = 2 * (flam3_random01()+.5);
cp->xform[i].curve_ylength = 2 * (flam3_random01()+.5);
}
if (cp->xform[i].var[VAR_ESCHER] > 0) {
/* Create random params for escher */
cp->xform[i].escher_beta = M_PI * flam3_random11();
}
if (cp->xform[i].var[VAR_LAZYSUSAN] > 0) {
/* Create random params for lazysusan */
cp->xform[i].lazysusan_x = 2.0*flam3_random11();
cp->xform[i].lazysusan_y = 2.0*flam3_random11();
cp->xform[i].lazysusan_spin = M_PI*flam3_random11();
cp->xform[i].lazysusan_space = 2.0*flam3_random11();
cp->xform[i].lazysusan_twist = 2.0*flam3_random11();
}
if (cp->xform[i].var[VAR_MODULUS] > 0) {
/* Create random params for modulus */
cp->xform[i].modulus_x = flam3_random11();
cp->xform[i].modulus_y = flam3_random11();
}
if (cp->xform[i].var[VAR_OSCILLOSCOPE] > 0) {
/* Create random params for oscope */
cp->xform[i].oscope_separation = 1.0 + flam3_random11();
cp->xform[i].oscope_frequency = M_PI * flam3_random11();
cp->xform[i].oscope_amplitude = 1.0 + 2 * flam3_random01();
cp->xform[i].oscope_damping = flam3_random01();
}
if (cp->xform[i].var[VAR_POPCORN2] > 0) {
/* Create random params for popcorn2 */
cp->xform[i].popcorn2_x = 0.2 * flam3_random01();
cp->xform[i].popcorn2_y = 0.2 * flam3_random01();
cp->xform[i].popcorn2_c = 5 * flam3_random01();
}
if (cp->xform[i].var[VAR_SEPARATION] > 0) {
/* Create random params for separation */
cp->xform[i].separation_x = 1 + flam3_random11();
cp->xform[i].separation_y = 1 + flam3_random11();
cp->xform[i].separation_xinside = flam3_random11();
cp->xform[i].separation_yinside = flam3_random11();
}
if (cp->xform[i].var[VAR_SPLIT] > 0) {
/* Create random params for split */
cp->xform[i].split_xsize = flam3_random11();
cp->xform[i].split_ysize = flam3_random11();
}
if (cp->xform[i].var[VAR_SPLITS] > 0) {
/* Create random params for splits */
cp->xform[i].splits_x = flam3_random11();
cp->xform[i].splits_y = flam3_random11();
}
if (cp->xform[i].var[VAR_STRIPES] > 0) {
/* Create random params for stripes */
cp->xform[i].stripes_space = flam3_random01();
cp->xform[i].stripes_warp = 5*flam3_random01();
}
if (cp->xform[i].var[VAR_WEDGE] > 0) {
/* Create random params for wedge */
cp->xform[i].wedge_angle = M_PI*flam3_random01();
cp->xform[i].wedge_hole = 0.5*flam3_random11();
cp->xform[i].wedge_count = floor(5*flam3_random01())+1;
cp->xform[i].wedge_swirl = flam3_random01();
}
if (cp->xform[i].var[VAR_WEDGE_JULIA] > 0) {
/* Create random params for wedge_julia */
cp->xform[i].wedge_julia_power = (int)(5*flam3_random01() + 2);
cp->xform[i].wedge_julia_dist = 1.0;
cp->xform[i].wedge_julia_count = (int)(3*flam3_random01() + 1);
cp->xform[i].wedge_julia_angle = M_PI * flam3_random01();
}
if (cp->xform[i].var[VAR_WEDGE_SPH] > 0) {
/* Create random params for wedge_sph */
cp->xform[i].wedge_sph_angle = M_PI*flam3_random01();
cp->xform[i].wedge_sph_hole = 0.5*flam3_random11();
cp->xform[i].wedge_sph_count = floor(5*flam3_random01())+1;
cp->xform[i].wedge_sph_swirl = flam3_random01();
}
if (cp->xform[i].var[VAR_WHORL] > 0) {
/* Create random params for whorl */
cp->xform[i].whorl_inside = flam3_random01();
cp->xform[i].whorl_outside = flam3_random01();
}
if (cp->xform[i].var[VAR_WAVES2] > 0) {
/* Create random params for waves2 */
cp->xform[i].waves2_scalex = 0.5 + flam3_random01();
cp->xform[i].waves2_scaley = 0.5 + flam3_random01();
cp->xform[i].waves2_freqx = 4 * flam3_random01();
cp->xform[i].waves2_freqy = 4 * flam3_random01();
}
if (cp->xform[i].var[VAR_AUGER] > 0) {
/* Create random params for auger */
cp->xform[i].auger_sym = 0;
cp->xform[i].auger_weight = 0.5 + flam3_random01()/2.0;
cp->xform[i].auger_freq = floor(5*flam3_random01())+1;
cp->xform[i].auger_scale = flam3_random01();
}
if (cp->xform[i].var[VAR_FLUX] > 0) {
/* Create random params for flux */
cp->xform[i].flux_spread = 0.5 + flam3_random01()/2.0;
}
if (cp->xform[i].var[VAR_MOBIUS] > 0) {
/* Create random params for mobius */
cp->xform[i].mobius_re_a = flam3_random11();
cp->xform[i].mobius_im_a = flam3_random11();
cp->xform[i].mobius_re_b = flam3_random11();
cp->xform[i].mobius_im_b = flam3_random11();
cp->xform[i].mobius_re_c = flam3_random11();
cp->xform[i].mobius_im_c = flam3_random11();
cp->xform[i].mobius_re_d = flam3_random11();
cp->xform[i].mobius_im_d = flam3_random11();
}
}
/* Randomly add symmetry (but not if we've already added a final xform) */
if (sym || (!(random()%4) && !addfinal))
flam3_add_symmetry(cp, sym);
else
cp->symmetry = 0;
//qsort((char *) cp->xform, (cp->num_xforms-addfinal), sizeof(flam3_xform), compare_xforms);
}
static int sort_by_x(const void *av, const void *bv) {
double *a = (double *) av;
double *b = (double *) bv;
if (a[0] < b[0]) return -1;
if (a[0] > b[0]) return 1;
return 0;
}
static int sort_by_y(const void *av, const void *bv) {
double *a = (double *) av;
double *b = (double *) bv;
if (a[1] < b[1]) return -1;
if (a[1] > b[1]) return 1;
return 0;
}
/* Memory helper functions because
Python on Windows uses the MSVCR71.dll version of the C Runtime and
mingw uses the MSVCRT.dll version. */
void *flam3_malloc(size_t size) {
return (malloc(size));
}
void flam3_free(void *ptr) {
free(ptr);
}
/*
* find a 2d bounding box that does not enclose eps of the fractal density
* in each compass direction.
*/
int flam3_estimate_bounding_box(flam3_genome *cp, double eps, int nsamples,
double *bmin, double *bmax, randctx *rc) {
int i;
int low_target, high_target;
double min[2], max[2];
double *points;
int bv;
unsigned short *xform_distrib;
if (nsamples <= 0) nsamples = 10000;
points = (double *) malloc(sizeof(double) * 4 * nsamples);
points[0] = flam3_random_isaac_11(rc);
points[1] = flam3_random_isaac_11(rc);
points[2] = 0.0;
points[3] = 0.0;
if (prepare_precalc_flags(cp))
return(-1);
xform_distrib = flam3_create_xform_distrib(cp);
if (xform_distrib==NULL)
return(-1);
bv=flam3_iterate(cp, nsamples, 20, points, xform_distrib, rc);
free(xform_distrib);
if ( bv/(double)nsamples > eps )
eps = 3*bv/(double)nsamples;
if ( eps > 0.3 )
eps = 0.3;
low_target = (int)(nsamples * eps);
high_target = nsamples - low_target;
min[0] = min[1] = 1e10;
max[0] = max[1] = -1e10;
for (i = 0; i < nsamples; i++) {
double *p = &points[4*i];
if (p[0] < min[0]) min[0] = p[0];
if (p[1] < min[1]) min[1] = p[1];
if (p[0] > max[0]) max[0] = p[0];
if (p[1] > max[1]) max[1] = p[1];
}
if (low_target == 0) {
bmin[0] = min[0];
bmin[1] = min[1];
bmax[0] = max[0];
bmax[1] = max[1];
free(points);
return(bv);
}
qsort(points, nsamples, sizeof(double) * 4, sort_by_x);
bmin[0] = points[4 * low_target];
bmax[0] = points[4 * high_target];
qsort(points, nsamples, sizeof(double) * 4, sort_by_y);
bmin[1] = points[4 * low_target + 1];
bmax[1] = points[4 * high_target + 1];
free(points);
return(bv);
}
typedef double bucket_double[5];
typedef double abucket_double[4];
typedef unsigned int bucket_int[5];
typedef unsigned int abucket_int[4];
typedef float bucket_float[5];
typedef float abucket_float[4];
#ifdef HAVE_GCC_64BIT_ATOMIC_OPS
static inline void
double_atomic_add(double *dest, double delta)
{
uint64_t *int_ptr = (uint64_t *)dest;
union {
double dblval;
uint64_t intval;
} old_val, new_val;
int success;
do {
old_val.dblval = *dest;
new_val.dblval = old_val.dblval + delta;
success = __sync_bool_compare_and_swap(
int_ptr, old_val.intval, new_val.intval);
} while (!success);
}
#endif /* HAVE_GCC_64BIT_ATOMIC_OPS */
#ifdef HAVE_GCC_ATOMIC_OPS
static inline void
float_atomic_add(float *dest, float delta)
{
uint32_t *int_ptr = (uint32_t *)dest;
union {
float fltval;
uint32_t intval;
} old_val, new_val;
int success;
do {
old_val.fltval = *dest;
new_val.fltval = old_val.fltval + delta;
success = __sync_bool_compare_and_swap(
int_ptr, old_val.intval, new_val.intval);
} while (!success);
}
static inline void
uint_atomic_add(unsigned int *dest, unsigned int delta)
{
unsigned int old_val, new_val;
int success;
do {
old_val = *dest;
if (UINT_MAX - old_val > delta)
new_val = old_val + delta;
else
new_val = UINT_MAX;
success = __sync_bool_compare_and_swap(
dest, old_val, new_val);
} while (!success);
}
static inline void
ushort_atomic_add(unsigned short *dest, unsigned short delta)
{
unsigned short old_val, new_val;
int success;
do {
old_val = *dest;
if (USHRT_MAX - old_val > delta)
new_val = old_val + delta;
else
new_val = USHRT_MAX;
success = __sync_bool_compare_and_swap(
dest, old_val, new_val);
} while (!success);
}
#endif /* HAVE_GCC_ATOMIC_OPS */
/* 64-bit datatypes */
#define bucket bucket_double
#define abucket abucket_double
#define abump_no_overflow(dest, delta) do {dest += delta;} while (0)
#define add_c_to_accum(acc,i,ii,j,jj,wid,hgt,c) do { \
if ( (j) + (jj) >=0 && (j) + (jj) < (hgt) && (i) + (ii) >=0 && (i) + (ii) < (wid)) { \
abucket *a = (acc) + ( (i) + (ii) ) + ( (j) + (jj) ) * (wid); \
abump_no_overflow(a[0][0],(c)[0]); \
abump_no_overflow(a[0][1],(c)[1]); \
abump_no_overflow(a[0][2],(c)[2]); \
abump_no_overflow(a[0][3],(c)[3]); \
} \
} while (0)
/* single-threaded */
#define USE_LOCKS
#define bump_no_overflow(dest, delta) do {dest += delta;} while (0)
#define render_rectangle render_rectangle_double
#define iter_thread iter_thread_double
#define de_thread_helper de_thread_helper_64
#define de_thread de_thread_64
#include "rect.c"
#ifdef HAVE_GCC_64BIT_ATOMIC_OPS
/* multi-threaded */
#undef USE_LOCKS
#undef bump_no_overflow
#undef render_rectangle
#undef iter_thread
#undef de_thread_helper
#undef de_thread
#define bump_no_overflow(dest, delta) double_atomic_add(&dest, delta)
#define render_rectangle render_rectangle_double_mt
#define iter_thread iter_thread_double_mt
#define de_thread_helper de_thread_helper_64_mt
#define de_thread de_thread_64_mt
#include "rect.c"
#else /* !HAVE_GCC_64BIT_ATOMIC_OPS */
#define render_rectangle_double_mt render_rectangle_double
#endif /* HAVE_GCC_64BIT_ATOMIC_OPS */
#undef render_rectangle
#undef iter_thread
#undef add_c_to_accum
#undef bucket
#undef abucket
#undef bump_no_overflow
#undef abump_no_overflow
#undef de_thread_helper
#undef de_thread
/* 32-bit datatypes */
#define bucket bucket_int
#define abucket abucket_int
#define abump_no_overflow(dest, delta) do { \
if (UINT_MAX - dest > delta) dest += delta; else dest = UINT_MAX; \
} while (0)
#define add_c_to_accum(acc,i,ii,j,jj,wid,hgt,c) do { \
if ( (j) + (jj) >=0 && (j) + (jj) < (hgt) && (i) + (ii) >=0 && (i) + (ii) < (wid)) { \
abucket *a = (acc) + ( (i) + (ii) ) + ( (j) + (jj) ) * (wid); \
abump_no_overflow(a[0][0],(c)[0]); \
abump_no_overflow(a[0][1],(c)[1]); \
abump_no_overflow(a[0][2],(c)[2]); \
abump_no_overflow(a[0][3],(c)[3]); \
} \
} while (0)
/* single-threaded */
#define USE_LOCKS
#define bump_no_overflow(dest, delta) do { \
if (UINT_MAX - dest > delta) dest += delta; else dest = UINT_MAX; \
} while (0)
#define render_rectangle render_rectangle_int
#define iter_thread iter_thread_int
#define de_thread_helper de_thread_helper_32
#define de_thread de_thread_32
#include "rect.c"
#ifdef HAVE_GCC_ATOMIC_OPS
/* multi-threaded */
#undef USE_LOCKS
#undef bump_no_overflow
#undef render_rectangle
#undef iter_thread
#undef de_thread_helper
#undef de_thread
#define bump_no_overflow(dest, delta) uint_atomic_add(&dest, delta)
#define render_rectangle render_rectangle_int_mt
#define iter_thread iter_thread_int_mt
#define de_thread_helper de_thread_helper_32_mt
#define de_thread de_thread_32_mt
#include "rect.c"
#else /* !HAVE_GCC_ATOMIC_OPS */
#define render_rectangle_int_mt render_rectangle_int
#endif /* HAVE_GCC_ATOMIC_OPS */
#undef iter_thread
#undef render_rectangle
#undef add_c_to_accum
#undef bucket
#undef abucket
#undef bump_no_overflow
#undef abump_no_overflow
#undef de_thread_helper
#undef de_thread
/* experimental 32-bit datatypes (called 33) */
#define bucket bucket_int
#define abucket abucket_float
#define abump_no_overflow(dest, delta) do {dest += delta;} while (0)
#define add_c_to_accum(acc,i,ii,j,jj,wid,hgt,c) do { \
if ( (j) + (jj) >=0 && (j) + (jj) < (hgt) && (i) + (ii) >=0 && (i) + (ii) < (wid)) { \
abucket *a = (acc) + ( (i) + (ii) ) + ( (j) + (jj) ) * (wid); \
abump_no_overflow(a[0][0],(c)[0]); \
abump_no_overflow(a[0][1],(c)[1]); \
abump_no_overflow(a[0][2],(c)[2]); \
abump_no_overflow(a[0][3],(c)[3]); \
} \
} while (0)
/* single-threaded */
#define USE_LOCKS
#define bump_no_overflow(dest, delta) do { \
if (UINT_MAX - dest > delta) dest += delta; else dest = UINT_MAX; \
} while (0)
#define render_rectangle render_rectangle_float
#define iter_thread iter_thread_float
#define de_thread_helper de_thread_helper_33
#define de_thread de_thread_33
#include "rect.c"
#ifdef HAVE_GCC_ATOMIC_OPS
/* multi-threaded */
#undef USE_LOCKS
#undef bump_no_overflow
#undef render_rectangle
#undef iter_thread
#undef de_thread_helper
#undef de_thread
#define bump_no_overflow(dest, delta) uint_atomic_add(&dest, delta)
#define render_rectangle render_rectangle_float_mt
#define iter_thread iter_thread_float_mt
#define de_thread_helper de_thread_helper_33_mt
#define de_thread de_thread_33_mt
#include "rect.c"
#else /* !HAVE_GCC_ATOMIC_OPS */
#define render_rectangle_float_mt render_rectangle_float
#endif /* HAVE_GCC_ATOMIC_OPS */
#undef iter_thread
#undef render_rectangle
#undef add_c_to_accum
#undef bucket
#undef abucket
#undef bump_no_overflow
#undef abump_no_overflow
#undef de_thread_helper
#undef de_thread
double flam3_render_memory_required(flam3_frame *spec)
{
flam3_genome *cps = spec->genomes;
int real_bits = spec->bits;
int real_bytes;
if (33 == real_bits) real_bits = 32;
real_bytes = real_bits / 8;
return
(double) cps[0].spatial_oversample * cps[0].spatial_oversample *
(double) cps[0].width * cps[0].height * real_bytes * 9.0;
}
void bits_error(flam3_frame *spec) {
fprintf(stderr, "flam3: bits must be 32, 33, or 64 not %d.\n",
spec->bits);
}
int flam3_render(flam3_frame *spec, void *out,
int field, int nchan, int trans, stat_struct *stats) {
int retval;
if (spec->nthreads <= 2) {
/* single-threaded or 2 threads without atomic operations */
switch (spec->bits) {
case 32:
retval = render_rectangle_int(spec, out, field, nchan, trans, stats);
return(retval);
case 33:
retval = render_rectangle_float(spec, out, field, nchan, trans, stats);
return(retval);
case 64:
retval = render_rectangle_double(spec, out, field, nchan, trans, stats);
return(retval);
default:
bits_error(spec);
return(1);
}
} else {
/* 3+ threads using atomic ops if available */
switch (spec->bits) {
case 32:
retval = render_rectangle_int_mt(spec, out, field, nchan, trans, stats);
return(retval);
case 33:
retval = render_rectangle_float_mt(spec, out, field, nchan, trans, stats);
return(retval);
case 64:
retval = render_rectangle_double_mt(spec, out, field, nchan, trans, stats);
return(retval);
default:
bits_error(spec);
return(1);
}
}
}
void flam3_srandom() {
unsigned int seed;
char *s = getenv("seed");
if (s)
seed = atoi(s);
else
seed = time(0) + getpid();
srandom(seed);
}
/* correlation dimension, after clint sprott.
computes slope of the correlation sum at a size scale
the order of 2% the size of the attractor or the camera. */
double flam3_dimension(flam3_genome *cp, int ntries, int clip_to_camera) {
double fd;
double *hist;
double bmin[2];
double bmax[2];
double d2max;
int lp;
long int default_isaac_seed = (long int)time(0);
randctx rc;
int SBS = 10000;
int i, n1=0, n2=0, got, nclipped;
/* Set up the isaac rng */
for (lp = 0; lp < RANDSIZ; lp++)
rc.randrsl[lp] = default_isaac_seed;
irandinit(&rc,1);
if (ntries < 2) ntries = 3000*1000;
if (clip_to_camera) {
double scale, ppux, corner0, corner1;
scale = pow(2.0, cp->zoom);
ppux = cp->pixels_per_unit * scale;
corner0 = cp->center[0] - cp->width / ppux / 2.0;
corner1 = cp->center[1] - cp->height / ppux / 2.0;
bmin[0] = corner0;
bmin[1] = corner1;
bmax[0] = corner0 + cp->width / ppux;
bmax[1] = corner1 + cp->height / ppux;
} else {
if (flam3_estimate_bounding_box(cp, 0.0, 0, bmin, bmax, &rc)<0)
return(-1.0);
}
d2max =
(bmax[0] - bmin[0]) * (bmax[0] - bmin[0]) +
(bmax[1] - bmin[1]) * (bmax[1] - bmin[1]);
// fprintf(stderr, "d2max=%g %g %g %g %g\n", d2max,
// bmin[0], bmin[1], bmax[0], bmax[1]);
hist = malloc(2 * ntries * sizeof(double));
got = 0;
nclipped = 0;
while (got < 2*ntries) {
double subb[40000];
int i4, clipped;
unsigned short *xform_distrib;
subb[0] = flam3_random_isaac_11(&rc);
subb[1] = flam3_random_isaac_11(&rc);
subb[2] = 0.0;
subb[3] = 0.0;
if (prepare_precalc_flags(cp))
return(-1.0);
xform_distrib = flam3_create_xform_distrib(cp);
if (xform_distrib==NULL)
return(-1.0);
flam3_iterate(cp, SBS, 20, subb, xform_distrib, &rc);
free(xform_distrib);
i4 = 0;
for (i = 0; i < SBS; i++) {
if (got == 2*ntries) break;
clipped = clip_to_camera &&
((subb[i4] < bmin[0]) ||
(subb[i4+1] < bmin[1]) ||
(subb[i4] > bmax[0]) ||
(subb[i4+1] > bmax[1]));
if (!clipped) {
hist[got] = subb[i4];
hist[got+1] = subb[i4+1];
got += 2;
} else {
nclipped++;
if (nclipped > 10 * ntries) {
fprintf(stderr, "warning: too much clipping, "
"flam3_dimension giving up.\n");
return sqrt(-1.0);
}
}
i4 += 4;
}
}
if (0)
fprintf(stderr, "cliprate=%g\n", nclipped/(ntries+(double)nclipped));
for (i = 0; i < ntries; i++) {
int ri;
double dx, dy, d2;
double tx, ty;
tx = hist[2*i];
ty = hist[2*i+1];
do {
ri = 2 * (random() % ntries);
} while (ri == i);
dx = hist[ri] - tx;
dy = hist[ri+1] - ty;
d2 = dx*dx + dy*dy;
if (d2 < 0.004 * d2max) n2++;
if (d2 < 0.00004 * d2max) n1++;
}
fd = 0.434294 * log(n2 / (n1 - 0.5));
if (0)
fprintf(stderr, "n1=%d n2=%d\n", n1, n2);
free(hist);
return fd;
}
double flam3_lyapunov(flam3_genome *cp, int ntries) {
double p[4];
double x, y;
double xn, yn;
double xn2, yn2;
double dx, dy, r;
double eps = 1e-5;
int i;
double sum = 0.0;
unsigned short *xform_distrib;
int lp;
long int default_isaac_seed = (long int)time(0);
randctx rc;
/* Set up the isaac rng */
for (lp = 0; lp < RANDSIZ; lp++)
rc.randrsl[lp] = default_isaac_seed;
irandinit(&rc,1);
if (ntries < 1) ntries = 10000;
for (i = 0; i < ntries; i++) {
x = flam3_random_isaac_11(&rc);
y = flam3_random_isaac_11(&rc);
p[0] = x;
p[1] = y;
p[2] = 0.0;
p[3] = 0.0;
// get into the attractor
if (prepare_precalc_flags(cp))
return(-1.0);
xform_distrib = flam3_create_xform_distrib(cp);
if (xform_distrib==NULL)
return(-1.0);
flam3_iterate(cp, 1, 20+(random()%10), p, xform_distrib, &rc);
free(xform_distrib);
x = p[0];
y = p[1];
// take one deterministic step
srandom(i);
if (prepare_precalc_flags(cp))
return(-1.0);
xform_distrib = flam3_create_xform_distrib(cp);
if (xform_distrib==NULL)
return(-1.0);
flam3_iterate(cp, 1, 0, p, xform_distrib, &rc);
free(xform_distrib);
xn = p[0];
yn = p[1];
do {
dx = flam3_random_isaac_11(&rc);
dy = flam3_random_isaac_11(&rc);
r = sqrt(dx * dx + dy * dy);
} while (r == 0.0);
dx /= r;
dy /= r;
dx *= eps;
dy *= eps;
p[0] = x + dx;
p[1] = y + dy;
p[2] = 0.0;
// take the same step but with eps
srandom(i);
if (prepare_precalc_flags(cp))
return(-1.0);
xform_distrib = flam3_create_xform_distrib(cp);
if (xform_distrib==NULL)
return(-1.0);
flam3_iterate(cp, 1, 0, p, xform_distrib, &rc);
free(xform_distrib);
xn2 = p[0];
yn2 = p[1];
r = sqrt((xn-xn2)*(xn-xn2) + (yn-yn2)*(yn-yn2));
sum += log(r/eps);
}
return sum/(log(2.0)*ntries);
}