mirror of
https://github.com/scottdraves/flam3.git
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155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
/*
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FLAM3 - cosmic recursive fractal flames
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Copyright (C) 1992-2009 Spotworks LLC
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef private_included
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#define private_included
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#include "flam3.h"
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#include "config.h"
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#include <stdlib.h>
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#include <ctype.h>
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#include <time.h>
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#include <string.h>
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#include <libxml/parser.h>
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#ifdef _WIN32
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#define basename(x) strdup(x)
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#define snprintf _snprintf
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#define _USE_MATH_DEFINES
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#else
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#include <unistd.h>
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#include <libgen.h>
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#endif
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#include <math.h>
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#ifdef HAVE_LIBPTHREAD
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#include <pthread.h>
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#endif
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#define PREFILTER_WHITE 255
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#define EPS (1e-10)
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#define CMAP_SIZE 256
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#define CMAP_SIZE_M1 255
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#define rbit() (flam3_random_bit())
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#define flam3_variation_none (-1)
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#define max_specified_vars (100)
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#define vlen(x) (sizeof(x)/sizeof(*x))
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#ifdef _WIN32
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#ifndef M_PI
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#define M_PI 3.1415926536
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#define M_1_PI 0.3183098862
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#define M_PI_4 0.7853981634
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#endif
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#define random() (rand() ^ (rand()<<15))
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#define srandom(x) (srand(x))
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extern int getpid();
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#define rint(A) floor((A)+(((A) < 0)? -0.5 : 0.5))
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#endif
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#define argi(s,d) ((ai = getenv(s)) ? atoi(ai) : (d))
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#define argf(s,d) ((ai = getenv(s)) ? atof(ai) : (d))
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#define args(s,d) ((ai = getenv(s)) ? ai : (d))
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void docstring();
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/* Structures for passing parameters to iteration threads */
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typedef struct {
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unsigned short *xform_distrib; /* Distribution of xforms based on weights */
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flam3_frame *spec; /* Frame contains timing information */
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double bounds[4]; /* Corner coords of viewable area */
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double rot[2][2]; /* Rotation transformation */
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double size[2];
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int width, height; /* buffer width/height */
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double ws0, wb0s0, hs1, hb1s1; /* shortcuts for indexing */
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flam3_palette_entry *dmap; /* palette */
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double color_scalar; /* <1.0 if non-uniform motion blur is set */
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void *buckets; /* Points to the first accumulator */
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double badvals; /* accumulates all badvalue resets */
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double batch_size;
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int temporal_sample_num,ntemporal_samples;
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int batch_num, nbatches, aborted, cmap_size;
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time_t *progress_timer;
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time_t *progress_timer_history;
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double *progress_history;
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int *progress_history_mark;
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#ifdef HAVE_LIBPTHREAD
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/* mutex for bucket accumulator */
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pthread_mutex_t bucket_mutex;
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#endif
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} flam3_iter_constants;
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typedef struct {
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double tx,ty; /* Starting coordinates */
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double precalc_atan, precalc_sina; /* Precalculated, if needed */
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double precalc_cosa, precalc_sqrt;
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double precalc_sumsq,precalc_atanyx;
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flam3_xform *xform; /* For the important values */
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/* Output Coords */
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double p0, p1;
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/* Pointer to the isaac RNG state */
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randctx *rc;
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} flam3_iter_helper;
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typedef struct {
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double *iter_storage; /* Storage for iteration coordinates */
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randctx rc; /* Thread-unique ISAAC seed */
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flam3_genome cp; /* Full copy of genome for use by the thread */
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int first_thread;
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int timer_initialize;
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flam3_iter_constants *fic; /* Constants for render */
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} flam3_thread_helper;
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double flam3_sinc(double x);
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#define flam3_num_spatialfilters 14
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double flam3_gaussian_filter(double x);
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double flam3_hermite_filter(double t);
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double flam3_box_filter(double t);
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double flam3_triangle_filter(double t);
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double flam3_bell_filter(double t);
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double flam3_b_spline_filter(double t);
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double flam3_lanczos3_filter(double t);
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double flam3_lanczos2_filter(double t);
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double flam3_mitchell_filter(double t);
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double flam3_blackman_filter(double x);
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double flam3_catrom_filter(double x);
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double flam3_hamming_filter(double x);
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double flam3_hanning_filter(double x);
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double flam3_quadratic_filter(double x);
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double flam3_spatial_filter(int knum, double x);
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#define flam3_mitchell_b (1.0 / 3.0)
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#define flam3_mitchell_c (1.0 / 3.0)
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#endif
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