apophysis7x/Plugin/sinusgrid.c

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/*
Apophysis Plugin
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
typedef struct
{
double sinusgrid_ampx;
double sinusgrid_ampy;
double sinusgrid_freqx;
double sinusgrid_freqy;
double fx, fy, ax, ay;
} Variables;
#include "apoplugin.h"
APO_PLUGIN("sinusgrid");
APO_VARIABLES(
//VAR_REAL_CYCLE(sinusgrid_ampx, 0.0, 1.0, 0.5),
//VAR_REAL_CYCLE(sinusgrid_ampy, 0.0, 1.0, 0.5),
VAR_REAL(sinusgrid_ampx, 0.5),
VAR_REAL(sinusgrid_ampy, 0.5),
VAR_REAL(sinusgrid_freqx, 1.0),
VAR_REAL(sinusgrid_freqy, 1.0)
);
int PluginVarPrepare(Variation* vp)
{
VAR(ax) = VAR(sinusgrid_ampx);
VAR(ay) = VAR(sinusgrid_ampy);
VAR(fx) = VAR(sinusgrid_freqx) * M_2PI;
VAR(fy) = VAR(sinusgrid_freqy) * M_2PI;
if (VAR(fx) == 0.0) VAR(fx) = EPS;
if (VAR(fy) == 0.0) VAR(fy) = EPS;
return TRUE;
}
inline double lerp(double a, double b, double p) { return a + p * (b-a); }
int PluginVarCalc(Variation* vp)
{
double x = FTx, y = FTy;
double sx = -1.0 * cos(x * VAR(fx));
double sy = -1.0 * cos(y * VAR(fy));
double tx = lerp(FTx, sx, VAR(ax)), ty = lerp(FTy, sy, VAR(ay)), tz = FTz;
FPx += VVAR * tx;
FPy += VVAR * ty;
FPz += VVAR * tz;
return TRUE;
}