75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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/*
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Apophysis Plugin
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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// Must define this structure before we include apoplugin.h
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typedef struct
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{
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double julian2_a;
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double julian2_b;
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double julian2_c;
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double julian2_d;
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double julian2_e;
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double julian2_f;
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int julian2_power;
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double julian2_dist;
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int absN;
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double cN;
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double vvar2;
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} Variables;
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#include "apoplugin.h"
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APO_PLUGIN("julian2");
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APO_VARIABLES(
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VAR_INTEGER_NONZERO(julian2_power, 2),
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VAR_REAL(julian2_dist, 1.0),
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VAR_REAL(julian2_a, 1.0),
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VAR_REAL(julian2_b, 0.0),
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VAR_REAL(julian2_c, 0.0),
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VAR_REAL(julian2_d, 1.0),
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VAR_REAL(julian2_e, 0.0),
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VAR_REAL(julian2_f, 0.0)
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);
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int PluginVarPrepare(Variation* vp)
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{
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VAR(absN) = (int)abs(VAR(julian2_power));
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VAR(cN) = VAR(julian2_dist) / VAR(julian2_power) / 2;
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return TRUE;
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}
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int PluginVarCalc(Variation* vp)
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{
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double x = VAR(julian2_a) * FTx + VAR(julian2_b) * FTy + VAR(julian2_e);
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double y = VAR(julian2_c) * FTx + VAR(julian2_d) * FTy + VAR(julian2_f);
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double sina = 0.0, cosa = 0.0;
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double angle = (atan2(y, x) + M_2PI * (rand() % (int)VAR(absN)))/ VAR(julian2_power);
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double r = VVAR * pow(sqr(x) + sqr(y), VAR(cN));
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fsincos(angle, &sina, &cosa);
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FPx += r * cosa;
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FPy += r * sina;
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return TRUE;
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}
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