66 lines
1.7 KiB
C
66 lines
1.7 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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typedef struct
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{
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double bcbw;
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double bcircle_scale;
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double bcircle_borderwidth;
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} Variables;
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#include "apoplugin.h"
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APO_PLUGIN("bcircle");
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APO_VARIABLES(
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VAR_REAL(bcircle_scale, 1.0),
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VAR_REAL(bcircle_borderwidth, 0.0)
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);
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int PluginVarPrepare(Variation* vp)
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{
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VAR(bcbw) = fabs(VAR(bcircle_borderwidth));
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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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if ((FTx == 0) && (FTy == 0)) {
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return TRUE;
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}
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double x = FTx * VAR(bcircle_scale);
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double y = FTy * VAR(bcircle_scale);
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double r = sqrt(x * x + y * y);
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if (r <= 1) {
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FPx += VVAR * x;
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FPy += VVAR * y;
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} else {
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if (VAR(bcbw) != 0) {
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double ang = atan2(y, x);
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double omega = (0.2 * VAR(bcbw) * random01()) + 1;
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double px = omega * cos(ang);
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double py = omega * sin(ang);
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FPx += VVAR * px;
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FPy += VVAR * py;
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}
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}
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return TRUE;
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}
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