118 lines
2.2 KiB
C
118 lines
2.2 KiB
C
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/*
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Apophysis Plugin
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Copyright (C) 2007-2008 Michael Faber
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Copyright (C) 2007-2008 Joel Faber
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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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#define APO_NOVARIABLES
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#include "apoplugin.h"
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// Set the name of this plugin
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APO_PLUGIN("dc_gridout");
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inline double rint(double x)
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{
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int temp; temp = (x >= 0. ? (int)(x + 0.5) : (int)(x - 0.5));
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return (double)temp;
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}
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// You must call the argument "vp".
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int PluginVarPrepare(Variation* vp)
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{
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return TRUE; // Always return TRUE.
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}
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// You must call the argument "vp".
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int PluginVarCalc(Variation* vp)
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{
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double x = rint(FTx);
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double y = rint(FTy);
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double c = TC;
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if (y <= 0.0)
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{
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if (x > 0.0)
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{
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if (-y >= x)
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{
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FPx += VVAR * (FTx + 1.0);
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FPy += VVAR * FTy;
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c += 0.25;
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}
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else
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{
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FPx += VVAR * FTx;
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FPy += VVAR * (FTy + 1.0);
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c += 0.75;
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}
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}
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else
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{
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if (y <= x)
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{
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FPx += VVAR * (FTx + 1.0);
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FPy += VVAR * FTy;
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c += 0.25;
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}
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else
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{
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FPx += VVAR * FTx;
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FPy += VVAR * (FTy - 1.0);
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c += 0.75;
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}
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}
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}
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else
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{
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if (x > 0.0)
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{
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if (y >= x)
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{
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FPx += VVAR * (FTx - 1.0);
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FPy += VVAR * FTy;
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c += 0.25;
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}
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else
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{
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FPx += VVAR * FTx;
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FPy += VVAR * (FTy + 1.0);
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c += 0.75;
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}
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}
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else
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{
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if (y > -x)
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{
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FPx += VVAR * (FTx - 1.0);
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FPy += VVAR * FTy;
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c += 0.25;
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}
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else
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{
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FPx += VVAR * FTx;
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FPy += VVAR * (FTy - 1.0);
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c += 0.75;
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}
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}
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}
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TC = fmod(c, 1.0);
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return TRUE;
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}
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