80 lines
2.0 KiB
C
80 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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int hypertile_p, hypertile_q, hypertile_n;
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double re, im;
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} Variables;
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#define _USE_MATH_DEFINES
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#include "apoplugin.h"
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// Set the name of this plugin
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APO_PLUGIN("hypertile");
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// Define the Variables
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APO_VARIABLES(
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VAR_INTEGER_RANGE(hypertile_p, 3, 0x7fffffff, 3),
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VAR_INTEGER_RANGE(hypertile_q, 3, 0x7fffffff, 7),
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VAR_INTEGER(hypertile_n, 0),
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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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double pa = 2*M_PI / VAR(hypertile_p),
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qa = 2*M_PI / VAR(hypertile_q);
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double r = (1 - cos(pa)) / (cos(pa) + cos(qa)) + 1;
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if (r > 0)
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r = 1 / sqrt(r);
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else
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r = 1;
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double a = VAR(hypertile_n) * pa;
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VAR(re) = r * cos(a);
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VAR(im) = r * sin(a);
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// Always return TRUE.
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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 a = FTx + VAR(re),
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b = FTy - VAR(im);
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double c = VAR(re)*FTx - VAR(im)*FTy + 1,
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d = VAR(re)*FTy + VAR(im)*FTx;
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double vr = VVAR / (sqr(c) + sqr(d));
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FPx += vr * (a*c + b*d);
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FPy += vr * (b*c - a*d);
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return TRUE;
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}
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