95a2f54683
git-svn-id: https://svn.code.sf.net/p/apophysis7x/svn/trunk@1 a5d1c0f9-a0e9-45c6-87dd-9d276e40c949
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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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 c1x;
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double c1y;
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double c2x;
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double c2y;
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double poincare_c1r;
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double poincare_c2r;
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double c1d; //r0 + r1
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double c2d; //r0 + r2
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double poincare_c1a;
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double poincare_c2a;
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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("poincare");
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// Define the Variables
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APO_VARIABLES(
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VAR_REAL(poincare_c1r, 1.0),
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VAR_REAL_CYCLE(poincare_c1a, -M_PI, M_PI, -1.0),
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VAR_REAL(poincare_c2r, 1.0),
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VAR_REAL_CYCLE(poincare_c2a, -M_PI, M_PI, 1.0)
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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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VAR(c1d) = sqrt( 1.0 + sqr(VAR(poincare_c1r)) );
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VAR(c2d) = sqrt( 1.0 + sqr(VAR(poincare_c2r)) );
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VAR(c1x) = VAR(c1d) * cos ( VAR(poincare_c1a));
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VAR(c1y) = VAR(c1d) * sin ( VAR(poincare_c1a));
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VAR(c2x) = VAR(c2d) * cos ( VAR(poincare_c2a));
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VAR(c2y) = VAR(c2d) * sin ( VAR(poincare_c2a));
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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, y;
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x = VAR(c1x) + ( sqr(VAR(poincare_c1r)) * ( FTx - VAR(c1x))) / ( sqr(FTx - VAR(c1x)) + sqr(FTy - VAR(c1y)) );
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y = VAR(c1y) + ( sqr(VAR(poincare_c1r)) * ( FTy - VAR(c1y))) / ( sqr(FTx - VAR(c1x)) + sqr(FTy - VAR(c1y)) );
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FPx += VAR(c2x) + ( sqr(VAR(poincare_c2r)) * ( x - VAR(c2x))) / ( sqr(x - VAR(c2x)) + sqr(y - VAR(c2y)) );
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FPy += VAR(c2y) + ( sqr(VAR(poincare_c2r)) * ( y - VAR(c2y))) / ( sqr(x - VAR(c2x)) + sqr(y - VAR(c2y)) );
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return TRUE;
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}
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