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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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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// Must define this structure before we include apoplugin.h
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typedef struct
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{
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int pie_slices;
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double pie_thickness;
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double pie_rotation;
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double pi2_slices;
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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("pie");
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// Define the Variables
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APO_VARIABLES(
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VAR_INTEGER_NONZERO(pie_slices, 6),
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VAR_REAL_RANGE(pie_thickness, 0.0, 1.0, 0.5),
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VAR_REAL_CYCLE(pie_rotation, 0.0, 2.0 * M_PI, 0.0)
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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(pi2_slices) = 2 * M_PI / VAR(pie_slices);
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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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int sl;
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double a, r;
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double s, c;
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sl = rand() % VAR(pie_slices); // Pick a random slice.
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// Choose a random angle in the slice.
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a = VAR(pie_rotation) + VAR(pi2_slices) * (sl + VAR(pie_thickness) * random01());
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// Choose a random distance from the centre, scaled by VVAR.
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r = VVAR * random01();
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// Convert from polar coordinates to rectangular coordinates.
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fsincos(a, &s, &c);
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FPx += r * c;
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FPy += r * s;
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return TRUE;
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}
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