60 lines
1.5 KiB
C
60 lines
1.5 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 vvar_pi;
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double psphere_zscale;
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} Variables;
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#define _USE_MATH_DEFINES
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#include "apoplugin.h"
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APO_PLUGIN("psphere");
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APO_VARIABLES(
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VAR_REAL(psphere_zscale, 0)
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);
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int PluginVarPrepare(Variation* vp)
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{
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VAR(vvar_pi) = VVAR * M_PI;
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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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double c0 = FTx * VAR(vvar_pi);
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double c1 = FTy * VAR(vvar_pi);
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double c2 = FTz * VAR(vvar_pi);
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double sinc0, cosc0, sinc1, cosc1;
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fsincos(c0, &sinc0, &cosc0);
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fsincos(c1, &sinc1, &cosc1);
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double x = cosc0 * -sinc1;
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double y = sinc0 * cosc1;
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double z = cosc1 * VAR(psphere_zscale);
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FPx += x;
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FPy += y;
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FPz += z;
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return TRUE;
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}
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