56 lines
1.6 KiB
C
56 lines
1.6 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 dc_bubble_centerx;
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double dc_bubble_centery;
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double dc_bubble_scale;
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double bdcs;
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} Variables;
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#include "apoplugin.h"
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APO_PLUGIN("dc_bubble");
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APO_VARIABLES(
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VAR_REAL(dc_bubble_centerx, 0.0),
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VAR_REAL(dc_bubble_centery, 0.0),
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VAR_REAL(dc_bubble_scale, 1.0)
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);
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int PluginVarPrepare(Variation* vp)
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{
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VAR(bdcs) = 1.0 / (VAR(dc_bubble_scale) == 0.0 ? 10E-6 : VAR(dc_bubble_scale));
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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 r = (sqr(FTx) + sqr(FTy));
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double r4_1 = r / 4.0 + 1.0;
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r4_1 = VVAR / r4_1;
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FPx += FPx + r4_1 * FTx;
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FPy += FPy + r4_1 * FTy;
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FPz += FPz + VVAR * (2.0 / r4_1 - 1.0);
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TC = fmod(fabs(VAR(bdcs) * (sqr(FPx + VAR(dc_bubble_centerx)) + sqr(FPy + VAR(dc_bubble_centery)))), 1.0);
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return TRUE;
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}
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