70 lines
2.2 KiB
C
70 lines
2.2 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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Written by Georg Kiehne
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--> http://xyrus-worx.net, http://xyrus02.deviantart.com
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If you find any bugs / nags - keep them :)
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*/
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typedef struct {
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double dc_ztransl_x0;
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double dc_ztransl_x1;
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double dc_ztransl_factor;
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double x0_, x1_, x1_m_x0;
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int dc_ztransl_overwrite;
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int dc_ztransl_clamp;
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} Variables;
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#include "apoplugin.h"
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APO_PLUGIN("dc_ztransl");
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APO_VARIABLES(
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VAR_REAL_RANGE(dc_ztransl_x0, 0.0, 1.0, 0.0),
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VAR_REAL_RANGE(dc_ztransl_x1, 0.0, 1.0, 1.0),
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VAR_REAL(dc_ztransl_factor, 1.0),
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VAR_INTEGER_RANGE(dc_ztransl_overwrite, 0, 1, 1),
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VAR_INTEGER_RANGE(dc_ztransl_clamp, 0, 1, 0)
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);
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int PluginVarPrepare(Variation* vp)
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{
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vp->var.x0_ = vp->var.dc_ztransl_x0 < vp->var.dc_ztransl_x1 ? vp->var.dc_ztransl_x0 : vp->var.dc_ztransl_x1;
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vp->var.x1_ = vp->var.dc_ztransl_x0 > vp->var.dc_ztransl_x1 ? vp->var.dc_ztransl_x0 : vp->var.dc_ztransl_x1;
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vp->var.x1_m_x0 = vp->var.x1_ - vp->var.x0_ == 0 ? EPS : vp->var.x1_ - vp->var.x0_;
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return 1;
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}
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inline double flip(double a, double b, double c){return (c*(b-a)+a);}
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int PluginVarCalc(Variation* vp)
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{
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double zf = vp->var.dc_ztransl_factor * (*(vp->pColor) - vp->var.x0_) / vp->var.x1_m_x0;
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if (vp->var.dc_ztransl_clamp != 0)
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zf = zf < 0 ? 0 : zf > 1 ? 1 : zf;
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*(vp->pFPx) += vp->vvar*(*(vp->pFTx));
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*(vp->pFPy) += vp->vvar*(*(vp->pFTy));
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if (vp->var.dc_ztransl_overwrite == 0)
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*(vp->pFPz) += vp->vvar*(*(vp->pFTz))*zf;
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else *(vp->pFPz) += vp->vvar*zf;
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return 1;
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}
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