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/**
* $Id: SHD_math.c,v 1.4 2007/04/04 13:58:12 jesterking Exp $
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "../SHD_util.h"
/* **************** INVERT ******************** */
static bNodeSocketType sh_node_invert_in[]= {
{ SOCK_VALUE, 1, "Fac", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{ SOCK_RGBA, 1, "Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static bNodeSocketType sh_node_invert_out[]= {
{ SOCK_RGBA, 0, "Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static void node_shader_exec_invert(void *data, bNode *node, bNodeStack **in,
bNodeStack **out)
{
float col[3], facm;
col[0] = 1.0f - in[1]->vec[0];
col[1] = 1.0f - in[1]->vec[1];
col[2] = 1.0f - in[1]->vec[2];
/* if fac, blend result against original input */
if (in[0]->vec[0] < 1.0f) {
facm = 1.0 - in[0]->vec[0];
col[0] = in[0]->vec[0]*col[0] + (facm*in[1]->vec[0]);
col[1] = in[0]->vec[0]*col[1] + (facm*in[1]->vec[1]);
col[2] = in[0]->vec[0]*col[2] + (facm*in[1]->vec[2]);
}
VECCOPY(out[0]->vec, col);
}
bNodeType sh_node_invert= {
/* *next,*prev */ NULL, NULL,
/* type code */ SH_NODE_INVERT,
/* name */ "Invert",
/* width+range */ 90, 80, 100,
/* class+opts */ NODE_CLASS_OP_COLOR, NODE_OPTIONS,
/* input sock */ sh_node_invert_in,
/* output sock */ sh_node_invert_out,
/* storage */ "",
/* execfunc */ node_shader_exec_invert,
/* butfunc */ NULL,
/* initfunc */ NULL,
/* freestoragefunc */ NULL,
/* copystoragefunc */ NULL,
/* id */ NULL
};
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