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/**
* $Id$
*
* ***** 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"
/* **************** VALUE SQUEEZE ******************** */
static bNodeSocketType sh_node_squeeze_in[]= {
{ SOCK_VALUE, 1, "Value", 0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f},
{ SOCK_VALUE, 1, "Width", 1.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f},
{ SOCK_VALUE, 1, "Center", 0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f},
{ -1, 0, "" }
};
static bNodeSocketType sh_node_squeeze_out[]= {
{ SOCK_VALUE, 0, "Value", 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static void node_shader_exec_squeeze(void *data, bNode *node, bNodeStack **in,
bNodeStack **out)
{
float vec[3];
nodestack_get_vec(vec, SOCK_VALUE, in[0]);
nodestack_get_vec(vec+1, SOCK_VALUE, in[1]);
nodestack_get_vec(vec+2, SOCK_VALUE, in[2]);
out[0]->vec[0] = 1.0f / (1.0f + pow(2.71828183,-((vec[0]-vec[2])*vec[1]))) ;
}
static int gpu_shader_squeeze(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "squeeze", in, out);
}
bNodeType sh_node_squeeze= {
/* *next,*prev */ NULL, NULL,
/* type code */ SH_NODE_SQUEEZE,
/* name */ "Squeeze Value",
/* width+range */ 120, 110, 160,
/* class+opts */ NODE_CLASS_CONVERTOR, NODE_OPTIONS,
/* input sock */ sh_node_squeeze_in,
/* output sock */ sh_node_squeeze_out,
/* storage */ "node_squeeze",
/* execfunc */ node_shader_exec_squeeze,
/* butfunc */ NULL,
/* initfunc */ NULL,
/* freestoragefunc */ NULL,
/* copystoragefunc */ NULL,
/* id */ NULL, NULL, NULL,
/* gpufunc */ gpu_shader_squeeze
};
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