77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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 Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2005 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/nodes/shader/nodes/node_shader_squeeze.c
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* \ingroup shdnodes
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*/
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#include "node_shader_util.h"
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/* **************** VALUE SQUEEZE ******************** */
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static bNodeSocketTemplate sh_node_squeeze_in[] = {
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{ SOCK_FLOAT, 1, N_("Value"), 0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
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{ SOCK_FLOAT, 1, N_("Width"), 1.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
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{ SOCK_FLOAT, 1, N_("Center"), 0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
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{ -1, 0, "" }
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};
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static bNodeSocketTemplate sh_node_squeeze_out[] = {
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{ SOCK_FLOAT, 0, N_("Value")},
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{ -1, 0, "" }
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};
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static void node_shader_exec_squeeze(void *UNUSED(data), int UNUSED(thread), bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), bNodeStack **in, bNodeStack **out)
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{
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float vec[3];
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nodestack_get_vec(vec, SOCK_FLOAT, in[0]);
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nodestack_get_vec(vec + 1, SOCK_FLOAT, in[1]);
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nodestack_get_vec(vec + 2, SOCK_FLOAT, in[2]);
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out[0]->vec[0] = 1.0f / (1.0f + powf(M_E, -((vec[0] - vec[2]) * vec[1])));
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}
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static int gpu_shader_squeeze(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
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{
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return GPU_stack_link(mat, "squeeze", in, out);
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}
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void register_node_type_sh_squeeze(void)
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{
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static bNodeType ntype;
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sh_node_type_base(&ntype, SH_NODE_SQUEEZE, "Squeeze Value", NODE_CLASS_CONVERTOR, 0);
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node_type_compatibility(&ntype, NODE_OLD_SHADING);
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node_type_socket_templates(&ntype, sh_node_squeeze_in, sh_node_squeeze_out);
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node_type_storage(&ntype, "node_squeeze", NULL, NULL);
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node_type_exec(&ntype, NULL, NULL, node_shader_exec_squeeze);
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node_type_gpu(&ntype, gpu_shader_squeeze);
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nodeRegisterType(&ntype);
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}
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