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/*
* ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 *****
*/
/** \file blender/nodes/shader/nodes/node_shader_vectMath.c
* \ingroup shdnodes
*/
#include "node_shader_util.h"
/* **************** VECTOR MATH ******************** */
static bNodeSocketTemplate sh_node_vect_math_in[]= {
{ SOCK_VECTOR, 1, "Vector", 0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 1.0f, PROP_NONE},
{ SOCK_VECTOR, 1, "Vector", 0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 1.0f, PROP_NONE},
{ -1, 0, "" }
};
static bNodeSocketTemplate sh_node_vect_math_out[]= {
{ SOCK_VECTOR, 0, "Vector"},
{ SOCK_FLOAT, 0, "Value"},
{ -1, 0, "" }
};
static void node_shader_exec_vect_math(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
float vec1[3], vec2[3];
nodestack_get_vec(vec1, SOCK_VECTOR, in[0]);
nodestack_get_vec(vec2, SOCK_VECTOR, in[1]);
if(node->custom1 == 0) { /* Add */
out[0]->vec[0]= vec1[0] + vec2[0];
out[0]->vec[1]= vec1[1] + vec2[1];
out[0]->vec[2]= vec1[2] + vec2[2];
out[1]->vec[0]= (fabs(out[0]->vec[0]) + fabs(out[0]->vec[0]) + fabs(out[0]->vec[0])) / 3;
}
else if(node->custom1 == 1) { /* Subtract */
out[0]->vec[0]= vec1[0] - vec2[0];
out[0]->vec[1]= vec1[1] - vec2[1];
out[0]->vec[2]= vec1[2] - vec2[2];
out[1]->vec[0]= (fabs(out[0]->vec[0]) + fabs(out[0]->vec[0]) + fabs(out[0]->vec[0])) / 3;
}
else if(node->custom1 == 2) { /* Average */
out[0]->vec[0]= vec1[0] + vec2[0];
out[0]->vec[1]= vec1[1] + vec2[1];
out[0]->vec[2]= vec1[2] + vec2[2];
out[1]->vec[0] = normalize_v3( out[0]->vec );
}
else if(node->custom1 == 3) { /* Dot product */
out[1]->vec[0]= (vec1[0] * vec2[0]) + (vec1[1] * vec2[1]) + (vec1[2] * vec2[2]);
}
else if(node->custom1 == 4) { /* Cross product */
out[0]->vec[0]= (vec1[1] * vec2[2]) - (vec1[2] * vec2[1]);
out[0]->vec[1]= (vec1[2] * vec2[0]) - (vec1[0] * vec2[2]);
out[0]->vec[2]= (vec1[0] * vec2[1]) - (vec1[1] * vec2[0]);
out[1]->vec[0] = normalize_v3( out[0]->vec );
}
else if(node->custom1 == 5) { /* Normalize */
if(in[0]->hasinput || !in[1]->hasinput) { /* This one only takes one input, so we've got to choose. */
out[0]->vec[0]= vec1[0];
out[0]->vec[1]= vec1[1];
out[0]->vec[2]= vec1[2];
}
else {
out[0]->vec[0]= vec2[0];
out[0]->vec[1]= vec2[1];
out[0]->vec[2]= vec2[2];
}
out[1]->vec[0] = normalize_v3( out[0]->vec );
}
}
static int gpu_shader_vect_math(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
static const char *names[] = {"vec_math_add", "vec_math_sub",
"vec_math_average", "vec_math_dot", "vec_math_cross",
"vec_math_normalize"};
switch (node->custom1) {
case 0:
case 1:
case 2:
case 3:
case 4:
GPU_stack_link(mat, names[node->custom1], NULL, out,
GPU_socket(&in[0]), GPU_socket(&in[1]));
break;
case 5:
if(in[0].hasinput || !in[1].hasinput)
GPU_stack_link(mat, names[node->custom1], NULL, out, GPU_socket(&in[0]));
else
GPU_stack_link(mat, names[node->custom1], NULL, out, GPU_socket(&in[1]));
break;
default:
return 0;
}
return 1;
}
void register_node_type_sh_vect_math(ListBase *lb)
{
static bNodeType ntype;
node_type_base(&ntype, SH_NODE_VECT_MATH, "Vector Math", NODE_CLASS_CONVERTOR, NODE_OPTIONS);
node_type_compatibility(&ntype, NODE_OLD_SHADING|NODE_NEW_SHADING);
node_type_socket_templates(&ntype, sh_node_vect_math_in, sh_node_vect_math_out);
node_type_size(&ntype, 80, 75, 140);
node_type_label(&ntype, node_vect_math_label);
node_type_storage(&ntype, "node_vect_math", NULL, NULL);
node_type_exec(&ntype, node_shader_exec_vect_math);
node_type_gpu(&ntype, gpu_shader_vect_math);
nodeRegisterType(lb, &ntype);
}
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