diff options
Diffstat (limited to 'source/blender/nodes/texture/nodes/node_texture_math.c')
| -rw-r--r-- | source/blender/nodes/texture/nodes/node_texture_math.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/source/blender/nodes/texture/nodes/node_texture_math.c b/source/blender/nodes/texture/nodes/node_texture_math.c new file mode 100644 index 00000000000..182bc37978f --- /dev/null +++ b/source/blender/nodes/texture/nodes/node_texture_math.c @@ -0,0 +1,201 @@ +/* + * + * ***** 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): Robin Allen + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/nodes/texture/nodes/node_texture_math.c + * \ingroup texnodes + */ + + +#include "node_texture_util.h" +#include "NOD_texture.h" + + +/* **************** SCALAR MATH ******************** */ +static bNodeSocketTemplate inputs[]= { + { SOCK_FLOAT, 1, "Value", 0.5f, 0.5f, 0.5f, 1.0f, -100.0f, 100.0f, PROP_NONE}, + { SOCK_FLOAT, 1, "Value", 0.5f, 0.5f, 0.5f, 1.0f, -100.0f, 100.0f, PROP_NONE}, + { -1, 0, "" } +}; + +static bNodeSocketTemplate outputs[]= { + { SOCK_FLOAT, 0, "Value"}, + { -1, 0, "" } +}; + +static void valuefn(float *out, TexParams *p, bNode *node, bNodeStack **in, short thread) +{ + float in0 = tex_input_value(in[0], p, thread); + float in1 = tex_input_value(in[1], p, thread); + + switch(node->custom1){ + + case 0: /* Add */ + *out= in0 + in1; + break; + case 1: /* Subtract */ + *out= in0 - in1; + break; + case 2: /* Multiply */ + *out= in0 * in1; + break; + case 3: /* Divide */ + { + if(in1==0) /* We don't want to divide by zero. */ + *out= 0.0; + else + *out= in0 / in1; + } + break; + case 4: /* Sine */ + { + *out= sin(in0); + } + break; + case 5: /* Cosine */ + { + *out= cos(in0); + } + break; + case 6: /* Tangent */ + { + *out= tan(in0); + } + break; + case 7: /* Arc-Sine */ + { + /* Can't do the impossible... */ + if( in0 <= 1 && in0 >= -1 ) + *out= asin(in0); + else + *out= 0.0; + } + break; + case 8: /* Arc-Cosine */ + { + /* Can't do the impossible... */ + if( in0 <= 1 && in0 >= -1 ) + *out= acos(in0); + else + *out= 0.0; + } + break; + case 9: /* Arc-Tangent */ + { + *out= atan(in0); + } + break; + case 10: /* Power */ + { + /* Only raise negative numbers by full integers */ + if( in0 >= 0 ) { + out[0]= pow(in0, in1); + } else { + float y_mod_1 = fmod(in1, 1); + if (y_mod_1 > 0.999f || y_mod_1 < 0.001f) { + *out = pow(in0, floor(in1 + 0.5f)); + } else { + *out = 0.0; + } + } + } + break; + case 11: /* Logarithm */ + { + /* Don't want any imaginary numbers... */ + if( in0 > 0 && in1 > 0 ) + *out= log(in0) / log(in1); + else + *out= 0.0; + } + break; + case 12: /* Minimum */ + { + if( in0 < in1 ) + *out= in0; + else + *out= in1; + } + break; + case 13: /* Maximum */ + { + if( in0 > in1 ) + *out= in0; + else + *out= in1; + } + break; + case 14: /* Round */ + { + *out= (in0<0)?(int)(in0 - 0.5f):(int)(in0 + 0.5f); + } + break; + + case 15: /* Less Than */ + { + if( in0 < in1 ) + *out= 1.0f; + else + *out= 0.0f; + } + break; + + case 16: /* Greater Than */ + { + if( in0 > in1 ) + *out= 1.0f; + else + *out= 0.0f; + } + break; + + default: + fprintf(stderr, + "%s:%d: unhandeld value in switch statement: %d\n", + __FILE__, __LINE__, node->custom1); + } +} + +static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) +{ + tex_output(node, in, out[0], &valuefn, data); +} + +void register_node_type_tex_math(ListBase *lb) +{ + static bNodeType ntype; + + node_type_base(&ntype, TEX_NODE_MATH, "Math", NODE_CLASS_CONVERTOR, NODE_OPTIONS); + node_type_socket_templates(&ntype, inputs, outputs); + node_type_size(&ntype, 120, 110, 160); + node_type_label(&ntype, node_math_label); + node_type_storage(&ntype, "node_math", NULL, NULL); + node_type_exec(&ntype, exec); + + nodeRegisterType(lb, &ntype); +} + |