Blender V2.61 - r43446

node_texture_checker.c

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00001 /*
00002  * ***** BEGIN GPL LICENSE BLOCK *****
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License
00006  * as published by the Free Software Foundation; either version 2
00007  * of the License, or (at your option) any later version. 
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software Foundation,
00016  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00017  *
00018  * The Original Code is Copyright (C) 2005 Blender Foundation.
00019  * All rights reserved.
00020  *
00021  * The Original Code is: all of this file.
00022  *
00023  * Contributor(s): Robin Allen
00024  *
00025  * ***** END GPL LICENSE BLOCK *****
00026  */
00027 
00033 #include "node_texture_util.h"
00034 #include "NOD_texture.h"
00035 #include <math.h>
00036 
00037 static bNodeSocketTemplate inputs[]= {
00038     { SOCK_RGBA, 1, "Color1", 1.0f, 0.0f, 0.0f, 1.0f },
00039     { SOCK_RGBA, 1, "Color2", 1.0f, 1.0f, 1.0f, 1.0f },
00040     { SOCK_FLOAT, 1, "Size",   0.5f, 0.0f, 0.0f, 0.0f,  0.0f, 100.0f, PROP_UNSIGNED },
00041     { -1, 0, "" }
00042 };
00043 static bNodeSocketTemplate outputs[]= {
00044     { SOCK_RGBA, 0, "Color" },
00045     { -1, 0, "" }
00046 };
00047 
00048 static void colorfn(float *out, TexParams *p, bNode *UNUSED(node), bNodeStack **in, short thread)
00049 {
00050     float x  = p->co[0];
00051     float y  = p->co[1];
00052     float z  = p->co[2];
00053     float sz = tex_input_value(in[2], p, thread);
00054     
00055     /* 0.00001  because of unit sized stuff */
00056     int xi = (int)fabs(floor(0.00001f + x / sz));
00057     int yi = (int)fabs(floor(0.00001f + y / sz));
00058     int zi = (int)fabs(floor(0.00001f + z / sz));
00059     
00060     if( (xi % 2 == yi % 2) == (zi % 2) ) {
00061         tex_input_rgba(out, in[0], p, thread);
00062     } else {
00063         tex_input_rgba(out, in[1], p, thread);
00064     } 
00065 }
00066 
00067 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
00068 {
00069     tex_output(node, in, out[0], &colorfn, data);
00070 }
00071 
00072 void register_node_type_tex_checker(bNodeTreeType *ttype)
00073 {
00074     static bNodeType ntype;
00075     
00076     node_type_base(ttype, &ntype, TEX_NODE_CHECKER, "Checker", NODE_CLASS_PATTERN, NODE_PREVIEW|NODE_OPTIONS);
00077     node_type_socket_templates(&ntype, inputs, outputs);
00078     node_type_size(&ntype, 100, 60, 150);
00079     node_type_exec(&ntype, exec);
00080     
00081     nodeRegisterType(ttype, &ntype);
00082 }