node_texture_texture.c

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/*
 * 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.
 */
 
#include "NOD_texture.h"
#include "node_texture_util.h"
 
#include "RE_texture.h"
 
static bNodeSocketTemplate inputs[] = {
    {SOCK_RGBA, N_("Color1"), 1.0f, 1.0f, 1.0f, 1.0f},
    {SOCK_RGBA, N_("Color2"), 0.0f, 0.0f, 0.0f, 1.0f},
    {-1, ""},
};
 
static bNodeSocketTemplate outputs[] = {
    {SOCK_RGBA, N_("Color")},
    {-1, ""},
};
 
static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, short thread)
{
  Tex *nodetex = (Tex *)node->id;
  static float red[] = {1, 0, 0, 1};
  static float white[] = {1, 1, 1, 1};
  float co[3], dxt[3], dyt[3];
 
  copy_v3_v3(co, p->co);
  if (p->osatex) {
    copy_v3_v3(dxt, p->dxt);
    copy_v3_v3(dyt, p->dyt);
  }
  else {
    zero_v3(dxt);
    zero_v3(dyt);
  }
 
  if (node->custom2 || node->need_exec == 0) {
    /* this node refers to its own texture tree! */
    copy_v4_v4(out, (fabsf(co[0] - co[1]) < 0.01f) ? white : red);
  }
  else if (nodetex) {
    TexResult texres;
    int textype;
    float nor[] = {0, 0, 0};
    float col1[4], col2[4];
 
    tex_input_rgba(col1, in[0], p, thread);
    tex_input_rgba(col2, in[1], p, thread);
 
    texres.nor = nor;
    textype = multitex_nodes(nodetex, co, dxt, dyt, p->osatex, &texres, thread, 0, p->mtex, NULL);
 
    if (textype & TEX_RGB) {
      copy_v4_v4(out, &texres.tr);
    }
    else {
      copy_v4_v4(out, col1);
      ramp_blend(MA_RAMP_BLEND, out, texres.tin, col2);
    }
  }
}
 
static void exec(void *data,
                 int UNUSED(thread),
                 bNode *node,
                 bNodeExecData *execdata,
                 bNodeStack **in,
                 bNodeStack **out)
{
  tex_output(node, execdata, in, out[0], &colorfn, data);
}
 
void register_node_type_tex_texture(void)
{
  static bNodeType ntype;
 
  tex_node_type_base(&ntype, TEX_NODE_TEXTURE, "Texture", NODE_CLASS_INPUT, NODE_PREVIEW);
  node_type_socket_templates(&ntype, inputs, outputs);
  node_type_exec(&ntype, NULL, NULL, exec);
 
  nodeRegisterType(&ntype);
}