source/vertexarraybuilder.cpp

   1 #include "vertexarray.h"
   2 #include "vertexarraybuilder.h"
   3
   4 namespace Msp {
   5 namespace GL {
   6
   7 VertexArrayBuilder::VertexArrayBuilder(VertexArray &a):
   8         array(a)
   9 { }
  10
  11 void VertexArrayBuilder::vertex_(const Vector4 &ver)
  12 {
  13         float *ptr = array.append();
  14         for(const unsigned char *c=array.get_format().begin(); c!=array.get_format().end(); ++c)
  15         {
  16                 unsigned sz = get_component_size(*c);
  17                 unsigned t = get_component_type(*c);
  18                 if(*c==COLOR4_UBYTE)
  19                 {
  20                         union { unsigned char c[4]; float f; } u;
  21                         u.c[0] = static_cast<unsigned char>(col.r*255);
  22                         u.c[1] = static_cast<unsigned char>(col.g*255);
  23                         u.c[2] = static_cast<unsigned char>(col.b*255);
  24                         u.c[3] = static_cast<unsigned char>(col.a*255);
  25                         *ptr++ = u.f;
  26                 }
  27                 else if(*c==NORMAL3)
  28                 {
  29                         *ptr++ = nor.x;
  30                         *ptr++ = nor.y;
  31                         *ptr++ = nor.z;
  32                 }
  33                 else if(t==get_component_type(COLOR4_FLOAT))
  34                 {
  35                         *ptr++ = col.r;
  36                         *ptr++ = col.g;
  37                         *ptr++ = col.b;
  38                         if(sz>=4) *ptr++ = col.a;
  39                 }
  40                 else
  41                 {
  42                         const Vector4 *v = 0;
  43                         if(t==get_component_type(VERTEX3))
  44                                 v = &ver;
  45                         else if(*c>=TEXCOORD1 && *c<=TEXCOORD4+12)
  46                                 v = &texc[t-get_component_type(TEXCOORD1)];
  47                         else if(*c>=ATTRIB1)
  48                                 v = &attr[t-get_component_type(ATTRIB1)];
  49                         else
  50                                 v = &attr[t];
  51                         *ptr++ = v->x;
  52                         if(sz>=2) *ptr++ = v->y;
  53                         if(sz>=3) *ptr++ = v->z;
  54                         if(sz>=4) *ptr++ = v->w;
  55                 }
  56         }
  57 }
  58
  59 } // namespace GL
  60 } // namespace Msp