Pov4Grasp Homepage - vertexcolor pattern texture

	vertexcolor pattern texture
Features > Vertexcolor [ site map ]

This example shows a comparison with the TRIMAP.ZIP macro (for POV-Ray 3.1) from Chris Colefax's POV-Ray Include Files Page^web and the vertexcolor implementation in Pov4Grasp. The TRIMAP macro is not limited to color interpolation, but it requires more memory in this case. Comparison benchmarks are available on the grasp_surface example page with meshes including thousands of triangles.

Using Chris Colefax's TRIMAP.MCR

trimap.pov scene.inc

#version 3.1;
#include "scene.inc"
#include "trimap.mcr"  // macro by Chris Colefax

#declare F = finish{ diffuse 1  ambient 0  brilliance 0 }
#declare triangle_base_texture = texture{ finish{F} }

mesh
{
  cv_triangle(<0,-1,20>, Red,
              <3,5,20>,  Green,
              <6,-1,20>, Blue)
  cv_triangle(<-1,0,20>,  Yellow,
              <-4,-5,20>, rgbt<1,0,1,0.5>,
              <-6,2,20>,  Yellow)
}

Using vertexcolor pattern texture

vertexcolor.p4g scene.inc

#version 3.1;
#include "scene.inc"

#macro VCT(P1,C1, P2,C2, P3,C3)
  #local T = texture{
    pigment{ vertexcolor C1,C2,C3 }
    finish{ diffuse 1  ambient 0  brilliance 0 }
  }
  triangle{ P1,P2,P3 texture{T} }
#end

mesh
{
  VCT(<0,-1,20>, Red,
      <3,5,20>,  Green,
      <6,-1,20>, Blue)
  VCT(<-1,0,20>,  Yellow,
      <-4,-5,20>, rgbt<1,0,1,0.5>,
      <-6,2,20>,  Yellow)
}

Page last updated: Jun 20, 2002
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