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In K-3D, the surface appearance of geometry is controlled by a Material node. There are several types of material nodes in K-3D, for each of the different Render Models, including OpenGLMaterial, RenderManMaterial, and YafrayMaterial.

Each geometric primitive in K-3D has a single material node assigned to it. Geometric primitives include:

  • Conics (Cone, Cylinder, Disk, Hyperboloid, Paraboloid, Sphere, Torus)
  • Points
  • Polygons
  • Curves (Linear, Cubic, and NURBS)
  • Patches (Bilinear, Bicubic, and NURBS)
  • Blobbies

To make it easy to render the same scene using different render engines, the special MultiMaterial node can link to any or all of the other material node types.

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