Reduce surface texture distortion

Surface textures are mapped to a surface’s parametric space. That is, the XY values of the texture are mapped to the UV parameters of the surface. If the surface’s UV parameterization is non-uniform (that is, the U and V isoparametric curves are not uniformly spaced), then the texture appears distorted. This often occurs when mapping a surface texture to a curved surface. The greater the surface curvature, the less uniform the parameterization, and the greater the texture distortion.

If a surface texture appears distorted on a surface, do one of the following:

• Make sure that your surface is evenly parameterized. You can use Surface Edit > Rebuild Surface to re-create it with uniform parameterization.

  See Chord Length in Render > Multi-lister.

• Use chord length mapping by setting Chord LengthON.

  See Projection Texture Parameters in Render > Multi-lister.

• Use the surface texture as a source texture for a Projection solid texture.
• Turn off U and V wrap if you don’t need them (this applies to any texture placement with Ucoverage or Vcoverage less than 1.0).