About Inverting Curves and Surfaces

In the work area, the following vector symbols are used to display the UV and normal directions:

green: UV direction black: surface normal depending from the UV vectors red: shell normal (basis for the basic direction of the commands applied in the following on the surface)

With this command, the following invert operations can be carried out:

• Surfaces:
  • Change orientation: Change UV direction (and thus the surface normal (white)) or invert Shell normal (yellow).
  • Align normals to surface normal: The Shell normal as well as the surface normal are aligned to the surface normal of a reference.
  • Align UV: The UV directions are aligned according to a reference.
• Curves:
  • Invert direction: Invert the direction of curves.
  • Align directions: Align the direction of curves according to a reference.

The Invert command is available in two variants:

After having carried out the inversion, a Feature element Invert.X is inserted in the tree and the original elements are set to Hide mode.

The input geometry will not be modified.

For certain modes ( Align normals to surface normal, Align UV, Align directions), the input geometry must be topologically contiguous (see Gap Distance in the Invert dialog box description).

With this command, the inverted elements remain datum elements.

If the command is carried out on a datum element, the result will be applied directly on the input element.

The selected elements need not to be topologically contiguous, however, in case of carrying out the command with a selected reference, only the region containing the reference element will be considered.