Invert Implicit Geometry

Swap the "inside" and "outside" of an implicit body by reversing the sign of all scalar values in the underlying field.

An illustrative example would be to invert the field of a sphere. The result in this case would be a cube that is the size of the bounding box surrounding the sphere with a spherical cut-out inside of it. The sphere that was once solid is now a void, and the external void surrounding the original sphere is now solid. Similarly, in the example below, a Gyroid lattice has been inverted, which swaps the solid and void regions, and also places a thin padding of solid material around the lattice. This padding was previously the void between the lattice and the bounding box containing the lattice.

  1. On the Implicit Modeling ribbon, select the Invert tool.

    Tip: To find and open a tool, press Ctrl+F. For more information, see Find and Search for Tools.
  2. Optional: For Visualization Quality, select from Low to Very High quality, which corresponds to a low to very high density of elements. A higher quality produces sharper geometry features but is more computationally intensive. When creating a complicated function, it’s recommended to work using a lower quality and then switch to a higher quality after the function is complete.
  3. Select an implicit body to invert.
  4. Select a second implicit body as the mask, which determines the volume of the selected body that the inversion operates on.
  5. Click OK.