Curvature

Use the Curvature procedural texture to analyze surface curvature in your model and parts or as opacity maps to create materials with worn edges etc.

Negative Curvature
Choose a color to display when surface curvature is going into the negative direction. The more severe the the angle, the closer to the set color the texture will be.

Zero Curvature
Choose a color to display where there is zero curvature. The closer to flat a surface is on the model, the closer color will become to the the chosen color.

Positive Curvature
Choose a color to display where the surface curvature is going into the positive direction.

Cutoff
Control the scale of the curvature. Decrease the value to have a smaller range of curvature. Increase to have a larger range of curvature.

Radius
Radius refers to the radius around each point on the surface in which curvature is estimated.

*In this example the Curvature texture is applied as an opacity map on a metal label on top of a black plastic.*

Advanced

Samples
Increase the samples to improve the quality of the gradations. Increasing this parameter also increases render time.

Radius in Pixels
If disabled the radius will be defined in the current scene unit.

Sample Same Material Only
Enable this toggle to use the curvature data from this material only.

Note

Curvature is a ray-traced texture. This means that the texture will start out coarse, but will progressively get more refined and smooth, depending on the texture settings and your machine’s performance.