Zebra Striping

Zebra striping is a diagnostic shading technique used in computer graphics to visualize curvature on smooth surfaces. It is primarily used for computer aided design (CAD), where it helps checking that surfaces meet smoothly. It is a simulation of the visual effect of placing an object in a tunnel lit by parallel rows of lights, or a perfectly reflecting object in a room with striped walls. It has been implemented in a number of CAD products, including (but not limited to) Maya and Rhinoceros 3D.

It can be implemented as an environment map using radiating pie wedges as the source texture.