Advanced Settings

Contains controls that can be used to adjust the precision of ray traced renderings.


Ray Tracing dialog box with Advanced section expanded.

Adjust Mesh

If on, curved surfaces are adjusted by a distance proportional to their radius of curvature to correct for irregular shadows.

In rare cases, curved surfaces or spheres that are partially lighted and partially in darkness may produce irregular shadows along the line separating light and dark known as the “terminator.” This can be corrected by turning Adjust Mesh on.

If off, surfaces are not adjusted for irregular shadows along the terminator.

Key-in: RAYTRACE ADJUST

Key-in: RAYTRACE SET ADJUST [ON | OFF]

Override Scale: 10

If on, sets the scale at which the design file is rendered — a floating point number from 0.0–15.0. The number represents the exponent of the scale factor used to scale the design file. For example, a value of 5.0 scales the design down by a factor of 10⁵, or 100,000. The design file is not changed.

The default value is ¹/₁₀₀₀th of the size of the design, which generally produces the optimal rendering. This number can be changed if precision problems cause unexplained missing surfaces or surface speckling to appear in the rendered image.

Key-in: RAYTRACE SET SCALEFACTOR value

Limit Memory (Mb)

If on, lets you limit the amount of memory (RAM) used in preprocessing for Ray Tracing. This can improve performance, particularly on larger models, by avoiding the necessity for the system to page out to disk during ray tracing.

Min Ray Contribution

If on, sets a limit on the number of rays that will be traced through a given pixel by specifying the minimum contribution a reflected or transmitted ray needs to have before that ray will be computed.