Two settings control the number of segments that are generated, FacetDev and FacetMax:
- FacetDev is the allowable deviation of a facet from the true curve, and represents the maximum distance allowed from the midpoint of a facet, perpendicular to the true curve. Larger values will generate fewer facets. Smaller values will generate more facets. A full circle will never have less than eight segments, as seen in the image above. FacetDev must be a positive (non-zero, non-negative) value. Note: If imperial architectural units are set current, the command line will show the current value as a linear distance in those units (feet and inches), the value you enter needs to be a real number, without any feet or inchese symbols. For example, to set a value of 1'-0", type 12 and press the ENTER key.
- FacetMax sets a maximum number of facets for a single curve. For designs that feature curves with a wide range of radii, FacetMax allows setting FacetDev to a sufficiently small number to achieve a reasonable smoothness on the smaller radii without imposing a serious performance hit due to the large number of segments on the larger radii, which would look smooth with larger FacetDev value. Valid values for FacetMax are integers between 100 and 10000, inclusive.
With DISPSILH reset back to 1, the image below shows the same cylinder in the 2D Wireframe (left) and Conceptual (right) Visual Styles.
Next article in the series: ACA: Curved Mass Elements - Part 2: Shape Impact