There are two types of lighting effects: Paneled and Gouraud. Right-click in the Lighting Effect column of the Effects page to choose either Paneled or Gouraud shading for the selected zone(s).
• Paneled - Within each cell, the color assigned to each area by shading or contour flooding is tinted by a shade constant across the cell. This shade is based on the orientation of the cell relative to your 3D light source.
• Gouraud - This plot type offers smoother, more continuous shading than Paneled shading, but it also results in slower plotting and larger print files. Gouraud shading is not continuous across zone boundaries unless face neighbors are specified in the data. Gouraud shading is not available for finite element volume zones when blanking is active; the zone's lighting effect reverts to Paneled shading in this case.
If IJK-ordered data with Surfaces to Plot is set to Exposed Cell Faces, faces exposed by blanking will revert to Paneled shading.
Figure 13-2 shows two shade plots. The one on the left uses a Paneled lighting effect and the one on the right uses a Gouraud lighting effect.
Figure 13-2. A comparison of the paneled (left) and Gouraud (right) lighting effects.