Checks whether the viewport will plot vector output based on the viewport's current shade plot settings.

true if at least one of the following conditions is true:

• Render mode is kWireframe or k2DOptimized.
• Visual style type is k2DWireframe or k3DWireframe.
• Visual style has an OdGiFaceStyle::kInvisible lighting model for faces and an OdGiEdgeStyle::kIsolines edge model for edges.