About Orientation Reference for Surface Conversion in IDD
When you convert one or more free form surfaces to procedural surfaces, IDD automatically defines a default orientation for the converted surfaces. You can change the orientation reference, if required.
For a plane, IDD uses the changed orientation reference to orient the normal of the plane. If you select a linear reference such as an edge or a curve, the converted plane is oriented perpendicular to the linear reference. If you select a surface or a plane as reference, the converted plane is oriented parallel to the selected surface or plane.
For a cylinder, IDD uses the orientation reference to orient the axis of symmetry.
For a revolved surface, IDD uses the orientation reference to orient the axis of revolution.
For an extruded surface, IDD uses the orientation reference to orient the axis of extrusion.
When you convert surfaces to a revolved surface or cylinder, the Use orientation reference as axis of revolution option is available. This option allows you to use the selected orientation reference as the axis of symmetry for cylinder and axis of revolution for revolve. If you select this option and
• The orientation reference is linear then both the orientation and location of the converted surface changes according to the selected reference.
• The orientation reference type is planar then only the orientation of the converted surface changes according to the selected orientation.
By default, this option is selected.
When you change orientation reference, use the Compute option to create converted surfaces again.