4 Q3Mesh_GetOrientable

You can use the Q3Mesh_GetOrientable function to determine whether the faces of a mesh can be consistently oriented.

TQ3Status Q3Mesh_GetOrientable (
TQ3GeometryObject mesh, 
TQ3Boolean *orientable);
mesh A mesh.
orientable On exit, a Boolean value that indicates whether the faces of the specified mesh can be consistently oriented.

DESCRIPTION


The Q3Mesh_GetOrientable function returns, in the orientable parameter, the value kQ3True if the faces of the mesh specified by the mesh parameter can be consistently oriented; Q3Mesh_GetOrientable returns kQ3False otherwise. For example, the faces of a tessellated Möbius strip or a Klein bottle cannot be consistently oriented.

SPECIAL CONSIDERATIONS


The Q3Mesh_GetOrientable function might not accurately report the orientation state of a mesh if called while mesh updating is delayed (that is, after a call to Q3Mesh_DelayUpdates but before the matching call to Q3Mesh_ResumeUpdates).

DESCRIPTION
SPECIAL CONSIDERATIONS

3D Graphics Programming with QuickDraw 3D - 21 OCT 1995

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