Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 4 - Geometric Objects / Geometric Objects Reference

Geometric Objects Routines / Managing Geometric Objects

Q3Geometry_GetType

You can use the Q3Geometry_GetType function to get the type of a geometric object.

TQ3ObjectType Q3Geometry_GetType (TQ3GeometryObject geometry);

geometry

A geometric object.

DESCRIPTION

The Q3Geometry_GetType function returns, as its function result, the type of the geometric object specified by the geometry parameter. The types of geometric objects currently supported by QuickDraw 3D are defined by these constants:

kQ3GeometryTypeBox
kQ3GeometryTypeGeneralPolygon
kQ3GeometryTypeLine
kQ3GeometryTypeMarker
kQ3GeometryTypeMesh
kQ3GeometryTypeNURBCurve
kQ3GeometryTypeNURBPatch
kQ3GeometryTypePoint
kQ3GeometryTypePolygon
kQ3GeometryTypePolyLine
kQ3GeometryTypeTriangle
kQ3GeometryTypeTriGrid

If the specified geometric object is invalid or is not one of these types, Q3Geometry_GetType returns the value kQ3ObjectTypeInvalid.