3D Graphics Programming with QuickDraw 3D 1.5.4
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3D Graphics Programming with QuickDraw 3D 1.5.4
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This section describes the data structures that define the QuickDraw 3D geometric objects. QuickDraw 3D defines the following primitive objects:
Each of these QuickDraw 3D geometric objects has a set of attributes associated with it. The set of attributes specifies information about the appearance of the objects (for example, its color and transparency). You can edit an object's attributes by calling the functions Q3Geometry_GetAttributeSet and Q3Geometry_SetAttributeSet .
Don't confuse a QuickDraw 3D geometric object (which contains attribute information) with some corresponding standard geometric object (which doesn't contain attribute information). For example, the TQ3Point3D data type defines the standard three-dimensional Cartesian point. The associated QuickDraw 3D geometric object is defined by the TQ3PointData data type. For simplicity, the QuickDraw 3D types are usually referred to by their usual geometric names. When it is necessary to distinguish QuickDraw 3D types from standard mathematical types, the QuickDraw 3D type will be referred to as an object . For example, the TQ3Point3D data type defines a point and the TQ3PointData data type defines a point object.
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