4 Data Structures

Lines

A line is a straight segment in three-dimensional space defined by its two endpoints, with an optional set of attributes. (In addition, each vertex can have a set of attributes.) A line is defined by the TQ3LineData data type. See "Creating and Editing Lines," beginning on page 4-63 for a description of the routines you can use to create and edit lines. Figure 4-10 shows a line.

Figure 4-10 A line

typedef struct TQ3LineData {
 TQ3Vertex3D         vertices[2];
 TQ3AttributeSet         lineAttributeSet;
} TQ3LineData;
vertices An array of two vertices.
lineAttributeSet
A set of attributes for the line. The value in this field is NULL if no line attributes are defined.

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

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