Window-Point Pick Data Structure

You use a window-point pick data structure to specify information when creating a pick object for subsequent window-point picking. A window-point pick data structure is defined by the TQ3WindowPointPickData data type.

typedef struct TQ3WindowPointPickData {
    TQ3PickData                         data;
    TQ3Point2D                          point;
    float                               vertexTolerance;
    float                               edgeTolerance;
} TQ3WindowPointPickData;


data

A pick data structure specifying basic information about the window-point pick object.

point

A point, in local window coordinates, where each unit equals 1/72 inch.

vertexTolerance

The vertex tolerance.

edgeTolerance

The edge tolerance.

Vertex and edge tolerances are discussed in "Hit Identification" .

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© 1997 Apple Computer, Inc.

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