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

Chapter 4 - Geometric Objects / Geometric Objects Reference

Geometric Objects Routines / Creating and Editing Simple Polygons

Q3Polygon_GetVertexPosition

You can use the Q3Polygon_GetVertexPosition function to get the position of a vertex of a simple polygon.

TQ3Status Q3Polygon_GetVertexPosition (
TQ3GeometryObject polygon, 
unsigned long index, 
TQ3Point3D *point);

polygon

A simple polygon.

index

An index into the vertices array of the specified simple polygon.

point

On exit, the position of the specified vertex.

DESCRIPTION

The Q3Polygon_GetVertexPosition function returns, in the point parameter, the position of the vertex having the index specified by the index parameter in the vertices array of the simple polygon specified by the polygon parameter.