20 Managing Bounding Spheres
Q3BoundingSphere_SetFromPoints3D
function to find the bounding sphere that bounds an arbitrary list of three-dimensional points.
TQ3BoundingSphere *Q3BoundingSphere_SetFromPoints3D ( TQ3BoundingSphere *bSphere, const TQ3Point3D *pts, unsigned long nPts, unsigned long structSize);bSphere
A pointer to a bounding sphere.pts
A pointer to a list of three-dimensional points.nPts
The number of points in the specified list.structSize
The number of bytes of data that separate two successive points in the specified list of points.
Q3BoundingSphere_SetFromPoints3D
function returns, as its function result and in the bSphere
parameter, a pointer to a bounding sphere that contains all the points in the list of three-dimensional points specified by the pts
parameter. The nPts
parameter indicates how many points are in that list, and the structSize
parameter indicates the offset between any two successive points in the list. By suitably specifying the value of the structSize
parameter, you can have QuickDraw3D extract points that are embedded in an array of larger data structures.
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