QuickTime 4 Reference

Hit-Testing a Path

You can use the vector codec function CurveGetNearestPathPoint to determine how close a point is to a path. This is useful for hit-testing: you specify a point in a human-interface that a user has clicked, and function returns how far it is from the path. The CurveGetNearestPathPoint function is described in "CurveGetNearestPathPoint" .