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M3calcProjF
Calculates an object’s projection on a camera and if the object is visible, returns the screen x and y coordinates, the z distance and the apparent radius r.
All values are returned as floating-point values.
Returns nil if the object is not visible or if an error occurs. The visibility calculation takes only the z (front & back) clipping into account. It disregards lateral clipping.
This function applies only to meshes.

[I I F F] M3calcProjF (
S3d _session_
H3d _camera_
H3d _object_
)
Parameters

_session_
3D Session
_camera_
Camera
_object_
3D object
Return value

Screen X and Y coordinates, Z distance and apparent radius R