erase-circle-arc

Arguments: stream center radius start-angle length-angle

Erases from stream (i.e. replaces with the background color or texture) the specified circle-arc, which is the arc extending length-angle from start-angle on the circle defined by center and radius.

center should be a position (see make-position). stream should be a cg-stream.

See also draw-circle-arc.

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Created 2019.8.20.