draw-by

Arguments: stream offset

Draws on stream a line from the current position to the position offset away from current position. offset should be a position (see make-position). stream should be a graphical-stream.

Contrast with draw-to and draw-to-x-y which draw from the current position to the argument location.

To use individual coordinates rather than creating position objects, see draw-by-x-y.

See also cg-drawing.htm.

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Created 2015.5.21.