Curved Window window treatments

Curved Window window treatments

If curved window coverings are desired, a radius of curvature may be given with the +/-r option. If given as +r, The curvature is upward (which is the usual configuration). If the option is given as -r, then the curvature is downward. The radius indicates how far from each slat its effective cylindrical center resides. Each slat will be broken into as many polygons as is necessary to keep the delta changes in angle less than 10 degrees. (Note that this may result in a rather large number of polygons.)

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