PaintBrush.Rotate (gb.qt4)
Sub Rotate ( Angle As Float )
Modifies the brush transformation matrix by rotating the brush-space axes by angle radians. The rotation of the axes takes places after any existing transformation of user space. The rotation direction for positive angles is from the positive X axis toward the positive Y axis.
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Angle : angle (in radians) by which the brush-space axes will be rotated.