Method Cairo.Matrix()->rotate()

Method rotate

void rotate(float radians)

Description

Applies rotation by radians to the transformation. The effect of the new transformation is to first rotate the coordinates by radians, then apply the original transformation to the coordinates.

Parameter radians

angle of rotation, in radians. The direction of rotation is defined such that positive angles rotate in the direction from the positive X axis toward the positive Y axis. With the default axis orientation of cairo, positive angles rotate in a clockwise direction.