This sets the clip rectange, flushes any existing state and preps for
drawing.
The clip window left,top is inside, right,bottom is outside. So if the
window is 100,100 --> 200,200, then pixel 100,100 can be modified but
pixel 200,200 will not.
voidinitialise(int left, int top, int right, int bottom)
This sets the clip rectange, flushes any existing state and preps for drawing.
The clip window left,top is inside, right,bottom is outside. So if the window is 100,100 --> 200,200, then pixel 100,100 can be modified but pixel 200,200 will not.