Construct from width/height and a resource.

Return buffer size in bytes for a given device size. @param w Device width in pixels. @param h Device height in pixels. @return Required backing buff

Create a stack with the given extents.

width: the width of the surrounding rectangle inner: the bounding box of the delegate stream in the surrounding rectangle

Create a surface targeting a device output. @param out Output device. @param dx X offset to apply to drawn objects. @param dy Y offset to apply to dr

Verifies ordered centerline bounds normalize to the rounded-inner case.