A transformation which: - is content to let someone else decide my bounds (I do not try to minimally enclose my submorphs) - can use bi-linear interpolation
adjustAfter:
same as super, but without reference position stuff
computeBounds
the transform bounds must remain under the control of the owner in this case
drawSubmorphsOn:
Display submorphs back to front
extent:
useRegularWarpBlt:
