void nuke_ld_3de4_base::_request(int x,int y,int r,int t,DD::Image::ChannelMask channels,int count)
{
// Since for image processing we *fetch* at pixel positions,
// the inverse mapping is used (as often mentioned).
DD::Image::Box box = bounds(_knob_direction == distort ? undistort : distort,x,y,r,t);
// The original Weta-Node forms an intersection with input0's box,
// makes sense, we do the same here. I guess, we shouldn't demand,
// what input0 does not supply, that's why.
box.intersect(input0().info());
input0().request(box.x(),box.y(),box.r(),box.t(),channels,count);
}
Imath::Box2i convert( const DD::Image::Box &from )
{
return Imath::Box2i( Imath::V2i( from.x(), from.y() ), Imath::V2i( from.r(), from.t() ) );
}