assert(id < (int) cache_view->number_threads);
pixels=GetVirtualPixelsFromNexus(cache_view->image,
cache_view->virtual_pixel_method,x,y,1,1,cache_view->nexus_info[id],
assert(id < (int) cache_view->number_threads);
pixels=GetVirtualPixelsFromNexus(cache_view->image,
cache_view->virtual_pixel_method,x,y,1,1,cache_view->nexus_info[id],