void resample_pixels(const SrcView& src_view, const DstView& dst_view, const MapFn& dst_to_src, Sampler sampler=Sampler()) {
typename DstView::point_t dst_dims=dst_view.dimensions();
typename DstView::point_t dst_p;
//typename mapping_traits<MapFn>::result_type src_p;
for (dst_p.y=0; dst_p.y<dst_dims.y; ++dst_p.y) {
typename DstView::x_iterator xit = dst_view.row_begin(dst_p.y);
for (dst_p.x=0; dst_p.x<dst_dims.x; ++dst_p.x) {
sample(sampler, src_view, transform(dst_to_src, dst_p), xit[dst_p.x]);
}
}
}
inline void view_multiplies_scalar(const SrcView& src,const Scalar& scalar,const DstView& dst) {
BOOST_ASSERT(src.dimensions() == dst.dimensions());
using PIXEL_SRC_REF = typename pixel_proxy<typename SrcView::value_type>::type;
using PIXEL_DST_REF = typename pixel_proxy<typename DstView::value_type>::type;
int height=src.height();
for(int rr=0;rr<height;++rr) {
typename SrcView::x_iterator it_src=src.row_begin(rr);
typename DstView::x_iterator it_dst=dst.row_begin(rr);
typename SrcView::x_iterator it_src_end=src.row_end(rr);
while(it_src!=it_src_end) {
pixel_assigns_t<PixelAccum,PIXEL_DST_REF>()(
pixel_multiplies_scalar_t<PIXEL_SRC_REF,Scalar,PixelAccum>()(*it_src,scalar),
*it_dst);
++it_src; ++it_dst;
}
}
}