void agg_renderer<T>::process(raster_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
raster_ptr const& source=feature->get_raster();
if (source)
{
// If there's a colorizer defined, use it to color the raster in-place
raster_colorizer_ptr colorizer = sym.get_colorizer();
if (colorizer)
colorizer->colorize(source,*feature);
box2d<double> target_ext = box2d<double>(source->ext_);
prj_trans.backward(target_ext, PROJ_ENVELOPE_POINTS);
box2d<double> ext=t_.forward(target_ext);
int start_x = (int)ext.minx();
int start_y = (int)ext.miny();
int end_x = (int)ceil(ext.maxx());
int end_y = (int)ceil(ext.maxy());
int raster_width = end_x - start_x;
int raster_height = end_y - start_y;
double err_offs_x = ext.minx() - start_x;
double err_offs_y = ext.miny() - start_y;
if (raster_width > 0 && raster_height > 0)
{
double scale_factor = ext.width() / source->data_.width();
image_data_32 target_data(raster_width,raster_height);
raster target(target_ext, target_data);
reproject_raster(target, *source, prj_trans, err_offs_x, err_offs_y,
sym.get_mesh_size(),
sym.calculate_filter_factor(),
scale_factor,
sym.get_scaling());
composite(current_buffer_->data(), target.data_, sym.comp_op(), sym.get_opacity(), start_x, start_y, false, false);
}
}
}
static boost::python::tuple
getstate(const raster_symbolizer& r)
{
return boost::python::make_tuple(r.get_mode(),r.get_scaling(),r.get_opacity(),r.get_filter_factor(),r.get_mesh_size());
}
void agg_renderer<T>::process(raster_symbolizer const& sym,
Feature const& feature,
proj_transform const& prj_trans)
{
raster_ptr const& raster=feature.get_raster();
if (raster)
{
// If there's a colorizer defined, use it to color the raster in-place
raster_colorizer_ptr colorizer = sym.get_colorizer();
if (colorizer)
colorizer->colorize(raster);
box2d<double> ext=t_.forward(raster->ext_);
int start_x = (int)ext.minx();
int start_y = (int)ext.miny();
int end_x = (int)ceil(ext.maxx());
int end_y = (int)ceil(ext.maxy());
int raster_width = end_x - start_x;
int raster_height = end_y - start_y;
double err_offs_x = ext.minx() - start_x;
double err_offs_y = ext.miny() - start_y;
if ( raster_width > 0 && raster_height > 0)
{
double scale_factor = ext.width() / raster->data_.width();
image_data_32 target(raster_width,raster_height);
if (sym.get_scaling() == "bilinear8"){
scale_image_bilinear8<image_data_32>(target,raster->data_, err_offs_x, err_offs_y);
} else {
scaling_method_e scaling_method = get_scaling_method_by_name(sym.get_scaling());
scale_image_agg<image_data_32>(target,raster->data_, (scaling_method_e)scaling_method, scale_factor, err_offs_x, err_offs_y, sym.calculate_filter_factor());
}
if (sym.get_mode() == "normal"){
if (sym.get_opacity() == 1.0) {
pixmap_.set_rectangle_alpha(start_x,start_y,target);
} else {
pixmap_.set_rectangle_alpha2(target,start_x,start_y, sym.get_opacity());
}
} else if (sym.get_mode() == "grain_merge"){
pixmap_.template merge_rectangle<MergeGrain> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "grain_merge2"){
pixmap_.template merge_rectangle<MergeGrain2> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "multiply"){
pixmap_.template merge_rectangle<Multiply> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "multiply2"){
pixmap_.template merge_rectangle<Multiply2> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "divide"){
pixmap_.template merge_rectangle<Divide> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "divide2"){
pixmap_.template merge_rectangle<Divide2> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "screen"){
pixmap_.template merge_rectangle<Screen> (target,start_x,start_y, sym.get_opacity());
} else if (sym.get_mode() == "hard_light"){
pixmap_.template merge_rectangle<HardLight> (target,start_x,start_y, sym.get_opacity());
} else {
if (sym.get_opacity() == 1.0){
pixmap_.set_rectangle(start_x,start_y,target);
} else {
pixmap_.set_rectangle_alpha2(target,start_x,start_y, sym.get_opacity());
}
}
// TODO: other modes? (add,diff,sub,...)
}
}
}