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warp - initialise target with nodata if available

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This commit is contained in:
artemp 2014-12-17 14:54:54 +01:00
parent 137bd0ba3b
commit 160e9bb9b5
1 changed files with 2 additions and 0 deletions
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2
include/mapnik/renderer_common/process_raster_symbolizer.hpp
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@ -138,6 +138,7 @@ struct image_data_warp_dispatcher : util::static_visitor<void>
void operator() (image_data_rgba8 const& data_in) const
{
image_data_rgba8 data_out(width_, height_);
if (nodata_) data_out.set(*nodata_);
warp_image(data_out, data_in, prj_trans_, target_ext_, source_ext_, offset_x_, offset_y_, mesh_size_, scaling_method_, filter_factor_);
composite_(data_out, comp_op_, opacity_, start_x_, start_y_);
}
@ -147,6 +148,7 @@ struct image_data_warp_dispatcher : util::static_visitor<void>
{
using image_data_type = T;
image_data_type data_out(width_, height_);
if (nodata_) data_out.set(*nodata_);
warp_image(data_out, data_in, prj_trans_, target_ext_, source_ext_, offset_x_, offset_y_, mesh_size_, scaling_method_, filter_factor_);
image_data_rgba8 dst(width_, height_);
raster_colorizer_ptr colorizer = get<raster_colorizer_ptr>(sym_, keys::colorizer);