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fix intersecting extents in different projections

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This commit is contained in:
Jiri Drbalek 2016-09-27 20:23:45 +00:00
parent a0a5085917
commit 0f3eecbe5e
1 changed files with 3 additions and 2 deletions
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5
include/mapnik/feature_style_processor_impl.hpp
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@ -266,6 +266,7 @@ void feature_style_processor<Processor>::prepare_layer(layer_rendering_material
} }
box2d<double> layer_ext = lay.envelope(); box2d<double> layer_ext = lay.envelope();
const box2d<double> buffered_query_ext_map_srs = buffered_query_ext;
bool fw_success = false; bool fw_success = false;
bool early_return = false; bool early_return = false;
@ -281,9 +282,9 @@ void feature_style_processor<Processor>::prepare_layer(layer_rendering_material
early_return = true; early_return = true;
} }
// next try intersection of layer extent back projected into map srs // next try intersection of layer extent back projected into map srs
else if (prj_trans.backward(layer_ext, PROJ_ENVELOPE_POINTS) && buffered_query_ext.intersects(layer_ext)) else if (prj_trans.backward(layer_ext, PROJ_ENVELOPE_POINTS) && buffered_query_ext_map_srs.intersects(layer_ext))
{ {
layer_ext.clip(buffered_query_ext); layer_ext.clip(buffered_query_ext_map_srs);
// forward project layer extent back into native projection // forward project layer extent back into native projection
if (! prj_trans.forward(layer_ext, PROJ_ENVELOPE_POINTS)) if (! prj_trans.forward(layer_ext, PROJ_ENVELOPE_POINTS))
{ {