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+ inflate query extent to avoid line joining artifacts

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This commit is contained in:
Artem Pavlenko 2012-03-07 15:01:55 +00:00
parent 11511e9b20
commit 13ea874585
1 changed files with 4 additions and 3 deletions
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7
src/agg/process_line_symbolizer.cpp
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@ -63,7 +63,8 @@ void agg_renderer<T>::process(line_symbolizer const& sym,
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4); agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
agg::pixfmt_rgba32_plain pixf(buf); agg::pixfmt_rgba32_plain pixf(buf);
box2d<double> ext = query_extent_ * 1.1;
if (sym.get_rasterizer() == RASTERIZER_FAST) if (sym.get_rasterizer() == RASTERIZER_FAST)
{ {
typedef agg::renderer_outline_aa<ren_base> renderer_type; typedef agg::renderer_outline_aa<ren_base> renderer_type;
@ -86,7 +87,7 @@ void agg_renderer<T>::process(line_symbolizer const& sym,
if (geom.num_points() > 1) if (geom.num_points() > 1)
{ {
clipped_geometry_type clipped(geom); clipped_geometry_type clipped(geom);
clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy()); clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy());
path_type path(t_,clipped,prj_trans); path_type path(t_,clipped,prj_trans);
ras.add_path(path); ras.add_path(path);
} }
@ -129,7 +130,7 @@ void agg_renderer<T>::process(line_symbolizer const& sym,
if (geom.num_points() > 1) if (geom.num_points() > 1)
{ {
clipped_geometry_type clipped(geom); clipped_geometry_type clipped(geom);
clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy()); clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy());
path_type path(t_,clipped,prj_trans); path_type path(t_,clipped,prj_trans);
if (stroke_.has_dash()) if (stroke_.has_dash())