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avoid overflowing

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This commit is contained in:
artemp 2014-08-05 11:57:57 +01:00
parent 59b666cb77
commit ebd183d58e
1 changed files with 2 additions and 2 deletions
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4
src/agg/process_polygon_pattern_symbolizer.cpp
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@ -143,8 +143,8 @@ void agg_renderer<T0,T1>::process(polygon_pattern_symbolizer const& sym,
path_type path(common_.t_,clipped,prj_trans); path_type path(common_.t_,clipped,prj_trans);
path.vertex(&x0,&y0); path.vertex(&x0,&y0);
} }
offset_x = unsigned(current_buffer_->width() - x0); offset_x = std::abs(current_buffer_->width() - x0);
offset_y = unsigned(current_buffer_->height() - y0); offset_y = std::abs(current_buffer_->height() - y0);
} }
span_gen_type sg(img_src, offset_x, offset_y); span_gen_type sg(img_src, offset_x, offset_y);