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impl debug box drawing in geo extents

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This commit is contained in:
Dane Springmeyer 2012-08-01 16:40:48 -07:00
parent 6f15731c37
commit 092a1bf625
1 changed files with 21 additions and 0 deletions
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21
src/agg/agg_renderer.cpp
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@ -444,6 +444,27 @@ void agg_renderer<T>::debug_draw_box(R& buf, box2d<double> const& box,
agg::render_scanlines(*ras_ptr, sl_line, ren); agg::render_scanlines(*ras_ptr, sl_line, ren);
} }
template <typename T>
void agg_renderer<T>::draw_geo_extent(box2d<double> const& extent, mapnik::color const& color)
{
box2d<double> box = t_.forward(extent);
double x0 = box.minx();
double x1 = box.maxx();
double y0 = box.miny();
double y1 = box.maxy();
unsigned rgba = color.rgba();
for (double x=x0; x<x1; x++)
{
pixmap_.setPixel(x, y0, rgba);
pixmap_.setPixel(x, y1, rgba);
}
for (double y=y0; y<y1; y++)
{
pixmap_.setPixel(x0, y, rgba);
pixmap_.setPixel(x1, y, rgba);
}
}
template class agg_renderer<image_32>; template class agg_renderer<image_32>;
template void agg_renderer<image_32>::debug_draw_box<agg::rendering_buffer>( template void agg_renderer<image_32>::debug_draw_box<agg::rendering_buffer>(
agg::rendering_buffer& buf, agg::rendering_buffer& buf,