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+ avoid applying scaling_factor twice for raster markers

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+ cleanup
This commit is contained in:
artemp 2012-07-25 11:43:43 +01:00
parent e48057b274
commit 774e1b1d77
1 changed files with 12 additions and 19 deletions
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31
src/agg/process_markers_symbolizer.cpp
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@ -142,26 +142,18 @@ private:
};
template <typename Rasterizer, typename RendererBuffer>
void render_raster_marker(Rasterizer & ras, RendererBuffer & renb, agg::scanline_u8 & sl,
pixel_position const& pos, image_data_32 const& src,
agg::trans_affine const& tr,double opacity,
double scale_factor)
void render_raster_marker(Rasterizer & ras, RendererBuffer & renb,
agg::scanline_u8 & sl, image_data_32 const& src,
agg::trans_affine const& marker_tr, double opacity)
{
double width = src.width();
double height = src.height();
double p[8];
p[0] = pos.x; p[1] = pos.y;
p[2] = pos.x + width; p[3] = pos.y;
p[4] = pos.x + width; p[5] = pos.y + height;
p[6] = pos.x; p[7] = pos.y + height;
agg::trans_affine marker_tr;
marker_tr *= agg::trans_affine_translation(-pos.x,-pos.y);
marker_tr *= tr;
marker_tr *= agg::trans_affine_scaling(scale_factor);
marker_tr *= agg::trans_affine_translation(pos.x,pos.y);
p[0] = 0; p[1] = 0;
p[2] = width; p[3] = 0;
p[4] = width; p[5] = height;
p[6] = 0; p[7] = height;
marker_tr.transform(&p[0], &p[1]);
marker_tr.transform(&p[2], &p[3]);
@ -244,8 +236,8 @@ struct raster_markers_rasterizer_dispatch
detector_.has_placement(transformed_bbox))
{
render_raster_marker(ras_, renb_, sl_, pixel_position(x,y), src_,
marker_trans_, sym_.get_opacity(), scale_factor_);
render_raster_marker(ras_, renb_, sl_, src_,
matrix, sym_.get_opacity());
if (!sym_.get_ignore_placement())
detector_.insert(transformed_bbox);
}
@ -261,8 +253,9 @@ struct raster_markers_rasterizer_dispatch
{
agg::trans_affine matrix = marker_trans_;
matrix.rotate(angle);
render_raster_marker(ras_, renb_, sl_, pixel_position(x,y), src_,
matrix, sym_.get_opacity(), scale_factor_);
matrix.translate(x,y);
render_raster_marker(ras_, renb_, sl_, src_,
matrix, sym_.get_opacity());
}
}
}