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finish fixing pixel alignment for raster rendering in cairo - closes #1471

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This commit is contained in:
Dane Springmeyer 2012-09-12 13:25:40 -07:00
parent 61e8a9c236
commit 2a3a402f5d
2 changed files with 12 additions and 10 deletions
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6
src/agg/process_raster_symbolizer.cpp
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@ -68,10 +68,10 @@ void agg_renderer<T>::process(raster_symbolizer const& sym,
raster target(target_ext, target_data);
scaling_method_e scaling_method = sym.get_scaling_method();
double filter_radius = sym.calculate_filter_factor();
double offset_x = ext.minx() - start_x;
double offset_y = ext.miny() - start_y;
if (!prj_trans.equal())
{
double offset_x = ext.minx() - start_x;
double offset_y = ext.miny() - start_y;
reproject_and_scale_raster(target, *source, prj_trans,
offset_x, offset_y,
sym.get_mesh_size(),
@ -82,7 +82,7 @@ void agg_renderer<T>::process(raster_symbolizer const& sym,
{
if (scaling_method == SCALING_BILINEAR8)
{
scale_image_bilinear8<image_data_32>(target.data_,source->data_, offset_x, offset_y);
scale_image_bilinear8<image_data_32>(target.data_,source->data_, 0.0, 0.0);
} else
{
double scaling_ratio = ext.width() / source->data_.width();

16
src/cairo_renderer.cpp
View file

@ -1434,10 +1434,10 @@ void cairo_renderer_base::process(raster_symbolizer const& sym,
raster target(target_ext, target_data);
scaling_method_e scaling_method = sym.get_scaling_method();
double filter_radius = sym.calculate_filter_factor();
double offset_x = ext.minx() - start_x;
double offset_y = ext.miny() - start_y;
if (!prj_trans.equal())
{
double offset_x = ext.minx() - start_x;
double offset_y = ext.miny() - start_y;
reproject_and_scale_raster(target, *source, prj_trans,
offset_x, offset_y,
sym.get_mesh_size(),
@ -1446,16 +1446,18 @@ void cairo_renderer_base::process(raster_symbolizer const& sym,
}
else
{
if (scaling_method == SCALING_BILINEAR8){
scale_image_bilinear8<image_data_32>(target.data_,source->data_, offset_x, offset_y);
} else {
if (scaling_method == SCALING_BILINEAR8)
{
scale_image_bilinear8<image_data_32>(target.data_,source->data_, 0.0, 0.0);
} else
{
double scaling_ratio = ext.width() / source->data_.width();
scale_image_agg<image_data_32>(target.data_,
source->data_,
scaling_method,
scaling_ratio,
offset_x,
offset_y,
0.0,
0.0,
filter_radius);
}
}