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+ consistent raster bbox calc :

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x0 = int(minx+0.5)
  y0 = int(miny+0.5)
  x1 = int(maxx+0.5)
  y1 = int(maxy+0.5)

  width = x1 - x0
  height = y1 - y0
This commit is contained in:
Artem Pavlenko 2010-02-03 12:19:57 +00:00
parent 05f5473924
commit 22d8fbe7f0
1 changed files with 15 additions and 4 deletions
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19
plugins/input/raster/raster_featureset.cpp
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@ -73,10 +73,21 @@ feature_ptr raster_featureset<LookupPolicy>::next()
CoordTransform t(image_width,image_height,extent_,0,0); CoordTransform t(image_width,image_height,extent_,0,0);
box2d<double> intersect=bbox_.intersect(curIter_->envelope()); box2d<double> intersect=bbox_.intersect(curIter_->envelope());
box2d<double> ext=t.forward(intersect); box2d<double> ext=t.forward(intersect);
image_data_32 image(int(ext.width()+0.5),int(ext.height()+0.5));
reader->read(int(ext.minx()+0.5),int(ext.miny()+0.5),image); int start_x = int(ext.minx() + 0.5);
feature->set_raster(mapnik::raster_ptr(new raster(intersect,image))); int start_y = int(ext.miny() + 0.5);
} int end_x = int(ext.maxx() + 0.5);
int end_y = int(ext.maxy() + 0.5);
unsigned w = end_x - start_x;
unsigned h = end_y - start_y;
if ( w > 0 && h > 0)
{
image_data_32 image(w,h);
reader->read(start_x,start_y,image);
feature->set_raster(mapnik::raster_ptr(new raster(intersect,image)));
}
}
} }
} }
catch (...) catch (...)