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Restored the proper useage of filter factor for image rescaling, where it is used in a variety of different algorithms for resampling.

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This commit is contained in:
Blake Thompson 2017-06-13 09:17:54 -05:00
parent 3451d11b00
commit 5bc80e909e
4 changed files with 11 additions and 8 deletions
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11
plugins/input/gdal/gdal_featureset.cpp
View file

@ -148,6 +148,7 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
view_transform t(raster_width_, raster_height_, raster_extent_, 0, 0);
box2d<double> intersect = raster_extent_.intersect(q.get_bbox());
box2d<double> box = t.forward(intersect);
double filter_factor = q.get_filter_factor();
//size of resized output pixel in source image domain
double margin_x = 1.0 / (std::fabs(dx_) * std::get<0>(q.resolution()));
@ -224,7 +225,7 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
{
throw datasource_exception(CPLGetLastErrorMsg());
}
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, 0.0);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, filter_factor);
// set nodata value to be used in raster colorizer
if (nodata_value_) raster->set_nodata(*nodata_value_);
else raster->set_nodata(raster_nodata);
@ -244,7 +245,7 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
{
throw datasource_exception(CPLGetLastErrorMsg());
}
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, 0.0);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, filter_factor);
// set nodata value to be used in raster colorizer
if (nodata_value_) raster->set_nodata(*nodata_value_);
else raster->set_nodata(raster_nodata);
@ -263,7 +264,7 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
{
throw datasource_exception(CPLGetLastErrorMsg());
}
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, 0.0);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, filter_factor);
// set nodata value to be used in raster colorizer
if (nodata_value_) raster->set_nodata(*nodata_value_);
else raster->set_nodata(raster_nodata);
@ -283,7 +284,7 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
{
throw datasource_exception(CPLGetLastErrorMsg());
}
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, 0.0);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, filter_factor);
// set nodata value to be used in raster colorizer
if (nodata_value_) raster->set_nodata(*nodata_value_);
else raster->set_nodata(raster_nodata);
@ -583,7 +584,7 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
}
}
}
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, 0.0);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, filter_factor);
// set nodata value to be used in raster colorizer
if (nodata_value_) raster->set_nodata(*nodata_value_);
else raster->set_nodata(raster_nodata);

5
plugins/input/raster/raster_featureset.cpp
View file

@ -55,7 +55,8 @@ raster_featureset<LookupPolicy>::raster_featureset(LookupPolicy const& policy,
extent_(extent),
bbox_(q.get_bbox()),
curIter_(policy_.begin()),
endIter_(policy_.end())
endIter_(policy_.end()),
filter_factor_(q.get_filter_factor())
{
}
@ -115,7 +116,7 @@ feature_ptr raster_featureset<LookupPolicy>::next()
rem.maxy() + y_off + height);
feature_raster_extent = t.backward(feature_raster_extent);
mapnik::image_any data = reader->read(x_off, y_off, width, height);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, std::move(data), 1.0);
mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, std::move(data), filter_factor_);
feature->set_raster(raster);
}
}

1
plugins/input/raster/raster_featureset.hpp
View file

@ -321,6 +321,7 @@ private:
mapnik::box2d<double> bbox_;
iterator_type curIter_;
iterator_type endIter_;
double filter_factor_;
};
#endif // RASTER_FEATURESET_HPP

2
test/data-visual

@ -1 +1 @@
Subproject commit 0ca64e7760dfd6b1573b7a8c65ede3521a5ea5c3
Subproject commit fd518f1f512b8aea4ac740c2ce12c249616a291c