21 lines
717 B
C++
21 lines
717 B
C++
#pragma once
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#include <mbgl/util/image.hpp>
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namespace mbgl {
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namespace util {
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/*
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C++ port of https://github.com/mapbox/tiny-sdf, which is in turn based on the
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Felzenszwalb/Huttenlocher distance transform paper (https://cs.brown.edu/~pff/papers/dt-final.pdf).
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Note there exists an alternative C++ implementation from the paper’s authors at
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https://cs.brown.edu/~pff/dt/, which this implementation is not based on.
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Takes an alpha channel raster input and transforms it into an alpha channel
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Signed Distance Field (SDF) output of the same dimensions.
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*/
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AlphaImage transformRasterToSDF(const AlphaImage& rasterInput, double radius, double cutoff);
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} // namespace util
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} // namespace mbgl
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