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-rw-r--r--src/mbgl/layout/symbol_projection.hpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mbgl/layout/symbol_projection.hpp b/src/mbgl/layout/symbol_projection.hpp
index 72d6172d6b..51b3896edf 100644
--- a/src/mbgl/layout/symbol_projection.hpp
+++ b/src/mbgl/layout/symbol_projection.hpp
@@ -33,6 +33,9 @@ namespace mbgl {
mat4 getLabelPlaneMatrix(const mat4& posMatrix, const bool pitchWithMap, const bool rotateWithMap, const TransformState& state, const float pixelsToTileUnits);
mat4 getGlCoordMatrix(const mat4& posMatrix, const bool pitchWithMap, const bool rotateWithMap, const TransformState& state, const float pixelsToTileUnits);
+
+ typedef std::pair<Point<float>,float> PointAndCameraDistance;
+ PointAndCameraDistance project(const Point<float>& point, const mat4& matrix);
void reprojectLineLabels(gl::VertexVector<SymbolDynamicLayoutAttributes::Vertex>&, const std::vector<PlacedSymbol>&,
const mat4& posMatrix, const style::SymbolPropertyValues&,