1 files changed, 25 insertions, 0 deletions
diff --git a/src/mbgl/layout/symbol_projection.hpp b/src/mbgl/layout/symbol_projection.hpp
new file mode 100644
index 0000000000..2652fe7ace
--- /dev/null
+++ b/src/mbgl/layout/symbol_projection.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <mbgl/util/mat4.hpp>
+#include <mbgl/gl/vertex_buffer.hpp>
+#include <mbgl/programs/symbol_program.hpp>
+
+namespace mbgl {
+
+    class TransformState;
+    class RenderTile;
+    class FrameHistory;
+    class SymbolSizeBinder;
+    class PlacedSymbol;
+    namespace style {
+        class SymbolPropertyValues;
+    } // end namespace style
+
+    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);
+
+    void reprojectLineLabels(gl::VertexVector<SymbolDynamicLayoutAttributes::Vertex>&, const std::vector<PlacedSymbol>&,
+            const mat4& posMatrix, const style::SymbolPropertyValues&,
+            const RenderTile&, const SymbolSizeBinder& sizeBinder, const TransformState&, const FrameHistory& frameHistory);
+
+} // end namespace mbgl