1 files changed, 67 insertions, 0 deletions
diff --git a/src/mbgl/renderer/buckets/line_bucket.hpp b/src/mbgl/renderer/buckets/line_bucket.hpp
new file mode 100644
index 0000000000..c319548714
--- /dev/null
+++ b/src/mbgl/renderer/buckets/line_bucket.hpp
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <mbgl/renderer/bucket.hpp>
+#include <mbgl/tile/geometry_tile_data.hpp>
+#include <mbgl/gl/vertex_buffer.hpp>
+#include <mbgl/gl/index_buffer.hpp>
+#include <mbgl/gl/segment.hpp>
+#include <mbgl/programs/line_program.hpp>
+#include <mbgl/style/layers/line_layer_properties.hpp>
+
+#include <vector>
+
+namespace mbgl {
+
+class BucketParameters;
+class RenderLineLayer;
+
+class LineBucket : public Bucket {
+public:
+    LineBucket(const BucketParameters&,
+               const std::vector<const RenderLayer*>&,
+               const style::LineLayoutProperties&);
+
+    void addFeature(const GeometryTileFeature&,
+                    const GeometryCollection&) override;
+    bool hasData() const override;
+
+    void upload(gl::Context&) override;
+    void render(Painter&, PaintParameters&, const RenderLayer&, const RenderTile&) override;
+
+    float getQueryRadius(const RenderLayer&) const override;
+
+    style::LineLayoutProperties::PossiblyEvaluated layout;
+
+    gl::VertexVector<LineLayoutVertex> vertices;
+    gl::IndexVector<gl::Triangles> triangles;
+    gl::SegmentVector<LineAttributes> segments;
+
+    optional<gl::VertexBuffer<LineLayoutVertex>> vertexBuffer;
+    optional<gl::IndexBuffer<gl::Triangles>> indexBuffer;
+
+    std::map<std::string, LineProgram::PaintPropertyBinders> paintPropertyBinders;
+
+private:
+    void addGeometry(const GeometryCoordinates&, FeatureType);
+
+    struct TriangleElement {
+        TriangleElement(uint16_t a_, uint16_t b_, uint16_t c_) : a(a_), b(b_), c(c_) {}
+        uint16_t a, b, c;
+    };
+    void addCurrentVertex(const GeometryCoordinate& currentVertex, double& distance,
+            const Point<double>& normal, double endLeft, double endRight, bool round,
+            std::size_t startVertex, std::vector<LineBucket::TriangleElement>& triangleStore);
+    void addPieSliceVertex(const GeometryCoordinate& currentVertex, double distance,
+            const Point<double>& extrude, bool lineTurnsLeft, std::size_t startVertex,
+            std::vector<TriangleElement>& triangleStore);
+
+    std::ptrdiff_t e1;
+    std::ptrdiff_t e2;
+    std::ptrdiff_t e3;
+
+    const uint32_t overscaling;
+
+    float getLineWidth(const RenderLineLayer& layer) const;
+};
+
+} // namespace mbgl