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#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 LineBucket : public Bucket {
public:
LineBucket(uint32_t overscaling);
~LineBucket() override;
void upload(gl::Context&) override;
void render(Painter&, PaintParameters&, const style::Layer&, const RenderTile&) override;
bool hasData() const override;
void addGeometry(const GeometryCollection&);
void addGeometry(const GeometryCoordinates& line);
style::LineLayoutProperties::Evaluated layout;
gl::VertexVector<LineVertex> vertices;
gl::IndexVector<gl::Triangles> triangles;
gl::SegmentVector<LineAttributes> segments;
optional<gl::VertexBuffer<LineVertex>> vertexBuffer;
optional<gl::IndexBuffer<gl::Triangles>> indexBuffer;
private:
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;
};
} // namespace mbgl
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