[core, ios, macos, android, node] Heatmap layer (#11046)

Co-Authored-By: Konstantin Käfer <mail@kkaefer.com>
Co-Authored-By: Anand Thakker <anandthakker@users.noreply.github.com>
Co-Authored-By: Minh Nguyễn <1ec5@users.noreply.github.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/src/mbgl/renderer/buckets/heatmap_bucket.hpp b/src/mbgl/renderer/buckets/heatmap_bucket.hpp
new file mode 100644
index 0000000000..3b9f1edb81
--- /dev/null
+++ b/src/mbgl/renderer/buckets/heatmap_bucket.hpp
@@ -0,0 +1,40 @@
+#pragma once
+
+#include <mbgl/renderer/bucket.hpp>
+#include <mbgl/map/mode.hpp>
+#include <mbgl/tile/geometry_tile_data.hpp>
+#include <mbgl/gl/vertex_buffer.hpp>
+#include <mbgl/gl/index_buffer.hpp>
+#include <mbgl/programs/segment.hpp>
+#include <mbgl/programs/heatmap_program.hpp>
+#include <mbgl/style/layers/heatmap_layer_properties.hpp>
+
+namespace mbgl {
+
+class BucketParameters;
+
+class HeatmapBucket : public Bucket {
+public:
+    HeatmapBucket(const BucketParameters&, const std::vector<const RenderLayer*>&);
+
+    void addFeature(const GeometryTileFeature&,
+                    const GeometryCollection&) override;
+    bool hasData() const override;
+
+    void upload(gl::Context&) override;
+
+    float getQueryRadius(const RenderLayer&) const override;
+
+    gl::VertexVector<HeatmapLayoutVertex> vertices;
+    gl::IndexVector<gl::Triangles> triangles;
+    SegmentVector<HeatmapAttributes> segments;
+
+    optional<gl::VertexBuffer<HeatmapLayoutVertex>> vertexBuffer;
+    optional<gl::IndexBuffer<gl::Triangles>> indexBuffer;
+
+    std::map<std::string, HeatmapProgram::PaintPropertyBinders> paintPropertyBinders;
+
+    const MapMode mode;
+};
+
+} // namespace mbgl