| 1 | #pragma once |
|---|
| 2 | |
|---|
| 3 | #include <mbgl/util/noncopyable.hpp> |
|---|
| 4 | #include <mbgl/tile/geometry_tile_data.hpp> |
|---|
| 5 | #include <mbgl/style/layer_type.hpp> |
|---|
| 6 | |
|---|
| 7 | #include <atomic> |
|---|
| 8 | |
|---|
| 9 | namespace mbgl { |
|---|
| 10 | |
|---|
| 11 | namespace gl { |
|---|
| 12 | class Context; |
|---|
| 13 | } // namespace gl |
|---|
| 14 | |
|---|
| 15 | class RenderLayer; |
|---|
| 16 | |
|---|
| 17 | class Bucket : private util::noncopyable { |
|---|
| 18 | public: |
|---|
| 19 | Bucket(style::LayerType layerType_) |
|---|
| 20 | : layerType(layerType_) { |
|---|
| 21 | } |
|---|
| 22 | |
|---|
| 23 | virtual ~Bucket() = default; |
|---|
| 24 | |
|---|
| 25 | // Check whether this bucket is of the given subtype. |
|---|
| 26 | template <class T> |
|---|
| 27 | bool is() const; |
|---|
| 28 | |
|---|
| 29 | // Dynamically cast this bucket to the given subtype. |
|---|
| 30 | template <class T> |
|---|
| 31 | T* as() { |
|---|
| 32 | return is<T>() ? reinterpret_cast<T*>(this) : nullptr; |
|---|
| 33 | } |
|---|
| 34 | |
|---|
| 35 | template <class T> |
|---|
| 36 | const T* as() const { |
|---|
| 37 | return is<T>() ? reinterpret_cast<const T*>(this) : nullptr; |
|---|
| 38 | } |
|---|
| 39 | |
|---|
| 40 | // Feature geometries are also used to populate the feature index. |
|---|
| 41 | // Obtaining these is a costly operation, so we do it only once, and |
|---|
| 42 | // pass-by-const-ref the geometries as a second parameter. |
|---|
| 43 | virtual void addFeature(const GeometryTileFeature&, |
|---|
| 44 | const GeometryCollection&) {}; |
|---|
| 45 | |
|---|
| 46 | // As long as this bucket has a Prepare render pass, this function is getting called. Typically, |
|---|
| 47 | // this only happens once when the bucket is being rendered for the first time. |
|---|
| 48 | virtual void upload(gl::Context&) = 0; |
|---|
| 49 | |
|---|
| 50 | virtual bool hasData() const = 0; |
|---|
| 51 | |
|---|
| 52 | virtual float getQueryRadius(const RenderLayer&) const { |
|---|
| 53 | return 0; |
|---|
| 54 | }; |
|---|
| 55 | |
|---|
| 56 | bool needsUpload() const { |
|---|
| 57 | return hasData() && !uploaded; |
|---|
| 58 | } |
|---|
| 59 | |
|---|
| 60 | protected: |
|---|
| 61 | style::LayerType layerType; |
|---|
| 62 | std::atomic<bool> uploaded { false }; |
|---|
| 63 | }; |
|---|
| 64 | |
|---|
| 65 | } // namespace mbgl |
|---|
| 66 | |
|---|
