custom_layer.hpp

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#pragma once
 
#include <mbgl/style/layer.hpp>
 
#include <array>
 
namespace mbgl {
namespace style {
 
struct CustomLayerRenderParameters {
    double width;
    double height;
    double latitude;
    double longitude;
    double zoom;
    double bearing;
    double pitch;
    double fieldOfView;
    std::array<double, 16> projectionMatrix;
};
 
class CustomLayerHost {
public:
    virtual ~CustomLayerHost() = default;
    virtual void initialize() = 0;
 
    virtual void render(const CustomLayerRenderParameters&) = 0;
 
    virtual void contextLost() = 0;
 
    virtual void deinitialize() = 0;
};
 
class CustomLayer final : public Layer {
public:
    CustomLayer(const std::string& id,
                std::unique_ptr<CustomLayerHost> host);
 
    CustomLayer(const CustomLayer&) = delete;
    ~CustomLayer() final;
    class Impl;
    const Impl& impl() const;
    Mutable<Impl> mutableImpl() const;
 
private:
    std::optional<conversion::Error> setPropertyInternal(const std::string& name,
                                                         const conversion::Convertible& value) final;
    StyleProperty getProperty(const std::string&) const final;
    std::unique_ptr<Layer> cloneRef(const std::string& id) const final;
    Mutable<Layer::Impl> mutableBaseImpl() const final;
};
 
} // namespace style
} // namespace mbgl