#pragma once

#include <mbgl/map/camera.hpp>
#include <mbgl/util/geo.hpp>

namespace mbgl {

class UpdateParameters;

/**
 * RendererState acts as a Memento object that is able to extract data out of
 * UpdateParameters (an opaque object from the public API perspective).
 */
class RendererState {
public:
    /// Obtains a CameraOptions out of a given UpdateParameters object.
    static CameraOptions getCameraOptions(const UpdateParameters&, const EdgeInsets& = {});

    /// Returns whether an image with the given ID exists from a given UpdateParamters object.
    static bool hasImage(const UpdateParameters&, const std::string& id);

    /// Returns whether a layer with the given ID exists from a given UpdateParamters object.
    static bool hasLayer(const UpdateParameters&, const std::string& id);

    /// Returns whether a source with the given ID exists from a given UpdateParamters object.
    static bool hasSource(const UpdateParameters&, const std::string& id);

    /// Obtains the geographical coordinate out of a given screen coordinate.
    static ScreenCoordinate pixelForLatLng(const UpdateParameters&, const LatLng&);

    /// Obtains the screen coordinate out of a given geographical coordinate.
    static LatLng latLngForPixel(const UpdateParameters&, const ScreenCoordinate&);
};

} // namespace mbgl