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#pragma once
#include <mbgl/map/camera.hpp>
#include <mbgl/map/projection_mode.hpp>
#include <mbgl/map/map_observer.hpp>
#include <mbgl/map/mode.hpp>
#include <mbgl/map/transform_state.hpp>
#include <mbgl/util/chrono.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <mbgl/util/optional.hpp>
#include <cstdint>
#include <cmath>
#include <functional>
namespace mbgl {
class Transform : private util::noncopyable {
public:
Transform(MapObserver& = MapObserver::nullObserver(),
ConstrainMode = ConstrainMode::HeightOnly,
ViewportMode = ViewportMode::Default);
Transform(const TransformState &state_) : observer(MapObserver::nullObserver()), state(state_) {}
// Map view
void resize(Size size);
// Camera
/** Returns the current camera options. */
CameraOptions getCameraOptions(const optional<EdgeInsets>&) const;
/** Instantaneously, synchronously applies the given camera options. */
void jumpTo(const CameraOptions&);
/** Asynchronously transitions all specified camera options linearly along
an optional time curve. However, center coordinate is not transitioned
linearly as, instead, ground speed is kept linear.*/
void easeTo(const CameraOptions&, const AnimationOptions& = {});
/** Asynchronously zooms out, pans, and zooms back into the given camera
along a great circle, as though the viewer is riding a supersonic
jetcopter.
Parameter linearZoomInterpolation: when true, there is no additional
zooming out as zoom is linearly interpolated from current to given
camera zoom. This is used for easeTo.*/
void flyTo(const CameraOptions&, const AnimationOptions& = {}, bool linearZoomInterpolation = false);
// Position
/** Pans the map by the given amount.
@param offset The distance to pan the map by, measured in pixels from
top to bottom and from left to right. */
void moveBy(const ScreenCoordinate& offset, const AnimationOptions& = {});
LatLng getLatLng(LatLng::WrapMode = LatLng::Wrapped) const;
// Bounds
void setLatLngBounds(LatLngBounds);
void setMinZoom(double);
void setMaxZoom(double);
void setMinPitch(double);
void setMaxPitch(double);
// Zoom
/** Returns the zoom level. */
double getZoom() const;
// Bearing
void rotateBy(const ScreenCoordinate& first, const ScreenCoordinate& second, const AnimationOptions& = {});
double getBearing() const;
// Pitch
double getPitch() const;
// North Orientation
void setNorthOrientation(NorthOrientation);
NorthOrientation getNorthOrientation() const;
// Constrain mode
void setConstrainMode(ConstrainMode);
ConstrainMode getConstrainMode() const;
// Viewport mode
void setViewportMode(ViewportMode);
ViewportMode getViewportMode() const;
// Projection mode
void setProjectionMode(const ProjectionMode&);
ProjectionMode getProjectionMode() const;
// Transitions
bool inTransition() const;
void updateTransitions(const TimePoint& now);
TimePoint getTransitionStart() const { return transitionStart; }
Duration getTransitionDuration() const { return transitionDuration; }
void cancelTransitions();
// Gesture
void setGestureInProgress(bool);
bool isGestureInProgress() const { return state.isGestureInProgress(); }
// Transform state
const TransformState& getState() const { return state; }
bool isRotating() const { return state.isRotating(); }
bool isScaling() const { return state.isScaling(); }
bool isPanning() const { return state.isPanning(); }
// Conversion and projection
ScreenCoordinate latLngToScreenCoordinate(const LatLng&) const;
LatLng screenCoordinateToLatLng(const ScreenCoordinate&, LatLng::WrapMode = LatLng::Wrapped) const;
FreeCameraOptions getFreeCameraOptions() const;
void setFreeCameraOptions(const FreeCameraOptions& options);
private:
MapObserver& observer;
TransformState state;
void startTransition(const CameraOptions&,
const AnimationOptions&,
const std::function<void(double)>&,
const Duration&);
// We don't want to show horizon: limit max pitch based on edge insets.
double getMaxPitchForEdgeInsets(const EdgeInsets &insets) const;
TimePoint transitionStart;
Duration transitionDuration;
std::function<bool(const TimePoint)> transitionFrameFn;
std::function<void()> transitionFinishFn;
};
} // namespace mbgl
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