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#ifndef MBGL_MAP_TRANSFORM
#define MBGL_MAP_TRANSFORM
#include <mbgl/map/transform_state.hpp>
#include <mbgl/util/chrono.hpp>
#include <mbgl/map/update.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <cstdint>
#include <cmath>
#include <mutex>
namespace mbgl {
class View;
class Transform : private util::noncopyable {
public:
Transform(View&);
// Map view
// Note: width * ratio does not necessarily equal fb_width
bool resize(uint16_t width, uint16_t height, float ratio,
uint16_t fb_width, uint16_t fb_height);
// Position
void moveBy(double dx, double dy, Duration = Duration::zero());
void setLatLng(LatLng latLng, Duration = Duration::zero());
void setLatLngZoom(LatLng latLng, double zoom, Duration = Duration::zero());
inline const LatLng getLatLng() const { return state.getLatLng(); }
// Zoom
void scaleBy(double ds, double cx = -1, double cy = -1, Duration = Duration::zero());
void setScale(double scale, double cx = -1, double cy = -1, Duration = Duration::zero());
void setZoom(double zoom, Duration = Duration::zero());
double getZoom() const;
double getScale() const;
// Angle
void rotateBy(double sx, double sy, double ex, double ey, Duration = Duration::zero());
void setAngle(double angle, Duration = Duration::zero());
void setAngle(double angle, double cx, double cy);
double getAngle() const;
// Transitions
bool needsTransition() const;
UpdateType updateTransitions(TimePoint now);
void cancelTransitions();
// Gesture
void setGestureInProgress(bool);
// Transform state
const TransformState currentState() const;
private:
// Functions prefixed with underscores will *not* perform any locks. It is the caller's
// responsibility to lock this object.
void _moveBy(double dx, double dy, Duration = Duration::zero());
void _setScale(double scale, double cx, double cy, Duration = Duration::zero());
void _setScaleXY(double new_scale, double xn, double yn, Duration = Duration::zero());
void _setAngle(double angle, Duration = Duration::zero());
View &view;
mutable std::recursive_mutex mtx;
TransformState state;
void startTransition(std::function<Update(double)> frame,
std::function<void()> finish,
Duration);
TimePoint transitionStart;
Duration transitionDuration;
std::function<Update(TimePoint)> transitionFrameFn;
std::function<void()> transitionFinishFn;
};
}
#endif
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