camera.hpp

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#pragma once
 
#include <mbgl/util/chrono.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/unitbezier.hpp>
#include <mbgl/util/vectors.hpp>
 
#include <optional>
 
#include <functional>
 
namespace mbgl {
 
struct CameraOptions {
    CameraOptions& withCenter(const std::optional<LatLng>& o) { center = o; return *this; }
    CameraOptions& withPadding(const std::optional<EdgeInsets>& p) { padding = p; return *this; }
    CameraOptions& withAnchor(const std::optional<ScreenCoordinate>& o) { anchor = o; return *this; }
    CameraOptions& withZoom(const std::optional<double>& o) { zoom = o; return *this; }
    CameraOptions& withBearing(const std::optional<double>& o) { bearing = o; return *this; }
    CameraOptions& withPitch(const std::optional<double>& o) { pitch = o; return *this; }
 
    std::optional<LatLng> center;
 
    std::optional<EdgeInsets> padding;
 
    std::optional<ScreenCoordinate> anchor;
 
    std::optional<double> zoom;
 
    std::optional<double> bearing;
 
    std::optional<double> pitch;
};
 
constexpr bool operator==(const CameraOptions& a, const CameraOptions& b) {
    return a.center == b.center
        && a.padding == b.padding
        && a.anchor == b.anchor
        && a.zoom == b.zoom
        && a.bearing == b.bearing
        && a.pitch == b.pitch;
}
 
constexpr bool operator!=(const CameraOptions& a, const CameraOptions& b) {
    return !(a == b);
}
 
struct AnimationOptions {
    std::optional<Duration> duration;
 
    std::optional<double> velocity;
 
    std::optional<double> minZoom;
 
    std::optional<mbgl::util::UnitBezier> easing;
 
    std::function<void(double)> transitionFrameFn;
 
    std::function<void()> transitionFinishFn;
 
    AnimationOptions() = default;
 
    AnimationOptions(Duration d)
        : duration(d) {}
};
 
struct FreeCameraOptions {
    std::optional<vec3> position = std::nullopt;
 
    std::optional<vec4> orientation = std::nullopt;
 
    void setLocation(const LatLngAltitude& location);
 
    std::optional<LatLngAltitude> getLocation() const;
 
    void lookAtPoint(const LatLng& location, const std::optional<vec3>& upVector = std::nullopt);
 
    void setPitchBearing(double pitch, double bearing);
};
 
} // namespace mbgl