100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
#pragma once
|
||
|
||
#include <mbgl/util/geo.hpp>
|
||
#include <mbgl/util/chrono.hpp>
|
||
#include <mbgl/util/unitbezier.hpp>
|
||
#include <mbgl/util/optional.hpp>
|
||
|
||
#include <functional>
|
||
|
||
namespace mbgl {
|
||
|
||
/** Various options for describing the viewpoint of a map. All fields are
|
||
optional.
|
||
Anchor and center points are mutually exclusive, with preference for the
|
||
center point when both are set.
|
||
*/
|
||
struct CameraOptions {
|
||
CameraOptions& withCenter(const optional<LatLng>& o) { center = o; return *this; }
|
||
CameraOptions& withPadding(const EdgeInsets& p) { padding = p; return *this; }
|
||
CameraOptions& withAnchor(const optional<ScreenCoordinate>& o) { anchor = o; return *this; }
|
||
CameraOptions& withZoom(const optional<double>& o) { zoom = o; return *this; }
|
||
CameraOptions& withBearing(const optional<double>& o) { bearing = o; return *this; }
|
||
CameraOptions& withPitch(const optional<double>& o) { pitch = o; return *this; }
|
||
|
||
/** Coordinate at the center of the map. */
|
||
optional<LatLng> center;
|
||
|
||
/** Padding around the interior of the view that affects the frame of
|
||
reference for `center`. */
|
||
EdgeInsets padding;
|
||
|
||
/** Point of reference for `zoom` and `angle`, assuming an origin at the
|
||
top-left corner of the view. */
|
||
optional<ScreenCoordinate> anchor;
|
||
|
||
/** Zero-based zoom level. Constrained to the minimum and maximum zoom
|
||
levels. */
|
||
optional<double> zoom;
|
||
|
||
/** Bearing, measured in degrees from true north. Wrapped to [0, 360). */
|
||
optional<double> bearing;
|
||
|
||
/** Pitch toward the horizon measured in degrees , with 0 deg resulting in a
|
||
two-dimensional map. */
|
||
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);
|
||
}
|
||
|
||
/** Various options for describing a transition between viewpoints with
|
||
animation. All fields are optional; the default values depend on how this
|
||
struct is used. */
|
||
struct AnimationOptions {
|
||
/** Time to animate to the viewpoint defined herein. */
|
||
optional<Duration> duration;
|
||
|
||
/** Average velocity of a flyTo() transition, measured in screenfuls per
|
||
second, assuming a linear timing curve.
|
||
|
||
A <i>screenful</i> is the visible span in pixels. It does not correspond
|
||
to a fixed physical distance but rather varies by zoom level. */
|
||
optional<double> velocity;
|
||
|
||
/** Zero-based zoom level at the peak of the flyTo() transition’s flight
|
||
path. */
|
||
optional<double> minZoom;
|
||
|
||
/** The easing timing curve of the transition. */
|
||
optional<mbgl::util::UnitBezier> easing;
|
||
|
||
/** A function that is called on each frame of the transition, just before a
|
||
screen update, except on the last frame. The first parameter indicates
|
||
the elapsed time as a percentage of the duration. */
|
||
std::function<void(double)> transitionFrameFn;
|
||
|
||
/** A function that is called once on the last frame of the transition, just
|
||
before the corresponding screen update. */
|
||
std::function<void()> transitionFinishFn;
|
||
|
||
/** Creates an animation with no options specified. */
|
||
AnimationOptions() {}
|
||
|
||
/** Creates an animation with the specified duration. */
|
||
AnimationOptions(Duration d)
|
||
: duration(d) {}
|
||
};
|
||
|
||
} // namespace mbgl
|