1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
#ifndef MBGL_MAP_TRANSFORM
#define MBGL_MAP_TRANSFORM
#include <mbgl/map/camera.hpp>
#include <mbgl/map/mode.hpp>
#include <mbgl/map/transform_state.hpp>
#include <mbgl/map/update.hpp>
#include <mbgl/util/chrono.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <cstdint>
#include <cmath>
#include <functional>
namespace mbgl {
class View;
class Transform : private util::noncopyable {
public:
Transform(View&, ConstrainMode);
// Map view
bool resize(std::array<uint16_t, 2> size);
// Camera
/** Instantaneously, synchronously applies the given camera options. */
void jumpTo(const CameraOptions&);
/** Asynchronously transitions all specified camera options linearly along
an optional time curve. */
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. */
void flyTo(const CameraOptions&, const AnimationOptions& = {});
// 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 PrecisionPoint& offset, const Duration& = Duration::zero());
void setLatLng(const LatLng&, const Duration& = Duration::zero());
void setLatLng(const LatLng&, const PrecisionPoint&, const Duration& = Duration::zero());
void setLatLngZoom(const LatLng&, double zoom, const Duration& = Duration::zero());
LatLng getLatLng() const { return state.getLatLng(); }
// Zoom
/** Scales the map, keeping the given point fixed within the view.
@param ds The difference in scale factors to scale the map by.
@param anchor A point relative to the top-left corner of the view. */
void scaleBy(double ds, const PrecisionPoint& anchor = {NAN, NAN}, const Duration& = Duration::zero());
/** Sets the scale factor, keeping the given point fixed within the view.
@param scale The new scale factor.
@param anchor A point relative to the top-left corner of the view. */
void setScale(double scale, const PrecisionPoint& anchor = {NAN, NAN}, const Duration& = Duration::zero());
/** Sets the zoom level.
@param zoom The new zoom level. */
void setZoom(double zoom, const Duration& = Duration::zero());
/** Returns the zoom level. */
double getZoom() const;
/** Returns the scale factor. */
double getScale() const;
// Angle
void rotateBy(const PrecisionPoint& first, const PrecisionPoint& second, const Duration& = Duration::zero());
/** Sets the angle of rotation.
@param angle The new angle of rotation, measured in radians
counterclockwise from true north. */
void setAngle(double angle, const Duration& = Duration::zero());
/** Sets the angle of rotation, keeping the given point fixed within the view.
@param angle The new angle of rotation, measured in radians
counterclockwise from true north.
@param anchor A point relative to the top-left corner of the view. */
void setAngle(double angle, const PrecisionPoint& anchor, const Duration& = Duration::zero());
/** Returns the angle of rotation.
@return The angle of rotation, measured in radians counterclockwise from
true north. */
double getAngle() const;
// Pitch
void setPitch(double pitch, const Duration& = Duration::zero());
double getPitch() const;
// North Orientation
void setNorthOrientation(NorthOrientation);
NorthOrientation getNorthOrientation() const;
// Transitions
bool inTransition() const;
Update updateTransitions(const TimePoint& now);
void cancelTransitions();
// Gesture
void setGestureInProgress(bool);
bool isGestureInProgress() const { return state.isGestureInProgress(); }
// Transform state
TransformState getState() const { return state; }
bool isRotating() const { return state.isRotating(); }
bool isScaling() const { return state.isScaling(); }
bool isPanning() const { return state.isPanning(); }
private:
void moveLatLng(const LatLng&, const PrecisionPoint&);
View &view;
TransformState state;
void startTransition(std::function<double(double)> easing,
std::function<Update(double)> frame,
std::function<void()> finish,
const Duration& duration);
TimePoint transitionStart;
Duration transitionDuration;
std::function<Update(const TimePoint)> transitionFrameFn;
std::function<void()> transitionFinishFn;
};
} // namespace mbgl
#endif
|
