コード例 #1
0
ファイル: Navigator.cs プロジェクト: charlenni/Mapsui
 /// <summary>
 /// Zoom to a given resolution with a given point as center
 /// </summary>
 /// <param name="resolution">Resolution to zoom</param>
 /// <param name="centerOfZoom">Center of zoom in screen coordinates. This is the one point in the map that
 /// stays on the same location while zooming in. /// For instance, in mouse wheel zoom animation the position
 /// of the mouse pointer can be the center of zoom. Note, that the centerOfZoom is in screen coordinates not
 /// world coordinates, this is because this is most convenient for the main use case, zoom with the mouse
 /// position as center.</param>
 /// <param name="duration">Duration for animation in milliseconds.</param>
 /// <param name="easing">The easing of the animation when duration is > 0</param>
 public void ZoomTo(double resolution, MPoint centerOfZoom, long duration = 0, Easing?easing = default)
 {
     var(worldCenterOfZoomX, worldCenterOfZoomY) = _viewport.ScreenToWorldXY(centerOfZoom.X, centerOfZoom.Y);
     _viewport.SetAnimations(ZoomAroundLocationAnimation.Create(_viewport, worldCenterOfZoomX, worldCenterOfZoomY, resolution,
                                                                _viewport.CenterX, _viewport.CenterY, _viewport.Resolution, duration));
     OnNavigated(duration, ChangeType.Discrete);
 }