/// <inheritdoc/>
public void Initialize(
MapRendererBase mapRenderer,
MapScene mapScene,
float animationTimeScale,
MapSceneAnimationKind mapSceneAnimationKind)
{
if (mapRenderer == null)
{
throw new ArgumentNullException(nameof(mapRenderer));
}
if (mapScene == null)
{
throw new ArgumentNullException(nameof(mapScene));
}
_runningTime = 0;
_startMercatorCenter = mapRenderer.Center.ToMercatorCoordinate();
_startZoomLevel = mapRenderer.ZoomLevel;
mapScene.GetLocationAndZoomLevel(mapRenderer, out var endLocation, out _endZoomLevel);
_endZoomLevel = _endZoomLevel < mapRenderer.MinimumZoomLevel ? mapRenderer.MinimumZoomLevel : _endZoomLevel;
_endZoomLevel = _endZoomLevel > mapRenderer.MaximumZoomLevel ? mapRenderer.MaximumZoomLevel : _endZoomLevel;
_endMercatorCenter = endLocation.ToMercatorCoordinate();
_startHeightInMercator = ZoomLevelToMercatorAltitude(_startZoomLevel);
_endHeightInMercator = ZoomLevelToMercatorAltitude(_endZoomLevel);
// Determine if we should use a bow animation or a linear animation.
// Simple rule for now: If the destination is already visible, use linear; otherwise, bow.
_isLinearAnimation =
mapSceneAnimationKind == MapSceneAnimationKind.Linear ||
mapSceneAnimationKind == MapSceneAnimationKind.SmoothLinear ||
mapRenderer.Bounds.Intersects(endLocation);
_isSmoothed = mapSceneAnimationKind == MapSceneAnimationKind.SmoothLinear;
// While linear animation doesn't follow the same code path as the bow animation, we can still use this function to compute
// a reasonable duration for the linear animation.
ComputeBowAnimationInitialValues(
P,
V * animationTimeScale,
out _u0,
out _u1,
out _w0,
out _, // w1
out _r0,
out _, // r1
out _S,
out _animationTime);
// Tweaking the resulting animation time to speed up slower animations and slow down the shorter animation.
_animationTime /= 6.0; // Normalize.
_animationTime = Math.Pow(_animationTime, 1.0 / 3.0); // Rescale.
_animationTime *= 6.0; // Convert back to original range.
}
