void Update()
{
//Camera Debugging
//Vector3[] frustumCorners = new Vector3[4];
//_cbtpOptions.camera.CalculateFrustumCorners(new Rect(0, 0, 1, 1), _cbtpOptions.camera.transform.position.y, Camera.MonoOrStereoscopicEye.Mono, frustumCorners);
//for (int i = 0; i < 4; i++)
//{
// var worldSpaceCorner = _cbtpOptions.camera.transform.TransformVector(frustumCorners[i]);
// Debug.DrawRay(_cbtpOptions.camera.transform.position, worldSpaceCorner, Color.blue);
//}
if (!_shouldUpdate)
{
return;
}
_elapsedTime += Time.deltaTime;
if (_elapsedTime >= _cbtpOptions.updateInterval)
{
_elapsedTime = 0f;
//update viewport in case it was changed by switching zoom level
Vector2dBounds _viewPortWebMercBounds = getcurrentViewPortWebMerc();
var tilesToRequest = TileCover.GetWithWebMerc(_viewPortWebMercBounds, _map.AbsoluteZoom);
var activeTiles = _activeTiles.Keys.ToList();
List <UnwrappedTileId> toRemove = activeTiles.Except(tilesToRequest).ToList();
foreach (var t2r in toRemove)
{
RemoveTile(t2r);
}
var finalTilesNeeded = tilesToRequest.Except(activeTiles);
foreach (var tile in activeTiles)
{
// Reposition tiles in case we panned.
RepositionTile(tile);
}
foreach (var tile in finalTilesNeeded)
{
AddTile(tile);
}
}
}
void Update()
{
Vector2dBounds currentViewPortWebMercBnds = getcurrentViewPortWebMerc();
bool bboxChanged = !(_viewPortWebMercBounds.ToString() == currentViewPortWebMercBnds.ToString());
float cameraY = _referenceCamera.transform.localPosition.y;
//no zoom, no pan -> don't change tiles
if (cameraY == _previousY && !bboxChanged)
{
return;
}
_previousY = cameraY;
//camera moves within one zoom level, and no panning, don't do anything
if (
(cameraY > _cameraZoomingRangeMinY && cameraY < _cameraZoomingRangeMaxY) &&
!bboxChanged
)
{
//no changes, bail
return;
}
_viewPortWebMercBounds = currentViewPortWebMercBnds;
//panning
//TODO: move active tiles on pan
//HACK: just deactivate all active tiles
//!!!BEWARE!!!: don't compare Vector2d via '==' use 'Equals()'
if (!_previousWebMercCenter.Equals(_dynamicZoomMap.CenterMercator))
{
_previousWebMercCenter = _dynamicZoomMap.CenterMercator;
var remove = _activeTiles.Keys.ToList();
foreach (var r in remove)
{
RemoveTile(r);
}
}
Vector3 localPosition = _referenceCamera.transform.position;
//close to ground, zoom in
if (cameraY < _cameraZoomingRangeMinY)
{
//already at highest level, don't do anything -> camera free to move closer
if (_dynamicZoomMap.Zoom == _dynamicZoomMap.MaxZoom)
{
return;
}
_dynamicZoomMap.SetZoom(_dynamicZoomMap.Zoom + 1);
//reposition camera at max distance
localPosition.y = _cameraZoomingRangeMaxY;
_referenceCamera.transform.localPosition = localPosition;
}
//arrived at max distance, zoom out
else if (cameraY > _cameraZoomingRangeMaxY)
{
//already at lowest level, don't do anything -> camera free to move further away
if (_dynamicZoomMap.Zoom == _dynamicZoomMap.MinZoom)
{
return;
}
_dynamicZoomMap.SetZoom(_dynamicZoomMap.Zoom - 1);
//reposition camera at min distance
localPosition.y = _cameraZoomingRangeMinY;
_referenceCamera.transform.localPosition = localPosition;
}
//update viewport in case it was changed by switching zoom level
_viewPortWebMercBounds = getcurrentViewPortWebMerc();
var tilesNeeded = TileCover.GetWithWebMerc(_viewPortWebMercBounds, _dynamicZoomMap.Zoom);
var activeTiles = _activeTiles.Keys.ToList();
List <UnwrappedTileId> toRemove = activeTiles.Except(tilesNeeded).ToList();
foreach (var t2r in toRemove)
{
RemoveTile(t2r);
}
var finalTilesNeeded = tilesNeeded.Except(activeTiles);
foreach (var tile in finalTilesNeeded)
{
AddTile(tile);
}
}
