private void UpdateMapTexture(CombinedMapData mapToUpdate, double elevation)
{
CombinedMapData expectedMap = mapFactory.CreateEmptyMapAtLocation(mapToUpdate.BottomLeftLocation, elevation, mapToUpdate.ShapeDelta);
expectedMap.ZoomLevel = currentZoomLevel;
if (!expectedMap.IsSameTexture(mapToUpdate))
{
mapToUpdate.ZoomLevel = expectedMap.ZoomLevel;
mapFactory.UpdateMapTexture(mapToUpdate);
}
}
private CombinedMapData SwapTileToNewLocation(CombinedMapData prevTile, LatLong newLocation)
{
CombinedMapData newTile = new CombinedMapData(prevTile);
newTile.BottomLeftLocation = newLocation;
mapFactory.RetrieveOrUpdateMapTerrain(newTile);
AddTileToEngine(newTile);
RemoveTileFromEngine(prevTile);
UpdateMapTexture(newTile, currentElevation);
return newTile;
}
private bool TerrainUpdateRequired(CombinedMapData currentMap, CombinedMapData expectedMap)
{
if (currentMap == null) return true;
if (expectedMap.IsSameShape(currentMap)) return false;
return true;
}
private void AddTileToEngine(CombinedMapData tile)
{
ShapeChangeEventArgs e = new ShapeChangeEventArgs(tile, ShapeChangeEventArgs.ChangeAction.Add);
FireMapChangedEvent(e);
}
private void RemoveTileFromEngine(CombinedMapData tile)
{
ShapeChangeEventArgs se = new ShapeChangeEventArgs(tile, ShapeChangeEventArgs.ChangeAction.Remove);
FireMapChangedEvent(se);
}
public CombinedMapData CreateEmptyMapAtLocation(LatLong location, double elevation, double delta)
{
CombinedMapData newMap = new CombinedMapData();
newMap.ShapeDelta = delta;
newMap.BottomLeftLocation = location;
newMap.ZoomLevel = EarthProjection.GetZoomFromElevation(elevation);
return newMap;
}
private void AddTileToArray(CombinedMapData tile, int row, int column)
{
tile.TextureIndex = row * TILE_COUNT + column + Earth3DControl.TEXTURE_OFFSET;
CombinedMapData previousTile = currentTiles[row, column];
if (previousTile == tile)
{
return;
}
currentTiles[row, column] = tile;
AddTileToEngine(tile);
}
public void UpdateMapTerrain(CombinedMapData mapToUpdate)
{
MapDescriptor desc = mapToUpdate.GetMapDescriptor();
if (!TerrainToProcess.Contains(desc))
{
desc.Tag = mapToUpdate;
TerrainToProcess.Enqueue(desc);
}
}
public void UpdateMapTexture(CombinedMapData mapToUpdate)
{
if (mapToUpdate.ZoomLevel > EarthTiles.MaxGoogleZoom) mapToUpdate.ZoomLevel = EarthTiles.MaxGoogleZoom;
MapDescriptor desc = mapToUpdate.GetMapDescriptor();
if (!TexturesToProcess.Contains(desc))
TexturesToProcess.Enqueue(desc);
}
public void RetrieveOrUpdateMapTerrain(CombinedMapData newMap)
{
MapDescriptor md = new MapDescriptor(
newMap.BottomLeftLocation.Latitude,
newMap.BottomLeftLocation.Longitude,
newMap.ZoomLevel,
newMap.ShapeDelta);
if(previouslyCreatedTerrain.ContainsKey(md))
{
newMap.CopyShapeFrom(previouslyCreatedTerrain[md]);
FireMapUpdateCompletedEvent(new ShapeChangeEventArgs(newMap, ShapeChangeEventArgs.ChangeAction.Add));
}
else
{
UpdateMapTerrain(newMap);
}
}
public bool IsSameShape(CombinedMapData other)
{
if (!other.ShapeDelta.Equals(this.ShapeDelta)) return false;
if (!other.BottomLeftLocation.Equals(this.BottomLeftLocation)) return false;
return true;
}
public bool Equals(CombinedMapData other)
{
if (!other.GetMapDescriptor().Equals(desc)) return false;
if (other.TextureMipMaps != this.TextureMipMaps) return false;
return base.Equals(other);
}
public CombinedMapData(CombinedMapData copy)
: this()
{
desc = new MapDescriptor(copy.BottomLeftLocation.Latitude, copy.BottomLeftLocation.Longitude, copy.ZoomLevel, copy.ShapeDelta);
this.TextureIndex = copy.TextureIndex;
}
public bool IsSameTexture(CombinedMapData other)
{
if (other.ShapeDelta != this.ShapeDelta) return false;
if (!other.BottomLeftLocation.Equals(this.BottomLeftLocation)) return false;
if (other.ZoomLevel != this.ZoomLevel) return false;
if (other.TextureImage == null) return false;
return true;
}