/// <summary>
/// Transforms the corners of this node to world space
/// </summary>
/// <returns></returns>
protected virtual Vector3D[] transformCorners()
{
Vector3D[] transformed = new Vector3D[4];
Vector3D[] cartesianCorners = corners.Select(latlon => RenderWGS84.ToWorld(latlon.Latitude, latlon.Longitude)).ToArray();
for (int i = 0; i < cartesianCorners.Length; i++)
{
Vector3D normalized;
Vector3D.Normalize(ref cartesianCorners[i], out normalized);
transformed[i] = normalized * RenderWGS84.EarthRadius;
}
return(transformed);
}
public TerrainNode(TerrainNode parent, Quadrant quad, LatLon bl, LatLon tl, LatLon tr, LatLon br)
{
Parent = parent;
Quadrant = quad;
corners = new LatLon[4]
{
bl, tl, tr, br
};
latLonExtents = new Extent(BL.Longitude, BL.Latitude, TR.Longitude, TR.Latitude);
var mercBL = RenderWGS84.ToGoogleBing(BL.Longitude, BL.Latitude);
var mercTR = RenderWGS84.ToGoogleBing(TR.Longitude, TR.Latitude);
meterExtents = new Extent(mercBL.X, mercBL.Y, mercTR.X, mercTR.Y);
center = LatLon.Average(corners);
splitDepth = 0;
Vector3D[] transformed = transformCorners();
this.aabb = BoundingBox.FromPoints(transformed.Select(vec => vec.ToVector3()).ToArray());
generateSplitBox();
}
