protected virtual void Split()
{
if (this.splitDepth <= maxSplit)
{
if (children == null)
{
LatLon leftMidpoint = LatLon.Average(BL, TL);
LatLon rightMidpoint = LatLon.Average(BR, TR);
LatLon topMidpoint = LatLon.Average(TL, TR);
LatLon bottomMidpoint = LatLon.Average(BL, BR);
TerrainNode bl = new TerrainNode(this, Quadrant.BL, BL, leftMidpoint, center, bottomMidpoint);
TerrainNode tl = new TerrainNode(this, Quadrant.TL, leftMidpoint, TL, topMidpoint, center);
TerrainNode tr = new TerrainNode(this, Quadrant.TR, center, topMidpoint, TR, rightMidpoint);
TerrainNode br = new TerrainNode(this, Quadrant.BR, bottomMidpoint, center, rightMidpoint, BR);
children = new TerrainNode[4]
{
bl, tl, tr, br
};
foreach (var child in children)
{
child.splitDepth = this.splitDepth + 1;
}
}
IsSplit = true;
}
}
private void findNodesToRender(List <TerrainNode> toRender, TerrainNode root, Camera camera)
{
if (root.IsVisible(camera))
{
if (root.IsSplit)
{
foreach (var child in root.Children)
{
findNodesToRender(toRender, child, camera);
}
}
else
{
//root.LastRendered = DateTime.Now;
toRender.Add(root);
}
}
}
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();
}
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();
}
protected TerrainNode(TerrainNode parent, Quadrant quad, LatLon bl, LatLon tl, LatLon tr, LatLon br, int splitD)
: this(parent, quad, bl, tl, tr, br)
{
this.splitDepth = splitD;
}
protected virtual void Split()
{
if (this.splitDepth <= maxSplit)
{
if (children == null)
{
LatLon leftMidpoint = LatLon.Average(BL, TL);
LatLon rightMidpoint = LatLon.Average(BR, TR);
LatLon topMidpoint = LatLon.Average(TL, TR);
LatLon bottomMidpoint = LatLon.Average(BL, BR);
TerrainNode bl = new TerrainNode(this, Quadrant.BL, BL, leftMidpoint, center, bottomMidpoint);
TerrainNode tl = new TerrainNode(this, Quadrant.TL, leftMidpoint, TL, topMidpoint, center);
TerrainNode tr = new TerrainNode(this, Quadrant.TR, center, topMidpoint, TR, rightMidpoint);
TerrainNode br = new TerrainNode(this, Quadrant.BR, bottomMidpoint, center, rightMidpoint, BR);
children = new TerrainNode[4]
{
bl, tl, tr, br
};
foreach (var child in children)
child.splitDepth = this.splitDepth + 1;
}
IsSplit = true;
}
}
private void findNodesToRender(List<TerrainNode> toRender, TerrainNode root, Camera camera)
{
if (root.IsVisible(camera))
{
if (root.IsSplit)
{
foreach (var child in root.Children)
findNodesToRender(toRender, child, camera);
}
else
{
//root.LastRendered = DateTime.Now;
toRender.Add(root);
}
}
}
protected TerrainNode(TerrainNode parent, Quadrant quad, LatLon bl, LatLon tl, LatLon tr, LatLon br, int splitD)
: this(parent, quad, bl, tl, tr, br)
{
this.splitDepth = splitD;
}
