/// <summary>
/// Tests if the bounding box specified intersects with or is fully contained in the frustum.
/// </summary>
/// <returns>true when the box intersects with the frustum.</returns>
public bool Intersects(BoundingBox bb)
{
Point3d v;
// Optimize by always checking bounding sphere first
if (!IntersectsOne(bb.boundsphere))
return false;
foreach (Plane2d p in this.planes)
{
v.X = p.A;
v.Y = p.B;
v.Z = p.C;
bool isInside = false;
for(int i = 0; i < 8; i++)
{
if(Point3d.dot(v, bb.corners[i]) + p.D >= 0)
{
isInside = true;
break;
}
}
if(!isInside)
return false;
}
return true;
}
/// <summary>
/// Tests if the view frustum fully contains the bounding box.
/// </summary>
/// <returns>true when the box is complete enclosed by the frustum.</returns>
public bool Contains(BoundingBox bb)
{
//Code taken from Flip Code Article:
// http://www.flipcode.com/articles/article_frustumculling.shtml
int iTotalIn = 0;
foreach (Plane p in this.planes) {
int iInCount = 8;
int iPtIn = 1;
// TODO: Modify bounding box and only check 2 corners.
for (int i = 0; i < 8; i++) {
if (Vector3.Dot(new Vector3(p.A, p.B, p.C), bb.corners[i]) + p.D < 0) {
iPtIn = 0;
--iInCount;
}
}
if (iInCount == 0) {
return false;
}
iTotalIn += iPtIn;
}
if (iTotalIn == 6) {
return true;
}
return false;
}
internal ProjectedVectorTile(
GeographicBoundingBox geographicBoundingBox,
ProjectedVectorRenderer parentLayer
)
{
m_geographicBoundingBox = geographicBoundingBox;
m_parentProjectedLayer = parentLayer;
BoundingBox = new BoundingBox( (float)geographicBoundingBox.South, (float)geographicBoundingBox.North, (float)geographicBoundingBox.West, (float)geographicBoundingBox.East,
(float)(parentLayer.World.EquatorialRadius + geographicBoundingBox.MinimumAltitude), (float)(parentLayer.World.EquatorialRadius + geographicBoundingBox.MaximumAltitude + 300000f));
}
public ShapeTile(
GeographicBoundingBox geoBB,
ShapeTileArgs shapeTileArgs
)
{
m_GeoBB = geoBB;
m_ShapeTileArgs = shapeTileArgs;
BoundingBox = new BoundingBox( (float)geoBB.South, (float)geoBB.North, (float)geoBB.West, (float)geoBB.East,
(float)m_ShapeTileArgs.LayerRadius, (float)m_ShapeTileArgs.LayerRadius + 300000f);
}
Vector3[] sphericalCoordinates = new Vector3[0]; // x = lat, y = lon, z = height
/// <summary>
/// Initializes a new instance of the <see cref= "T:WorldWind.Renderable.PathLine"/> class.
/// </summary>
/// <param name="name"></param>
/// <param name="parentWorld"></param>
/// <param name="terrainfileName"></param>
/// <param name="heightAboveSurface"></param>
/// <param name="lineColor"></param>
public PathLine(string name, World parentWorld, string terrainfileName, float heightAboveSurface,
System.Drawing.Color lineColor)
: base(name, parentWorld.Position, Quaternion.RotationYawPitchRoll(0,0,0))
{
this._parentWorld = parentWorld;
//this.terrainManager = terrainManager;
this.terrainFileName = terrainfileName;
this.heightAboveSurface = heightAboveSurface;
this.lineColor = lineColor.ToArgb();
if(this.terrainFileName == null)
{
this.isInitialized = true;
this.isLoaded = true;
this.linePoints = new CustomVertex.PositionColored[0];
return;
}
FileInfo inFile = new FileInfo(this.terrainFileName);
if(!inFile.Exists)
{
this.isInitialized = true;
this.isLoaded = true;
this.linePoints = new CustomVertex.PositionColored[0];
return;
}
if(inFile.FullName.IndexOf('_') == -1)
{
return;
}
string[] parsedFileName = inFile.Name.Replace(".wwb","").Split('_');
if(parsedFileName.Length < 5)
{
return;
}
else
{
this.north = (float)Int32.Parse(parsedFileName[1], CultureInfo.InvariantCulture);
this.south = (float)Int32.Parse(parsedFileName[2], CultureInfo.InvariantCulture);
this.west = (float)Int32.Parse(parsedFileName[3], CultureInfo.InvariantCulture);
this.east = (float)Int32.Parse(parsedFileName[4], CultureInfo.InvariantCulture);
}
this.boundingBox = new BoundingBox( this.south, this.north, this.west, this.east,
(float)this._parentWorld.EquatorialRadius,
(float)this._parentWorld.EquatorialRadius + this.heightAboveSurface );
}
public void AddPointToPath(float lat, float lon, float alt)
{
Vector3 newCoord = new Vector3(lat, lon, alt);
this.sphericalCoordinates.Add(newCoord);
if (this.north < newCoord.X)
this.north = newCoord.X;
if (this.east < newCoord.Y)
this.east = newCoord.Y;
if (this.south > newCoord.X)
this.south = newCoord.X;
if (this.west > newCoord.Y)
this.west = newCoord.Y;
this.boundingBox = new BoundingBox( this.south, this.north, this.west, this.east,
(float)this._parentWorld.EquatorialRadius,
(float)(this._parentWorld.EquatorialRadius + this.verticalExaggeration * alt));
lastUpdatedPosition.X = lat;
this.isLoaded = true;
this.isInitialized = false;
this.m_needsUpdate = true;
}
public void Load(DrawArgs drawArgs)
{
try
{
#region JHU CHANGES
if (this.sphericalCoordinates == null)
this.sphericalCoordinates = new ArrayList();
#endregion
if(this._dataArchiveReader == null)
{
if(this.terrainFileName == null)
{
this.isInitialized = true;
return;
}
FileInfo inFile = new FileInfo(this.terrainFileName);
if(!inFile.Exists)
{
this.isInitialized = true;
return;
}
using( BufferedStream fs = new BufferedStream(inFile.OpenRead()) )
using( BinaryReader br = new BinaryReader(fs) )
{
int numCoords = br.ReadInt32();
#region JHU CHANGES
// this.sphericalCoordinates = new Vector3[numCoords];
// this.sphericalCoordinates[0].X = br.ReadSingle();
// this.sphericalCoordinates[0].Y = br.ReadSingle();
//
// this.north = this.sphericalCoordinates[0].X;
// this.south = this.sphericalCoordinates[0].X;
// this.west = this.sphericalCoordinates[0].Y;
// this.east = this.sphericalCoordinates[0].Y;
Vector3 newCoord = new Vector3();
newCoord.X = br.ReadSingle();
newCoord.Y = br.ReadSingle();
sphericalCoordinates.Add(newCoord);
for (int i = 1; i < numCoords; i++)
{
// this.sphericalCoordinates[i].X = br.ReadSingle();
// this.sphericalCoordinates[i].Y = br.ReadSingle();
//
// if (this.north < this.sphericalCoordinates[i].X)
// this.north = this.sphericalCoordinates[i].X;
// if (this.east < this.sphericalCoordinates[i].Y)
// this.east = this.sphericalCoordinates[i].Y;
// if (this.south > this.sphericalCoordinates[i].X)
// this.south = this.sphericalCoordinates[i].X;
// if (this.west > this.sphericalCoordinates[i].Y)
// this.west = this.sphericalCoordinates[i].Y;
newCoord.X = br.ReadSingle();
newCoord.Y = br.ReadSingle();
sphericalCoordinates.Add(newCoord);
if (this.north < newCoord.X)
this.north = newCoord.X;
if (this.east < newCoord.Y)
this.east = newCoord.Y;
if (this.south > newCoord.X)
this.south = newCoord.X;
if (this.west > newCoord.Y)
this.west = newCoord.Y;
}
#endregion
}
this.boundingBox = new BoundingBox( this.south, this.north, this.west, this.east,
(float)this._parentWorld.EquatorialRadius,
(float)(this._parentWorld.EquatorialRadius + this.verticalExaggeration * heightAboveSurface));
}
else
{
this._dataArchiveReader.BaseStream.Seek(this._fileOffset, SeekOrigin.Begin);
int numCoords = this._dataArchiveReader.ReadInt32();
byte numElements = this._dataArchiveReader.ReadByte();
#region JHU CHANGES
// this.sphericalCoordinates = new Vector3[numCoords];
Vector3 newCoord = new Vector3();
for(int i = 0; i < numCoords; i++)
{
// this.sphericalCoordinates[i].X = (float)this._dataArchiveReader.ReadDouble();
// this.sphericalCoordinates[i].Y = (float)this._dataArchiveReader.ReadDouble();
// if(numElements == 3)
// this.sphericalCoordinates[i].Z = this._dataArchiveReader.ReadInt16();
newCoord.X = (float)this._dataArchiveReader.ReadDouble();
newCoord.Y = (float)this._dataArchiveReader.ReadDouble();
if(numElements == 3)
newCoord.Z = this._dataArchiveReader.ReadInt16();
sphericalCoordinates.Add(newCoord);
}
#endregion
}
}
catch(Exception caught)
{
Log.Write( caught );
}
this.isLoaded = true;
}
/// <summary>
/// Initializes a new instance of the <see cref= "T:WorldWind.Renderable.TerrainPath"/> class.
/// </summary>
/// <param name="name"></param>
/// <param name="parentWorld"></param>
/// <param name="minDisplayAltitude"></param>
/// <param name="maxDisplayAltitude"></param>
/// <param name="dataArchiveReader"></param>
/// <param name="fileOffset"></param>
/// <param name="fileSize"></param>
/// <param name="north"></param>
/// <param name="south"></param>
/// <param name="east"></param>
/// <param name="west"></param>
/// <param name="heightAboveSurface"></param>
/// <param name="lineColor"></param>
/// <param name="terrainAccessor"></param>
public JHU_TerrainPath(
string name,
World parentWorld,
double minDisplayAltitude,
double maxDisplayAltitude,
BinaryReader dataArchiveReader,
long fileOffset,
long fileSize,
double north,
double south,
double east,
double west,
float heightAboveSurface,
System.Drawing.Color lineColor,
TerrainAccessor terrainAccessor)
: base(name, parentWorld.Position, Quaternion.RotationYawPitchRoll(0,0,0))
{
this._parentWorld = parentWorld;
this._minDisplayAltitude = minDisplayAltitude;
this._maxDisplayAltitude = maxDisplayAltitude;
this._dataArchiveReader = dataArchiveReader;
this._fileOffset = fileOffset;
this._fileSize = fileSize;
this.heightAboveSurface = heightAboveSurface;
this.lineColor = lineColor.ToArgb();
this._terrainAccessor = terrainAccessor;
this.sphericalCoordinates = new ArrayList();
this.north = (float)north;
this.south = (float)south;
this.west = (float)west;
this.east = (float)east;
this.RenderPriority = RenderPriority.LinePaths;
this.boundingBox = new BoundingBox( this.south, this.north, this.west, this.east,
(float)this._parentWorld.EquatorialRadius,
(float)(this._parentWorld.EquatorialRadius + this.verticalExaggeration * heightAboveSurface));
}
/// <summary>
/// Tests if the bounding box specified intersects with or is fully contained in the frustum.
/// </summary>
/// <returns>true when the box intersects with the frustum.</returns>
public bool Intersects(BoundingBox bb)
{
foreach(Plane p in this.planes)
{
Vector3 v = new Vector3(p.A,p.B,p.C);
bool isInside = false;
// TODO: Modify bounding box and only check 2 corners.
for(int i = 0; i < 8; i++)
{
if(Vector3.Dot(v, bb.corners[i]) + p.D >= 0)
{
isInside = true;
break;
}
}
if(!isInside)
return false;
}
return true;
}
public PolygonFeature(
string name,
World parentWorld,
LinearRing outerRing,
LinearRing[] innerRings,
System.Drawing.Color polygonColor) : base(name, parentWorld)
{
RenderPriority = WorldWind.Renderable.RenderPriority.LinePaths;
m_outerRing = outerRing;
m_innerRings = innerRings;
m_polygonColor = polygonColor;
double minY = double.MaxValue;
double maxY = double.MinValue;
double minX = double.MaxValue;
double maxX = double.MinValue;
double minZ = double.MaxValue;
double maxZ = double.MinValue;
for(int i = 0; i < m_outerRing.Points.Length; i++)
{
if(m_outerRing.Points[i].X < minX)
minX = m_outerRing.Points[i].X;
if(m_outerRing.Points[i].X > maxX)
maxX = m_outerRing.Points[i].X;
if(m_outerRing.Points[i].Y < minY)
minY = m_outerRing.Points[i].Y;
if(m_outerRing.Points[i].Y > maxY)
maxY = m_outerRing.Points[i].Y;
if(m_outerRing.Points[i].Z < minZ)
minZ = m_outerRing.Points[i].Z;
if(m_outerRing.Points[i].Z > maxZ)
maxZ = m_outerRing.Points[i].Z;
}
// set a uniform Z for all the points
for(int i = 0; i < m_outerRing.Points.Length; i++)
{
if(m_outerRing.Points[i].Z != maxZ)
m_outerRing.Points[i].Z = maxZ;
}
if(m_innerRings != null && m_innerRings.Length > 0)
{
for(int n = 0; n < m_innerRings.Length; n++)
{
for(int i = 0; i < m_innerRings[n].Points.Length; i++)
{
if(m_innerRings[n].Points[i].Z != maxZ)
m_innerRings[n].Points[i].Z = maxZ;
}
}
}
m_geographicBoundingBox = new GeographicBoundingBox(maxY, minY, minX, maxX, minZ, maxZ);
minZ += parentWorld.EquatorialRadius;
maxZ += parentWorld.EquatorialRadius;
BoundingBox = new BoundingBox(
(float)minY, (float)maxY, (float)minX, (float)maxX, (float)minZ, (float)maxZ);
}
/// <summary>
/// Creates a new <see cref="SurfaceTile"/> instance.
/// </summary>
/// <param name="north">North. (in degrees)</param>
/// <param name="south">South. (in degrees)</param>
/// <param name="west">West. (in degrees)</param>
/// <param name="east">East. (in degrees)</param>
/// <param name="level">Level.</param>
/// <param name="parentWorldSurfaceRenderer">Parent world surface renderer.</param>
public SurfaceTile(double north, double south, double west, double east, int level, WorldSurfaceRenderer parentWorldSurfaceRenderer)
{
m_North = north;
m_South = south;
m_West = west;
m_East = east;
m_Level = level;
m_ParentWorldSurfaceRenderer = parentWorldSurfaceRenderer;
float scale = 1.1f;
Vector3 v = MathEngine.SphericalToCartesian(Angle.FromDegrees(south), Angle.FromDegrees(west), m_ParentWorldSurfaceRenderer.ParentWorld.EquatorialRadius + m_ParentWorldSurfaceRenderer.DistanceAboveSeaLevel);
Vector3 v0 = new Vector3((float) v.X, (float) v.Y, (float) v.Z);
Vector3 v1 = Vector3.Scale(v0, scale);
v = MathEngine.SphericalToCartesian(Angle.FromDegrees(south), Angle.FromDegrees(east), m_ParentWorldSurfaceRenderer.ParentWorld.EquatorialRadius + m_ParentWorldSurfaceRenderer.DistanceAboveSeaLevel);
Vector3 v2 = new Vector3((float) v.X, (float) v.Y, (float) v.Z);
Vector3 v3 = Vector3.Scale(v2, scale);
v = MathEngine.SphericalToCartesian(Angle.FromDegrees(north), Angle.FromDegrees(west), m_ParentWorldSurfaceRenderer.ParentWorld.EquatorialRadius + m_ParentWorldSurfaceRenderer.DistanceAboveSeaLevel);
Vector3 v4 = new Vector3((float) v.X, (float) v.Y, (float) v.Z);
Vector3 v5 = Vector3.Scale(v4, scale);
v = MathEngine.SphericalToCartesian(Angle.FromDegrees(north), Angle.FromDegrees(east), m_ParentWorldSurfaceRenderer.ParentWorld.EquatorialRadius + m_ParentWorldSurfaceRenderer.DistanceAboveSeaLevel);
Vector3 v6 = new Vector3((float) v.X, (float) v.Y, (float) v.Z);
Vector3 v7 = Vector3.Scale(v6, scale);
m_BoundingBox = new BoundingBox(v0, v1, v2, v3, v4, v5, v6, v7);
int thisVertexDensityElevatedPlus2 = ((int) m_ParentWorldSurfaceRenderer.SamplesPerTile/2 + 2);
m_IndicesElevated = new short[2*thisVertexDensityElevatedPlus2*thisVertexDensityElevatedPlus2*3];
for (int i = 0; i < thisVertexDensityElevatedPlus2; i++) {
int elevated_idx = (2*3*i*thisVertexDensityElevatedPlus2);
for (int j = 0; j < thisVertexDensityElevatedPlus2; j++) {
m_IndicesElevated[elevated_idx] = (short) (i*(thisVertexDensityElevatedPlus2 + 1) + j);
m_IndicesElevated[elevated_idx + 1] = (short) ((i + 1)*(thisVertexDensityElevatedPlus2 + 1) + j);
m_IndicesElevated[elevated_idx + 2] = (short) (i*(thisVertexDensityElevatedPlus2 + 1) + j + 1);
m_IndicesElevated[elevated_idx + 3] = (short) (i*(thisVertexDensityElevatedPlus2 + 1) + j + 1);
m_IndicesElevated[elevated_idx + 4] = (short) ((i + 1)*(thisVertexDensityElevatedPlus2 + 1) + j);
m_IndicesElevated[elevated_idx + 5] = (short) ((i + 1)*(thisVertexDensityElevatedPlus2 + 1) + j + 1);
elevated_idx += 6;
}
}
}
/// <summary>
/// Disposes this instance. Releases any resources from the graphics device, also disposes of "child" surface tiles.
/// </summary>
public void Dispose()
{
m_Initialized = false;
m_BoundingBox = null;
if (m_Device != null) {
m_Device.DeviceReset -= new EventHandler(OnDeviceReset);
m_Device.Disposing -= new EventHandler(OnDeviceDispose);
OnDeviceDispose(m_Device, null);
}
if (m_NorthWestChild != null) {
m_NorthWestChild.Dispose();
m_NorthWestChild = null;
}
if (m_NorthEastChild != null) {
m_NorthEastChild.Dispose();
m_NorthEastChild = null;
}
if (m_SouthWestChild != null) {
m_SouthWestChild.Dispose();
m_SouthWestChild = null;
}
if (m_SouthEastChild != null) {
m_SouthEastChild.Dispose();
m_SouthEastChild = null;
}
}
/// <summary>
/// Build the elevated terrain mesh
/// </summary>
protected virtual void CreateElevatedMesh()
{
isDownloadingTerrain = true;
// Get height data with one extra sample around the tile
double degreePerSample = LatitudeSpan / vertexCountElevated;
TerrainTile tile =
quadTileSet.World.TerrainAccessor.GetElevationArray(north + degreePerSample, south - degreePerSample,
west - degreePerSample, east + degreePerSample,
vertexCountElevated + 3);
float[,] heightData = tile.ElevationData;
int vertexCountElevatedPlus3 = vertexCountElevated / 2 + 3;
int totalVertexCount = vertexCountElevatedPlus3 * vertexCountElevatedPlus3;
northWestVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
southWestVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
northEastVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
southEastVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
double layerRadius = (double)quadTileSet.LayerRadius;
// Calculate mesh base radius (bottom vertices)
// Find minimum elevation to account for possible bathymetry
float minimumElevation = float.MaxValue;
float maximumElevation = float.MinValue;
foreach (float height in heightData)
{
if (height < minimumElevation)
minimumElevation = height;
if (height > maximumElevation)
maximumElevation = height;
}
minimumElevation *= verticalExaggeration;
maximumElevation *= verticalExaggeration;
if (minimumElevation > maximumElevation)
{
// Compensate for negative vertical exaggeration
minimumElevation = maximumElevation;
maximumElevation = minimumElevation;
}
CreateElevatedMesh(ChildLocation.NorthWest, northWestVertices, heightData);
CreateElevatedMesh(ChildLocation.SouthWest, southWestVertices, heightData);
CreateElevatedMesh(ChildLocation.NorthEast, northEastVertices, heightData);
CreateElevatedMesh(ChildLocation.SouthEast, southEastVertices, heightData);
// --- Make bounding box slightly larger so the tile won't blink in and out near the edges ---
BoundingBox = new BoundingBox(south - 1.0, north + 1.0, west - 1.0, east + 1.0, layerRadius, layerRadius + 10000.0 * this.verticalExaggeration);
quadTileSet.IsDownloadingElevation = false;
// Build common set of indexes for the 4 child meshes
int vertexCountElevatedPlus2 = vertexCountElevated / 2 + 2;
vertexIndexes = new short[2 * vertexCountElevatedPlus2 * vertexCountElevatedPlus2 * 3];
int elevated_idx = 0;
for (int i = 0; i < vertexCountElevatedPlus2; i++)
{
for (int j = 0; j < vertexCountElevatedPlus2; j++)
{
vertexIndexes[elevated_idx++] = (short)(i * vertexCountElevatedPlus3 + j);
vertexIndexes[elevated_idx++] = (short)((i + 1) * vertexCountElevatedPlus3 + j);
vertexIndexes[elevated_idx++] = (short)(i * vertexCountElevatedPlus3 + j + 1);
vertexIndexes[elevated_idx++] = (short)(i * vertexCountElevatedPlus3 + j + 1);
vertexIndexes[elevated_idx++] = (short)((i + 1) * vertexCountElevatedPlus3 + j);
vertexIndexes[elevated_idx++] = (short)((i + 1) * vertexCountElevatedPlus3 + j + 1);
}
}
calculate_normals(ref northWestVertices, vertexIndexes);
calculate_normals(ref southWestVertices, vertexIndexes);
calculate_normals(ref northEastVertices, vertexIndexes);
calculate_normals(ref southEastVertices, vertexIndexes);
isDownloadingTerrain = false;
}
// End New Cache
/// <summary>
/// Initializes a new instance of the <see cref= "T:WorldWind.Renderable.QuadTile"/> class.
/// </summary>
/// <param name="_south"></param>
/// <param name="_north"></param>
/// <param name="_west"></param>
/// <param name="_east"></param>
/// <param name="_level"></param>
/// <param name="quadTileSet"></param>
internal QuadTile(double _south, double _north, double _west, double _east, int _level, QuadTileSet quadTileSet)
{
this.south = _south;
this.north = _north;
this.west = _west;
this.east = _east;
centerLatitude = Angle.FromDegrees(0.5f * (north + south));
centerLongitude = Angle.FromDegrees(0.5f * (west + east));
LatitudeSpan = Math.Abs(north - south);
LongitudeSpan = Math.Abs(east - west);
this.level = _level;
this.quadTileSet = quadTileSet;
// --- Make bounding box slightly larger so the tile won't blink in and out near the edges ---
BoundingBox = new BoundingBox(south - LatitudeSpan / 8.0, north + LatitudeSpan / 8.0, west - LongitudeSpan / 8.0, east + LongitudeSpan / 8.0, quadTileSet.LayerRadius, quadTileSet.LayerRadius + 300000.0);
//localOrigin = BoundingBox.CalculateCenter();
localOrigin = MathEngine.SphericalToCartesian(centerLatitude, centerLongitude, quadTileSet.LayerRadius);
// To avoid gaps between neighbouring tiles truncate the origin to
// a number that doesn't get rounded. (nearest 10km)
localOrigin.X = (float)(Math.Round(localOrigin.X / 10000) * 10000);
localOrigin.Y = (float)(Math.Round(localOrigin.Y / 10000) * 10000);
localOrigin.Z = (float)(Math.Round(localOrigin.Z / 10000) * 10000);
row = MathEngine.GetRowFromLatitude((north + south) / 2.0, north - south);
col = MathEngine.GetColFromLongitude((east + west) / 2.0, east - west);
downloadRequests = new List<GeoSpatialDownloadRequest>();
key = string.Format("{0,4}", this.level)
+ "_"
+ string.Format("{0,4}", this.col)
+ string.Format("{0,4}", this.row)
+ this.quadTileSet.Name
+ this.quadTileSet.ParentList.Name;
quadTileSet.ImageStores[0].GetProjectionCorners(this, out UL, out UR, out LL, out LR);
}
public void Load()
{
try
{
if(this.terrainFileName == null && this._dataArchiveReader == null)
{
this.isInitialized = true;
return;
}
sphericalCoordinates = GetSphericalCoordinates(ref north, ref south, ref west, ref east);
this.boundingBox = new BoundingBox( this.south, this.north, this.west, this.east,
(float)this._parentWorld.EquatorialRadius,
(float)(this._parentWorld.EquatorialRadius + this.verticalExaggeration * heightAboveSurface));
}
catch(Exception caught)
{
Log.Write( caught );
}
this.isLoaded = true;
}