protected virtual void CreateMesh(GeographicBoundingBox geographicBoundingBox, int meshPointCount, ref CustomVertex.PositionColoredTextured[] vertices, ref short[] indices)
{
int upperBound = meshPointCount - 1;
float scaleFactor = (float)1 / upperBound;
double latrange = Math.Abs(geographicBoundingBox.North - geographicBoundingBox.South);
double lonrange;
if (geographicBoundingBox.West < geographicBoundingBox.East)
{
lonrange = geographicBoundingBox.East - geographicBoundingBox.West;
}
else
{
lonrange = 360.0f + geographicBoundingBox.East - geographicBoundingBox.West;
}
double layerRadius = this.m_parentProjectedLayer.World.EquatorialRadius;
int opacityColor = Color.FromArgb(
//m_parentProjectedLayer.Opacity,
0, 0, 0).ToArgb();
vertices = new CustomVertex.PositionColoredTextured[meshPointCount * meshPointCount];
for (int i = 0; i < meshPointCount; i++)
{
for (int j = 0; j < meshPointCount; j++)
{
double height = 0;
if (this.m_parentProjectedLayer.World.TerrainAccessor != null)
{
height = this.m_verticalExaggeration * this.m_parentProjectedLayer.World.TerrainAccessor.GetElevationAt(
(double)geographicBoundingBox.North - scaleFactor * latrange * i,
(double)geographicBoundingBox.West + scaleFactor * lonrange * j,
(double)upperBound / latrange);
}
Vector3 pos = MathEngine.SphericalToCartesian(
geographicBoundingBox.North - scaleFactor * latrange * i,
geographicBoundingBox.West + scaleFactor * lonrange * j,
layerRadius + height);
vertices[i * meshPointCount + j].X = pos.X;
vertices[i * meshPointCount + j].Y = pos.Y;
vertices[i * meshPointCount + j].Z = pos.Z;
vertices[i * meshPointCount + j].Tu = j * scaleFactor;
vertices[i * meshPointCount + j].Tv = i * scaleFactor;
vertices[i * meshPointCount + j].Color = opacityColor;
}
}
indices = new short[2 * upperBound * upperBound * 3];
for (int i = 0; i < upperBound; i++)
{
for (int j = 0; j < upperBound; j++)
{
indices[(2 * 3 * i * upperBound) + 6 * j] = (short)(i * meshPointCount + j);
indices[(2 * 3 * i * upperBound) + 6 * j + 1] = (short)((i + 1) * meshPointCount + j);
indices[(2 * 3 * i * upperBound) + 6 * j + 2] = (short)(i * meshPointCount + j + 1);
indices[(2 * 3 * i * upperBound) + 6 * j + 3] = (short)(i * meshPointCount + j + 1);
indices[(2 * 3 * i * upperBound) + 6 * j + 4] = (short)((i + 1) * meshPointCount + j);
indices[(2 * 3 * i * upperBound) + 6 * j + 5] = (short)((i + 1) * meshPointCount + j + 1);
}
}
}
public void Update(DrawArgs drawArgs)
{
try
{
double centerLatitude = 0.5 * (this.m_geographicBoundingBox.North + this.m_geographicBoundingBox.South);
double centerLongitude = 0.5 * (this.m_geographicBoundingBox.West + this.m_geographicBoundingBox.East);
double tileSize = this.m_geographicBoundingBox.North - this.m_geographicBoundingBox.South;
if (!this.m_Initialized)
{
if (drawArgs.WorldCamera.ViewRange * 0.5f < Angle.FromDegrees(ShapeTileArgs.TileDrawDistance * tileSize) &&
MathEngine.SphericalDistance(Angle.FromDegrees(centerLatitude), Angle.FromDegrees(centerLongitude),
drawArgs.WorldCamera.Latitude, drawArgs.WorldCamera.Longitude) < Angle.FromDegrees(ShapeTileArgs.TileSpreadFactor * tileSize * 1.25f) &&
drawArgs.WorldCamera.ViewFrustum.Intersects(this.BoundingBox)
)
{
this.Initialize(drawArgs);
}
}
if (this.m_Initialized)
{
if (this.m_LastUpdate < this.m_parentProjectedLayer.LastUpdate)
{
this.UpdateImageLayers(drawArgs);
}
if (this.m_NwImageLayer != null)
{
this.m_NwImageLayer.Update(drawArgs);
}
if (this.m_NeImageLayer != null)
{
this.m_NeImageLayer.Update(drawArgs);
}
if (this.m_SwImageLayer != null)
{
this.m_SwImageLayer.Update(drawArgs);
}
if (this.m_SeImageLayer != null)
{
this.m_SeImageLayer.Update(drawArgs);
}
if (
drawArgs.WorldCamera.ViewRange < Angle.FromDegrees(ShapeTileArgs.TileDrawDistance * tileSize) &&
MathEngine.SphericalDistance(Angle.FromDegrees(centerLatitude), Angle.FromDegrees(centerLongitude),
drawArgs.WorldCamera.Latitude, drawArgs.WorldCamera.Longitude) < Angle.FromDegrees(ShapeTileArgs.TileSpreadFactor * tileSize) &&
drawArgs.WorldCamera.ViewFrustum.Intersects(this.BoundingBox)
)
{
if (this.m_NorthEastChild == null && this.m_NorthWestChild == null && this.m_SouthEastChild == null && this.m_SouthWestChild == null)
{
this.ComputeChildren(drawArgs);
}
else
{
if (this.m_NorthEastChild != null)
{
this.m_NorthEastChild.Update(drawArgs);
}
if (this.m_NorthWestChild != null)
{
this.m_NorthWestChild.Update(drawArgs);
}
if (this.m_SouthEastChild != null)
{
this.m_SouthEastChild.Update(drawArgs);
}
if (this.m_SouthWestChild != null)
{
this.m_SouthWestChild.Update(drawArgs);
}
}
}
else
{
if (this.m_NorthWestChild != null)
{
this.m_NorthWestChild.Dispose();
this.m_NorthWestChild = null;
}
if (this.m_NorthEastChild != null)
{
this.m_NorthEastChild.Dispose();
this.m_NorthEastChild = null;
}
if (this.m_SouthEastChild != null)
{
this.m_SouthEastChild.Dispose();
this.m_SouthEastChild = null;
}
if (this.m_SouthWestChild != null)
{
this.m_SouthWestChild.Dispose();
this.m_SouthWestChild = null;
}
}
}
if (this.m_Initialized)
{
if (drawArgs.WorldCamera.ViewRange > Angle.FromDegrees(ShapeTileArgs.TileDrawDistance * tileSize * 1.5f) ||
MathEngine.SphericalDistance(Angle.FromDegrees(centerLatitude), Angle.FromDegrees(centerLongitude), drawArgs.WorldCamera.Latitude, drawArgs.WorldCamera.Longitude) > Angle.FromDegrees(ShapeTileArgs.TileSpreadFactor * tileSize * 1.5f))
{
if (this.Level != 0)
{
//{
this.Dispose();
}
//}
}
}
}
catch (Exception ex)
{
Log.Write(ex);
}
}
private void UpdateTexturedVertices()
{
if (m_altitudeMode == AltitudeMode.ClampedToGround)
{
if (m_lineString != null)
{
m_lineString.Remove = true;
m_lineString = null;
}
m_lineString = new LineString();
m_lineString.Coordinates = Points;
m_lineString.Color = LineColor;
m_lineString.LineWidth = LineWidth;
m_lineString.ParentRenderable = this;
this.World.ProjectedVectorRenderer.Add(m_lineString);
if (m_wallVertices != null)
{
m_wallVertices = null;
}
return;
}
if (m_extrude || m_altitudeMode == AltitudeMode.RelativeToGround)
{
m_wallVertices = new CustomVertex.PositionColoredTextured[m_numPoints * 2];
}
float textureCoordIncrement = 1.0f / (float)(m_numPoints - 1);
m_verticalExaggeration = World.Settings.VerticalExaggeration;
int vertexColor = m_polygonColor.ToArgb();
m_topVertices = new CustomVertex.PositionColored[m_numPoints];
for (int i = 0; i < m_numPoints; i++)
{
double terrainHeight = 0;
if (m_altitudeMode == AltitudeMode.RelativeToGround)
{
if (World.TerrainAccessor != null)
{
terrainHeight = World.TerrainAccessor.GetElevationAt(
m_points[i].Y,
m_points[i].X,
(100.0 / DrawArgs.Camera.ViewRange.Degrees)
);
}
}
Vector3 xyzVertex = MathEngine.SphericalToCartesian(
m_points[i].Y,
m_points[i].X,
m_verticalExaggeration * (m_distanceAboveSurface + terrainHeight + m_points[i].Z) + World.EquatorialRadius
);
m_topVertices[i].X = xyzVertex.X;
m_topVertices[i].Y = xyzVertex.Y;
m_topVertices[i].Z = xyzVertex.Z;
m_topVertices[i].Color = m_lineColor.ToArgb();
if (m_extrude || m_altitudeMode == AltitudeMode.RelativeToGround)
{
m_wallVertices[2 * i].X = xyzVertex.X;
m_wallVertices[2 * i].Y = xyzVertex.Y;
m_wallVertices[2 * i].Z = xyzVertex.Z;
m_wallVertices[2 * i].Color = vertexColor;
m_wallVertices[2 * i].Tu = i * textureCoordIncrement;
m_wallVertices[2 * i].Tv = 1.0f;
xyzVertex = MathEngine.SphericalToCartesian(
m_points[i].Y,
m_points[i].X,
m_verticalExaggeration * (m_distanceAboveSurface + terrainHeight) + World.EquatorialRadius
);
m_wallVertices[2 * i + 1].X = xyzVertex.X;
m_wallVertices[2 * i + 1].Y = xyzVertex.Y;
m_wallVertices[2 * i + 1].Z = xyzVertex.Z;
m_wallVertices[2 * i + 1].Color = vertexColor;
m_wallVertices[2 * i + 1].Tu = i * textureCoordIncrement;
m_wallVertices[2 * i + 1].Tv = 0.0f;
}
}
}