internal static void Init(Projection proj, TerrainAccessor terrainAccessor, double layerRadius)
{
_proj = proj;
_terrainAccessor = terrainAccessor;
_layerRadius = layerRadius;
}
/// <summary>
/// Layer initialization code
/// </summary>
public override void Initialize(DrawArgs drawArgs)
{
try
{
if (this.isInitialized == true)
{
return;
}
pushpinsprite = new Sprite(drawArgs.device);
string spritePath = Path.GetDirectoryName(System.Windows.Forms.Application.ExecutablePath) + "\\Plugins\\VirtualEarth\\VirtualEarthPushPin.png";
if (File.Exists(spritePath) == false)
{
Utility.Log.Write(new Exception("spritePath not found " + spritePath));
}
earthRadius = parentApplication.CurrentWorld.EquatorialRadius;
earthCircum = earthRadius * 2.0 * Math.PI; //40075016.685578488
earthHalfCirc = earthCircum / 2; //20037508.
string[] projectionParameters = new string[] { "proj=merc", "ellps=sphere", "a=" + earthRadius.ToString(CultureInfo.InvariantCulture), "es=0.0", "no.defs" };
proj = new Projection(projectionParameters);
//static
VeTile.Init(this.proj, parentApplication.CurrentWorld.TerrainAccessor, parentApplication.CurrentWorld.EquatorialRadius);
prevVe = World.Settings.VerticalExaggeration;
this.isInitialized = true;
}
catch (Exception ex)
{
Utility.Log.Write(ex);
throw;
}
}
/// <summary>
/// Builds a mesh using a projection (with terrain if requested)
/// </summary>
protected virtual void CreateProjectedMesh(Projection proj, bool bTerrain)
{
int baseIndex;
UV geo;
double sinLat, cosLat, sinLon, cosLon, height, latRange = North - South;
double layerRadius = (double)quadTileSet.LayerRadius;
double scaleFactor = 1.0 / (double)vertexCount;
int thisVertexCount = vertexCount / 2 + (vertexCount % 2);
int thisVertexCountPlus1 = thisVertexCount + 1;
const double Degrees2Radians = Math.PI / 180.0;
int totalVertexCount = thisVertexCountPlus1 * thisVertexCountPlus1;
northWestVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
southWestVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
northEastVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
southEastVertices = new CustomVertex.PositionNormalTextured[totalVertexCount];
double uStep = (UR.U - UL.U) * scaleFactor;
double vStep = (UL.V - LL.V) * scaleFactor;
// figure out latrange (for terrain detail)
if (bTerrain)
{
UV geoUL = proj.Inverse(UL);
UV geoLR = proj.Inverse(LR);
latRange = (geoUL.V - geoLR.V) * 180 / Math.PI;
}
baseIndex = 0;
UV curUnprojected = new UV(UL.U, UL.V);
for (int i = 0; i < thisVertexCountPlus1; i++)
{
for (int j = 0; j < thisVertexCountPlus1; j++)
{
geo = proj.Inverse(curUnprojected);
sinLat = Math.Sin(geo.V);
sinLon = Math.Sin(geo.U);
cosLat = Math.Cos(geo.V);
cosLon = Math.Cos(geo.U);
height = layerRadius;
if (bTerrain)
{
// Radians -> Degrees
geo.U /= Degrees2Radians;
geo.V /= Degrees2Radians;
height += verticalExaggeration * quadTileSet.World.TerrainAccessor.GetElevationAt(geo.V, geo.U, Math.Abs(vertexCount / latRange));
}
northWestVertices[baseIndex].X = (float)(height * cosLat * cosLon - localOrigin.X);
northWestVertices[baseIndex].Y = (float)(height * cosLat * sinLon - localOrigin.Y);
northWestVertices[baseIndex].Z = (float)(height * sinLat - localOrigin.Z);
northWestVertices[baseIndex].Tu = (float)(j * scaleFactor);
northWestVertices[baseIndex].Tv = (float)(i * scaleFactor);
northWestVertices[baseIndex].Normal =
new Vector3(northWestVertices[baseIndex].X + (float)localOrigin.X,
northWestVertices[baseIndex].Y + (float)localOrigin.Y,
northWestVertices[baseIndex].Z + (float)localOrigin.Z);
northWestVertices[baseIndex].Normal.Normalize();
baseIndex += 1;
curUnprojected.U += uStep;
}
curUnprojected.U = UL.U;
curUnprojected.V -= vStep;
}
baseIndex = 0;
curUnprojected = new UV(UL.U, UL.V - (UL.V - LL.V) / 2.0);
for (int i = 0; i < thisVertexCountPlus1; i++)
{
for (int j = 0; j < thisVertexCountPlus1; j++)
{
geo = proj.Inverse(curUnprojected);
sinLat = Math.Sin(geo.V);
sinLon = Math.Sin(geo.U);
cosLat = Math.Cos(geo.V);
cosLon = Math.Cos(geo.U);
height = layerRadius;
if (bTerrain)
{
// Radians -> Degrees
geo.U /= Degrees2Radians;
geo.V /= Degrees2Radians;
height += verticalExaggeration * quadTileSet.World.TerrainAccessor.GetElevationAt(geo.V, geo.U, Math.Abs(vertexCount / latRange));
}
southWestVertices[baseIndex].X = (float)(height * cosLat * cosLon - localOrigin.X);
southWestVertices[baseIndex].Y = (float)(height * cosLat * sinLon - localOrigin.Y);
southWestVertices[baseIndex].Z = (float)(height * sinLat - localOrigin.Z);
southWestVertices[baseIndex].Tu = (float)(j * scaleFactor);
southWestVertices[baseIndex].Tv = (float)((i + thisVertexCount) * scaleFactor);
southWestVertices[baseIndex].Normal =
new Vector3(southWestVertices[baseIndex].X + (float)localOrigin.X,
southWestVertices[baseIndex].Y + (float)localOrigin.Y,
southWestVertices[baseIndex].Z + (float)localOrigin.Z);
southWestVertices[baseIndex].Normal.Normalize();
baseIndex += 1;
curUnprojected.U += uStep;
}
curUnprojected.U = UL.U;
curUnprojected.V -= vStep;
}
baseIndex = 0;
curUnprojected = new UV(UL.U + (UR.U - UL.U) / 2.0, UL.V);
for (int i = 0; i < thisVertexCountPlus1; i++)
{
for (int j = 0; j < thisVertexCountPlus1; j++)
{
geo = proj.Inverse(curUnprojected);
sinLat = Math.Sin(geo.V);
sinLon = Math.Sin(geo.U);
cosLat = Math.Cos(geo.V);
cosLon = Math.Cos(geo.U);
height = layerRadius;
if (bTerrain)
{
// Radians -> Degrees
geo.U /= Degrees2Radians;
geo.V /= Degrees2Radians;
height += verticalExaggeration * quadTileSet.World.TerrainAccessor.GetElevationAt(geo.V, geo.U, Math.Abs(vertexCount / latRange));
}
northEastVertices[baseIndex].X = (float)(height * cosLat * cosLon - localOrigin.X);
northEastVertices[baseIndex].Y = (float)(height * cosLat * sinLon - localOrigin.Y);
northEastVertices[baseIndex].Z = (float)(height * sinLat - localOrigin.Z);
northEastVertices[baseIndex].Tu = (float)((j + thisVertexCount) * scaleFactor);
northEastVertices[baseIndex].Tv = (float)(i * scaleFactor);
northEastVertices[baseIndex].Normal =
new Vector3(northEastVertices[baseIndex].X + (float)localOrigin.X,
northEastVertices[baseIndex].Y + (float)localOrigin.Y,
northEastVertices[baseIndex].Z + (float)localOrigin.Z);
northEastVertices[baseIndex].Normal.Normalize();
baseIndex += 1;
curUnprojected.U += uStep;
}
curUnprojected.U = UL.U + (UR.U - UL.U) / 2.0;
curUnprojected.V -= vStep;
}
baseIndex = 0;
curUnprojected = new UV(UL.U + (UR.U - UL.U) / 2.0, UL.V - (UL.V - LL.V) / 2.0);
for (int i = 0; i < thisVertexCountPlus1; i++)
{
for (int j = 0; j < thisVertexCountPlus1; j++)
{
geo = proj.Inverse(curUnprojected);
sinLat = Math.Sin(geo.V);
sinLon = Math.Sin(geo.U);
cosLat = Math.Cos(geo.V);
cosLon = Math.Cos(geo.U);
height = layerRadius;
if (bTerrain)
{
// Radians -> Degrees
geo.U /= Degrees2Radians;
geo.V /= Degrees2Radians;
height += verticalExaggeration * quadTileSet.World.TerrainAccessor.GetElevationAt(geo.V, geo.U, Math.Abs(vertexCount / latRange));
}
southEastVertices[baseIndex].X = (float)(height * cosLat * cosLon - localOrigin.X);
southEastVertices[baseIndex].Y = (float)(height * cosLat * sinLon - localOrigin.Y);
southEastVertices[baseIndex].Z = (float)(height * sinLat - localOrigin.Z);
southEastVertices[baseIndex].Tu = (float)((j + thisVertexCount) * scaleFactor);
southEastVertices[baseIndex].Tv = (float)((i + thisVertexCount) * scaleFactor);
southEastVertices[baseIndex].Normal =
new Vector3(southEastVertices[baseIndex].X + (float)localOrigin.X,
southEastVertices[baseIndex].Y + (float)localOrigin.Y,
southEastVertices[baseIndex].Z + (float)localOrigin.Z);
southEastVertices[baseIndex].Normal.Normalize();
baseIndex += 1;
curUnprojected.U += uStep;
}
curUnprojected.U = UL.U + (UR.U - UL.U) / 2.0;
curUnprojected.V -= vStep;
}
vertexIndexes = new short[2 * thisVertexCount * thisVertexCount * 3];
for (int i = 0; i < thisVertexCount; i++)
{
baseIndex = (2 * 3 * i * thisVertexCount);
for (int j = 0; j < thisVertexCount; j++)
{
vertexIndexes[baseIndex] = (short)(i * thisVertexCountPlus1 + j);
vertexIndexes[baseIndex + 1] = (short)((i + 1) * thisVertexCountPlus1 + j);
vertexIndexes[baseIndex + 2] = (short)(i * thisVertexCountPlus1 + j + 1);
vertexIndexes[baseIndex + 3] = (short)(i * thisVertexCountPlus1 + j + 1);
vertexIndexes[baseIndex + 4] = (short)((i + 1) * thisVertexCountPlus1 + j);
vertexIndexes[baseIndex + 5] = (short)((i + 1) * thisVertexCountPlus1 + j + 1);
baseIndex += 6;
}
}
// JBTODO: Should we normalize here for elevated mesh?
}