public TerrainPrimitive(Viewer viewer, TileManager tileManager, Tile tile, int x, int z)
{
Viewer = viewer;
TileX = tile.TileX;
TileZ = tile.TileZ;
Size = tile.Size;
PatchX = x;
PatchZ = z;
PatchSize = tile.Size * 2048 / tile.PatchCount;
TileManager = tileManager;
Tile = tile;
Patch = Tile.GetPatch(x, z);
var cx = Patch.CenterX - 1024;
var cz = Patch.CenterZ - 1024 + 2048 * tile.Size;
PatchLocation = new Vector3(cx, Tile.Floor, cz);
PatchVertexBuffer = GetVertexBuffer(out AverageElevation);
PatchIndexBuffer = GetIndexBuffer(out PatchPrimitiveCount);
var terrainMaterial = tile.Size > 2 ? "TerrainSharedDistantMountain" : PatchIndexBuffer == null ? "TerrainShared" : "Terrain";
var ts = Tile.Shaders[Patch.ShaderIndex].terrain_texslots;
var uv = Tile.Shaders[Patch.ShaderIndex].terrain_uvcalcs;
if (ts.Length > 1)
{
PatchMaterial = viewer.MaterialManager.Load(terrainMaterial, Helpers.GetTerrainTextureFile(viewer.Simulator, ts[0].Filename) + "\0" + Helpers.GetTerrainTextureFile(viewer.Simulator, ts[1].Filename) +
(uv[1].D != 0 && uv[1].D != 32 ? "\0" + uv[1].D.ToString(): ""));
}
else
{
PatchMaterial = viewer.MaterialManager.Load(terrainMaterial, Helpers.GetTerrainTextureFile(viewer.Simulator, ts[0].Filename) + "\0" + Helpers.GetTerrainTextureFile(viewer.Simulator, "microtex.ace"));
}
if (SharedPatchIndexBuffer == null)
{
SetupSharedData(Viewer.GraphicsDevice);
}
Tile = null;
Patch = null;
VertexBufferBindings = new[] { new VertexBufferBinding(PatchVertexBuffer), new VertexBufferBinding(GetDummyVertexBuffer(viewer.GraphicsDevice)) };
}
private List <VertexPositionNormalTexture> CalculateTrees(TileManager tiles, ForestObj forest, WorldPosition position, out float objectRadius)
{
// To get consistent tree placement between sessions, derive the seed from the location.
var random = new Random((int)(1000.0 * (position.Location.X + position.Location.Z + position.Location.Y)));
List <TrVectorSection> sections = new List <TrVectorSection>();
objectRadius = (float)Math.Sqrt(forest.forestArea.X * forest.forestArea.X + forest.forestArea.Z * forest.forestArea.Z) / 2;
if (MaximumCenterlineOffset > 0)
{
Matrix InvForestXNAMatrix = Matrix.Invert(position.XNAMatrix);
var addList = FindTracksAndRoadsClose(position.TileX, position.TileZ);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
// Check for cross-tile forests
List <Vector3> forestVertices = new List <Vector3>();
var forestVertex = new Vector3(-forest.forestArea.X / 2, 0, -forest.forestArea.Z / 2);
Vector3.Transform(ref forestVertex, ref position.XNAMatrix, out forestVertex);
forestVertices.Add(forestVertex);
forestVertex = new Vector3(forest.forestArea.X / 2, 0, -forest.forestArea.Z / 2);
Vector3.Transform(ref forestVertex, ref position.XNAMatrix, out forestVertex);
forestVertices.Add(forestVertex);
forestVertex = new Vector3(-forest.forestArea.X / 2, 0, forest.forestArea.Z / 2);
Vector3.Transform(ref forestVertex, ref position.XNAMatrix, out forestVertex);
forestVertices.Add(forestVertex);
forestVertex = new Vector3(forest.forestArea.X / 2, 0, forest.forestArea.Z / 2);
Vector3.Transform(ref forestVertex, ref position.XNAMatrix, out forestVertex);
forestVertices.Add(forestVertex);
bool[] considerTile = new bool [4] {
false, false, false, false
};
foreach (var fVertex in forestVertices)
{
if (fVertex.X > 1024)
{
considerTile[0] = true;
}
if (fVertex.X < -1024)
{
considerTile[1] = true;
}
if (fVertex.Z > 1024)
{
considerTile[3] = true;
}
if (fVertex.Z < -1024)
{
considerTile[2] = true;
}
}
// add sections in nearby tiles for cross-tile forests
if (considerTile[0])
{
addList = FindTracksAndRoadsClose(position.TileX + 1, position.TileZ);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[1])
{
addList = FindTracksAndRoadsClose(position.TileX - 1, position.TileZ);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[2])
{
addList = FindTracksAndRoadsClose(position.TileX, position.TileZ + 1);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[3])
{
addList = FindTracksAndRoadsClose(position.TileX, position.TileZ - 1);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[0] && considerTile[2])
{
addList = FindTracksAndRoadsClose(position.TileX + 1, position.TileZ + 1);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[0] && considerTile[3])
{
addList = FindTracksAndRoadsClose(position.TileX + 1, position.TileZ - 1);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[1] && considerTile[2])
{
addList = FindTracksAndRoadsClose(position.TileX - 1, position.TileZ + 1);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
if (considerTile[1] && considerTile[3])
{
addList = FindTracksAndRoadsClose(position.TileX - 1, position.TileZ - 1);
FindTracksAndRoadsMoreClose(ref sections, addList, forest, position, InvForestXNAMatrix);
}
}
var trees = new List <VertexPositionNormalTexture>(forest.Population * 6);
for (var i = 0; i < forest.Population; i++)
{
var xnaTreePosition = new Vector3((0.5f - (float)random.NextDouble()) * forest.forestArea.X, 0, (0.5f - (float)random.NextDouble()) * forest.forestArea.Z);
Vector3.Transform(ref xnaTreePosition, ref position.XNAMatrix, out xnaTreePosition);
bool onTrack = false;
var scale = MathHelper.Lerp(forest.scaleRange.Minimum, forest.scaleRange.Maximum, (float)random.NextDouble());
var treeSize = new Vector3(forest.treeSize.Width * scale, forest.treeSize.Height * scale, 1);
var heightComputed = false;
if (MaximumCenterlineOffset > 0 && sections != null && sections.Count > 0)
{
foreach (var section in sections)
{
onTrack = InitTrackSection(section, xnaTreePosition, position.TileX, position.TileZ, treeSize.X / 2);
if (onTrack)
{
try
{
var trackShape = Viewer.Simulator.TSectionDat.TrackShapes.Get((uint)section.ShapeIndex);
if (trackShape != null && trackShape.TunnelShape)
{
xnaTreePosition.Y = tiles.LoadAndGetElevation(position.TileX, position.TileZ, xnaTreePosition.X, -xnaTreePosition.Z, false);
heightComputed = true;
if (xnaTreePosition.Y > section.Y + 10)
{
onTrack = false;
continue;
}
}
}
catch
{
}
break;
}
}
}
if (!onTrack)
{
if (!heightComputed)
{
xnaTreePosition.Y = tiles.LoadAndGetElevation(position.TileX, position.TileZ, xnaTreePosition.X, -xnaTreePosition.Z, false);
}
xnaTreePosition -= position.XNAMatrix.Translation;
trees.Add(new VertexPositionNormalTexture(xnaTreePosition, treeSize, new Vector2(1, 1)));
trees.Add(new VertexPositionNormalTexture(xnaTreePosition, treeSize, new Vector2(0, 0)));
trees.Add(new VertexPositionNormalTexture(xnaTreePosition, treeSize, new Vector2(1, 0)));
trees.Add(new VertexPositionNormalTexture(xnaTreePosition, treeSize, new Vector2(1, 1)));
trees.Add(new VertexPositionNormalTexture(xnaTreePosition, treeSize, new Vector2(0, 1)));
trees.Add(new VertexPositionNormalTexture(xnaTreePosition, treeSize, new Vector2(0, 0)));
}
}
return(trees);
}