private void GenerateTerrain(int seed)
{
if (terrainManager != null)
if (terrainManager.cellsInitialized > 0
&& (terrainManager.cellsInitialized < terrainManager.terrainCells.Length))
return; // currently generating terrain
terrainManager = new TerrainManager((int)terrainRes, (int)cellRes);
terrainManager.InitializeCells();
terrainManager.Initialized = false;
terrainManager.cellsInitialized = 0;
//set texture scale for shader
if (terrainDrawContext != null)
SetTextureScale();
object terrainLock = new object();
terrainGenerationTimer = new Stopwatch();
terrainGenerationTimer.Start();
vertexCount = 0;
// generate terrain
Thread terrainProcessing = new Thread(delegate()
{
terrainManager.ForEachCell((pos, cell) =>
{
// do each cell in its own thread
Thread t = new Thread(delegate()
{
// generate perlin 3d noise
Vector3 noiseOffset = pos;
noiseOffset.Y *= -1;
cell.PerlinNoise(noiseOffset * cellRes, terrainNoiseDensity, seed);
// generate mesh for the cell
TerrainCellMesh mesh = new TerrainCellMesh(terrainManager.GetCell(pos), pos);
mesh.Calculate(cubicTerrain, GraphicsDevice);
if (mesh == null)
{
throw new Exception("Problem generating mesh from volume!");
}
terrainManager.terrainCellMeshes[(int)pos.X, (int)pos.Y, (int)pos.Z] = mesh;
/*
terrainManager.terrainCells[(int)pos.X, (int)pos.Y, (int)pos.Z].ForEach(voxelPos =>
terrainManager.terrainCells[(int)pos.X, (int)pos.Y, (int)pos.Z].setDensityAt(voxelPos, 255));
//terrainManager.terrainCells[(int)pos.X, (int)pos.Y, (int)pos.Z].CreateSphere(19, 255);
terrainManager.terrainCellMeshes[(int)pos.X, (int)pos.Y, (int)pos.Z] = new TerrainCellMesh(terrainManager.GetCell(pos), pos);
terrainManager.terrainCellMeshes[(int)pos.X, (int)pos.Y, (int)pos.Z].Calculate();
*/
lock (terrainLock)
{
terrainManager.cellsInitialized++;
if (mesh.VerticesNormal != null)
{
vertexCount += mesh.VerticesNormal.Length;
//triangleCount += mesh.Indices.Length / 3;
}
}
});
t.IsBackground = true;
t.Start();
});
});
terrainProcessing.IsBackground = true;
terrainProcessing.Start();
/*
// test sphere
terrainManager.terrainCells[0, 0, 0].CreateSphere(18, 255);
terrainManager.terrainCellMeshes[0, 0, 0] = new TerrainCellMesh(terrainManager.GetCell(0, 0, 0));
terrainManager.terrainCellMeshes[0, 0, 0].Calculate();
terrainManager.Initialized = true;*/
}
private void GenerateTerrain(int seed)
{
if (terrainManager != null)
if (terrainManager.cellsInitialized > 0
&& (terrainManager.cellsInitialized < terrainManager.terrainCells.Length))
return; // currently generating terrain
const int initialCellRes = 16;
const int initialTerrainRes = 4;
terrainManager = new TerrainManager(initialTerrainRes, initialCellRes);
terrainManager.InitializeCells();
// set initialization state to false until we're actually done generating the cells
terrainManager.Initialized = false;
terrainManager.cellsInitialized = 0;
//set texture scale for shader
//if (terrainDrawContext != null)
//SetTriplanarTextureScale();
object terrainLock = new object();
terrainGenerationTimer = new Stopwatch();
terrainGenerationTimer.Start();
// generate terrain
Thread terrainProcessing = new Thread(delegate()
{
terrainManager.ForEachCell((cellPos, cell) =>
{
// do each cell in its own thread
var t = Task.Factory.StartNew(() =>
{
// generate perlin 3d noise
Vector3 noiseOffset = cellPos;
noiseOffset.Y *= -1;
cell.PerlinNoise(noiseOffset * terrainManager.cellDimensions.X, terrainNoiseDensity, seed);
TerrainCellMesh mesh = new TerrainCellMesh(cell, cellPos, terrainManager.cellGap);
mesh.Calculate(terrainManager.cubicTerrain);
if (mesh == null)
{
throw new Exception("Problem generating mesh from volume!");
}
// calculate convex hull
mesh.CalculatePhysicsHull();
// add mesh's convex hull to the physics sim
world.AddBody(mesh.RigidBody);
lock (terrainLock)
{
terrainManager.terrainCellMeshes[(int)cellPos.X, (int)cellPos.Y, (int)cellPos.Z] = mesh;
if (mesh.Vertices != null)
terrainManager.vertexCount += mesh.Vertices.Count;
terrainManager.cellsInitialized++;
}
//drawToRenderTarget.Add(new DrawRotated(terrainManager.terrainCellMeshes[(int)pos.X, (int)pos.Y, (int)pos.Z]));
});
});
// for each cell, create overlapping data with
// neighboring cells so we can avoid ugly border seams
// then, generate a mesh for each cell
/*
cell.ForEach(innerPos =>
{
if ((cellPos.X != 0) && (innerPos.X == 0))
{
// get neighbor cell border density
VolumeDensity8 neighborCell = terrainManager.GetCell(cellPos.X - 1, cellPos.Y, cellPos.Z);
byte density = neighborCell.getVoxelAt(cell.getWidth(), innerPos.Y, innerPos.Z).getDensity();
//byte density2 = cell.getVoxelAt(innerPos).getDensity();
//density = (byte)((density + density2) / 2);
// set current cell border to match
cell.setDensityAt(innerPos.X - 1, innerPos.Y, innerPos.Z, density);
}
if ((cellPos.X != terrainManager.terrainDimensions.X)
&& (innerPos.X == cell.getWidth()))
{
// get neighbor cell border density
VolumeDensity8 neighborCell = terrainManager.GetCell(cellPos.X + 1, cellPos.Y, cellPos.Z);
byte density = neighborCell.getVoxelAt(0, innerPos.Y, innerPos.Z).getDensity();
//byte density2 = cell.getVoxelAt(innerPos).getDensity();
//density = (byte)((density + density2) / 2);
// set current cell border to match
cell.setDensityAt(innerPos.X + 1, innerPos.Y, innerPos.Z, density);
}
if ((cellPos.Y != 0) && (innerPos.Y == 0))
{
// get neighbor cell border density
VolumeDensity8 neighborCell = terrainManager.GetCell(cellPos.X, cellPos.Y - 1, cellPos.Z);
byte density = neighborCell.getVoxelAt(innerPos.X, cell.getHeight(), innerPos.Z).getDensity();
//byte density2 = cell.getVoxelAt(innerPos).getDensity();
//density = (byte)((density + density2) / 2);
// set current cell border to match
cell.setDensityAt(innerPos.X, innerPos.Y - 1, innerPos.Z, density);
}
if ((cellPos.Y != terrainManager.terrainDimensions.Y)
&& (innerPos.Y == cell.getHeight()))
{
// get neighbor cell border density
VolumeDensity8 neighborCell = terrainManager.GetCell(cellPos.X, cellPos.Y + 1, cellPos.Z);
byte density = neighborCell.getVoxelAt(innerPos.X, 0, innerPos.Z).getDensity();
//byte density2 = cell.getVoxelAt(innerPos).getDensity();
//density = (byte)((density + density2) / 2);
// set current cell border to match
cell.setDensityAt(innerPos.X, innerPos.Y + 1, innerPos.Z, density);
}
if ((cellPos.Z != 0) && (innerPos.Z == 0))
{
// get neighbor cell border density
VolumeDensity8 neighborCell = terrainManager.GetCell(cellPos.X, cellPos.Y, cellPos.Z - 1);
byte density = neighborCell.getVoxelAt(innerPos.X, innerPos.Y, cell.getDepth()).getDensity();
//byte density2 = cell.getVoxelAt(innerPos).getDensity();
//density = (byte)((density + density2) / 2);
// set current cell border to match
cell.setDensityAt(innerPos.X, innerPos.Y, innerPos.Z - 1, density);
}
if ((cellPos.Z != terrainManager.terrainDimensions.Z)
&& (innerPos.Z == cell.getDepth()))
{
// get neighbor cell border density
VolumeDensity8 neighborCell = terrainManager.GetCell(cellPos.X, cellPos.Y, cellPos.Z + 1);
byte density = neighborCell.getVoxelAt(innerPos.X, innerPos.Y, 0).getDensity();
//byte density2 = cell.getVoxelAt(innerPos).getDensity();
//density = (byte)((density + density2) / 2);
// set current cell border to match
cell.setDensityAt(innerPos.X, innerPos.Y, innerPos.Z + 1, density);
}
});*/
});
terrainProcessing.IsBackground = true;
terrainProcessing.Start();
drawToRenderTarget.Add(terrainManager);
}