//Heightmaps are RGB packed, generated by Generator app
float HeightColorToHeight(int x, int y)
{
int pos = (y * x_res + x) * 4;
//byte r = Heightmap.rgbValues[pos + 2];
//byte g = Heightmap.rgbValues[pos + 1];
//byte b = Heightmap.rgbValues[pos];
if (Heightmap == null)
{
return(0);
}
float[] col = Heightmap.GetPixel(x, y);
byte r = (byte)(col[0] * 255);
byte g = (byte)(col[1] * 255);
byte b = (byte)(col[2] * 255);
float height = -10000 + ((r * 256 * 256 + g * 256 + b) * 0.1f);
return(height);
}
public void PlantTrees(MAstroBody planet, MTerrainTile tile)
{
//DistanceThreshold = tile.DistanceThreshold;
Tile = tile;
if (tile.material == null)
{
return;
}
MTexture tex = Tile.Biome;
if (tex == null)
{
return;
}
this.transform.Position = tile.transform.Position;
Random ran = new Random(1234);
Matrix4d TreeRotation = Matrix4d.CreateFromQuaternion(Globals.LocalUpRotation());
int i = 0;
for (int z = 0; z < tile.z_res - 1; z++)
{
for (int x = 0; x < tile.x_res - 1; x++)
{
float[] c = tex.GetPixel(x, z);
float r = c[0];
float g = c[1];
float b = c[2];
float a = c[3];
float t = 0;
//if ((b > r) && (b > g)) t = g;
if ((r < 0.05) && (g > 0.1) && (b < 0.05))
{
t = g;
}
else
{
continue;
}
if (ran.NextDouble() > Settings.TreeDensity)
{
continue;
}
//if (g < 0.7) continue;
//Console.WriteLine(c[0] + " " + c[1] + " " + c[2] + " " + c[3]);
if (i >= Settings.MaxTreesPerTerrain)
{
break;
}
Vector3d Treepos = new Vector3d(x,
0,
z);
//Vector3d PlantingPos = planet.GetNearestPointOnSphere(Treepos, 0);
Matrix4d TreeScale = Matrix4d.Scale(1 + ran.NextDouble(), 1 + ran.NextDouble() * 2, 1 + ran.NextDouble());
Vector3d PlantingPos = Tile.GetPointOnSurfaceFromGrid(Treepos); //; + new Vector3d(r.NextDouble()*5, r.NextDouble() * 5, r.NextDouble()*5);
Matrix4d TreePosition = Matrix4d.CreateTranslation(PlantingPos);
//find point at y with raycast
Matrix4 final = MTransform.GetFloatMatrix(TreeScale * TreeRotation * TreePosition);
mats[i] = final;
i++;
}
}
TotalInstances = i;
for (int j = TotalInstances; j < Settings.MaxTreesPerTerrain; j++)
{
Matrix4 final = Matrix4.CreateTranslation(j, 0, 0);
mats[j] = final;
}
//Setup();
//UploadBuffer();
Planted = false;
}