koobas.hobune.stream
Paint texture on terrain with scripting
Hey Guys,
I have finally accomplished it that i can paint textures on certain places of my terrain at runtime. The Problem is that on the places that i don't want to paint a new texture, must be painted again with the old texture. To make it clearer here is my code:
public class TerrainPaint : MonoBehaviour {
public void Paint () {
TerrainData td = Terrain.activeTerrain.terrainData;
float[,,] splatmapData = new float[td.alphamapWidth, td.alphamapHeight, td.alphamapLayers];
for (int y = 0; y < td.alphamapHeight; y++)
{
for (int x = 0; x < td.alphamapWidth; x++)
{
float[] tex = getmethatcrapmap(x, y);
Vector4 splat = new Vector4(tex[0], tex[1], tex[2], tex[3]);
if(y % 20 == 0)
{
splat = new Vector4(1, 0, 0, 0);
}
// now assign the values to the correct location in the array
splat.Normalize();
splatmapData[x, y, 0] = splat.x;
splatmapData[x, y, 1] = splat.y;
splatmapData[x, y, 2] = splat.z;
splatmapData[x, y, 3] = splat.w;
}
}
// and finally assign the new splatmap to the terrainData:
td.SetAlphamaps(0, 0, splatmapData);
}
public float[] getmethatcrapmap(int x, int y) {
TerrainData td = Terrain.activeTerrain.terrainData;
float[,,] splatmapData = td.GetAlphamaps(y, x, 1, 1);
float[] cellMix = new float[splatmapData.GetUpperBound(2)+1];
for(int n=0; n < cellMix.Length; ++n)
{
cellMix[n] = splatmapData[0,0,n];
}
return cellMix;
}
}
This only places a new texture every 20th x position. Now if i want to paint a texture at ,for example, 50 coordinates, it's I guess a lot of work, if the whole terrain is painted again.
So my question is, is there a way to paint a texture on a certain position without drawing the whole terrain again?
ok i've made it^^
is this only happening to me or someone else that sometime after you decide to ask something you come to a solution yourself^^
can u show me how u did it because im tryng to do the same thing and in serching i find ur post so can u plz tell ne how u did it it wud b very helpfull
I am also trying to do the same thing can I see the solution code please?
Just going to bump this. If you have a solution can you please share with everyone? Would be a lot of help as I know a lot of people would be interested in seeing how you managed to do it.
Thanks in advance
