private void ExtractDetailTextures(Terrain terrain)
{
var data = terrain.terrainData;
var detailCount = data.detailPrototypes.Length;
for (int i = 0; i < detailCount; i += 4)
{
string title = "Extract terrain detail textures " + (i + 1) + "-" + Mathf.Min(i + 4, detailCount);
string path = EditorUtility.SaveFilePanelInProject(title, "extractedDensityTexture",
"png", "Choose where to save the extracted density texture");
if (path == null)
{
return;
}
var details = new int[4][, ];
for (int j = 0; j < 4; j++)
{
if (i + j < detailCount)
{
details[j] = data.GetDetailLayer(0, 0, data.detailWidth, data.detailHeight, i + j);
}
else
{
details[j] = new int[data.detailWidth, data.detailHeight];
}
}
var colors = new Color[data.detailWidth * data.detailHeight];
for (int x = 0; x < data.detailWidth; x++)
{
for (int y = 0; y < data.detailHeight; y++)
{
//The shader uses different UV's than Unity terrain.. or I f****d up the conversion to terrain...
var index = x * data.detailHeight + y;
colors[index] = new Color(details[0][x, y], details[1][x, y], details[2][x, y], details[3][x, y]) / 16;
}
}
var tex = new Texture2D(data.detailWidth, data.detailHeight, TextureFormat.ARGB32, false, true);
tex.SetPixels(colors);
GrassEditorUtility.SaveTextureToFile(path, tex);
}
}
private void CreateTexture(string path, TextureTarget target)
{
//Create the new texture and save it at the selected path
grassPainter.CurrentTexture = new Texture2D(textureSize, textureSize, TextureFormat.ARGB32, false, true);
Color[] colors = new Color[textureSize * textureSize];
var initColor = target == TextureTarget.Density ? new Color(0, 0, 0, 0) : Color.white;
for (int i = 0; i < colors.Length; i++)
{
colors[i] = initColor;
}
grassPainter.CurrentTexture.SetPixels(colors);
grassPainter.CurrentTexture.Apply();
var workingTex = grassPainter.CurrentTexture;
var texture = GrassEditorUtility.SaveTextureToFile(path, workingTex);
Destroy(workingTex);
grassPainter.CurrentTexture = texture;
switch (target)
{
case TextureTarget.ColorHeight:
grassMaterial.SetTexture("_ColorMap", texture);
break;
case TextureTarget.Density:
grassMaterial.SetTexture("_Density", texture);
break;
default:
throw new ArgumentOutOfRangeException("target", target, null);
}
}