public static Vector2D PixelSize(this Terrain terrain, TerrainControlType controlType)
{
Vector2D worldSize = (Vector2D)terrain.terrainData.size;
int resolution = GetResolution(terrain, controlType);
return(worldSize / (resolution - 1)); //since terrain size looses half pixel from both sides
}
public static CoordRect PixelRect(this Terrain terrain, TerrainControlType controlType)
/// Getting whole terrain pixel rect
{
int resolution = GetResolution(terrain, controlType);
Vector2D pixelSize = PixelSize(terrain, controlType);
return(new CoordRect(
Mathf.RoundToInt(terrain.transform.position.x / pixelSize.x),
Mathf.RoundToInt(terrain.transform.position.z / pixelSize.z),
resolution,
resolution));
}
public static int GetResolution(this Terrain terrain, TerrainControlType controlType)
{
TerrainData terrainData = terrain.terrainData;
switch (controlType)
{
case TerrainControlType.Height: return(terrainData.heightmapResolution);
case TerrainControlType.Splats: return(terrainData.alphamapResolution);
case TerrainControlType.Grass: return(terrainData.detailResolution);
default: return(0);
}
}
public static CoordRect PixelRect(this Terrain terrain, Vector2D worldPos, Vector2D worldSize, TerrainControlType controlType)
/// Convering offset/size rect to pixel rect
{
Vector2D pixelSize = PixelSize(terrain, controlType);
return(CoordRect.WorldToPixel(worldPos, worldSize, pixelSize));
}
