void BuildVoxelWorld()
{
var baseHeight = (int)MapboxConvenience.GetRelativeHeightFromColor((_elevationTexture.GetPixel(_elevationTexture.width / 2, _elevationTexture.height / 2)), 1 / _elevationMultiplier);
for (int x = 0; x < _rasterTexture.width; x++)
{
for (int z = 0; z < _rasterTexture.height; z++)
{
var height = (int)MapboxConvenience.GetRelativeHeightFromColor(_elevationTexture.GetPixel(x, z), 1 / _elevationMultiplier) - baseHeight;
height = (int)(height * _tileScale);
var startHeight = height - _voxelDepthPadding - 1;
var color = _rasterTexture.GetPixel(x, z);
for (int y = startHeight; y < height; y++)
{
_voxels.Add(new VoxelData()
{
Position = new Vector3(x, y, z), Prefab = _voxelFetcher.GetVoxelFromColor(color)
});
}
}
}
// TODO: decouple me!
_player.transform.position = new Vector3(_tileWidthInVoxels * .5f, 2f, _tileWidthInVoxels * .5f);
StartCoroutine(BuildRoutine());
var cc = _player.GetComponent <CharacterController>();
if (cc)
{
cc.enabled = true;
}
}
void ExtrudeHeight()
{
// FIXME: what does this number represent?
var relativeScale = TileScaleInMeters / 256 * MapboxConvenience.Instance.TileScale / transform.localScale.x;
var elevationTexture = new Texture2D(0, 0);
elevationTexture.LoadImage(_elevation.Data);
// HACK: UV's are "flipped" on Unity plane. Undo that flip.
var flip = Quaternion.Euler(0, 180, 0);
var pixelsPerMeter = 256f / MapboxConvenience.Instance.TileScale;
var newVertices = new List <Vector3>();
// TODO: optimize with GetPixels()
foreach (var vert in _vertices)
{
var localVert = flip * vert;
// Account for local scale.
localVert *= transform.localScale.x;
var x = (int)Mathf.Clamp((localVert.x * pixelsPerMeter + 128), 0, 255);
var y = (int)Mathf.Clamp((localVert.z * pixelsPerMeter + 128), 0, 255);
var color = elevationTexture.GetPixel(x, y);
var newVert = vert;
newVert.y = MapboxConvenience.GetRelativeHeightFromColor(color, relativeScale);
newVertices.Add(newVert);
}
_meshFilter.mesh.SetVertices(newVertices);
var collider = GetComponent <MeshCollider>();
if (collider)
{
collider.sharedMesh = _meshFilter.mesh;
}
// This fixes rendering bugs if vertices are too far offset from their original locations.
_meshFilter.mesh.RecalculateBounds();
}