public static bool HasTransform(this Schema.Tile tile)
{
if (tile.Transform == null || tile.Transform.Count == 0)
{
return(false);
}
return(true);
}
public static Matrix4x4 UnityTransform(this Schema.Tile tile)
{
if (!tile.HasTransform())
{
return(Matrix4x4.identity);
}
var m = new Matrix4x4();
m.SetColumn(0, new Vector4((float)tile.Transform[0], (float)tile.Transform[1], (float)tile.Transform[2], (float)tile.Transform[3]));
m.SetColumn(1, new Vector4((float)tile.Transform[4], (float)tile.Transform[5], (float)tile.Transform[6], (float)tile.Transform[7]));
m.SetColumn(2, new Vector4((float)tile.Transform[8], (float)tile.Transform[9], (float)tile.Transform[10], (float)tile.Transform[11]));
m.SetColumn(3, new Vector4((float)tile.Transform[12], (float)tile.Transform[13], (float)tile.Transform[14], (float)tile.Transform[15]));
return(m);
}
public Unity3DTile(Unity3DTileset tileset, string basePath, Schema.Tile tile, Unity3DTile parent)
{
this.hashCode = (int)Random.Range(0, int.MaxValue);
this.tileset = tileset;
this.tile = tile;
this.FrameState = new TileFrameState();
if (tile.Content != null)
{
this.Id = Path.GetFileNameWithoutExtension(tile.Content.Url);
}
if (parent != null)
{
parent.Children.Add(this);
this.Depth = parent.Depth + 1;
}
// TODO: Consider using a double percision Matrix library for doing 3d tiles root transform calculations
// Set the local transform for this tile, default to identity matrix
this.transform = this.tile.UnityTransform();
var parentTransform = (parent != null) ? parent.computedTransform : Matrix4x4.identity;
this.computedTransform = parentTransform * this.transform;
this.BoundingVolume = CreateBoundingVolume(tile.BoundingVolume, this.computedTransform);
// TODO: Add 2D bounding volumes
if (tile.Content != null && tile.Content.BoundingVolume.IsDefined())
{
// Non-leaf tiles may have a content bounding-volume, which is a tight-fit bounding volume
// around only the features in the tile. This box is useful for culling for rendering,
// but not for culling for traversing the tree since it does not guarantee spatial coherence, i.e.,
// since it only bounds features in the tile, not the entire tile, children may be
// outside of this box.
this.ContentBoundingVolume = CreateBoundingVolume(tile.Content.BoundingVolume, this.computedTransform);
}
else
{
// Default to tile bounding volume
this.ContentBoundingVolume = CreateBoundingVolume(tile.BoundingVolume, this.computedTransform);
}
// TODO: Add viewer request volume support
//if(tile.ViewerRequestVolume != null && tile.ViewerRequestVolume.IsDefined())
//{
// this.viewerRequestVolume = CreateBoundingVolume(tile.ViewerRequestVolume, transform);
//}
if (!tile.Refine.HasValue)
{
tile.Refine = (parent == null) ? Schema.TileRefine.REPLACE : parent.tile.Refine.Value;
}
this.Parent = parent;
if (this.HasEmptyContent)
{
this.ContentState = Unity3DTileContentState.READY;
}
else
{
ContentState = Unity3DTileContentState.UNLOADED;
this.ContentUrl = UriHelper.JoinUrls(basePath, tile.Content.Url);
}
this.HasRenderableContent = false;
this.HasTilesetContent = false;
}