Unity3DTileBoundingVolume CreateBoundingVolume(Schema.BoundingVolume boundingVolume, Matrix4x4 transform)
{
if (boundingVolume.Box.Count == 12)
{
var box = boundingVolume.Box;
Vector3 center = new Vector3((float)box[0], (float)box[1], (float)box[2]);
Vector3 halfAxesX = new Vector3((float)box[3], (float)box[4], (float)box[5]);
Vector3 halfAxesY = new Vector3((float)box[6], (float)box[7], (float)box[8]);
Vector3 halfAxesZ = new Vector3((float)box[9], (float)box[10], (float)box[11]);
// TODO: Review this coordinate frame change
// This does not take into account the coodinate frame of the glTF files and gltfUpAxis
// https://github.com/AnalyticalGraphicsInc/3d-tiles/issues/280#issuecomment-359980111
center.x *= -1;
halfAxesX.x *= -1;
halfAxesY.x *= -1;
halfAxesZ.x *= -1;
var result = new TileOrientedBoundingBox(center, halfAxesX, halfAxesY, halfAxesZ);
result.Transform(transform);
return(result);
}
if (boundingVolume.Sphere.Count == 4)
{
var sphere = boundingVolume.Sphere;
Vector3 center = new Vector3((float)sphere[0], (float)sphere[1], (float)sphere[2]);
float radius = (float)sphere[3];
var result = new TileBoundingSphere(center, radius);
result.Transform(transform);
return(result);
}
if (boundingVolume.Region.Count == 6)
{
// TODO: Implement support for regions
Debug.LogError("Regions not supported");
return(null);
}
Debug.LogError("boundingVolume must contain a box, sphere, or region");
return(null);
}
public static bool IsDefined(this Schema.BoundingVolume volume)
{
return(volume.Box.Count != 0 || volume.Sphere.Count != 0 || volume.Region.Count != 0);
}