void Start()
{
tfm = this.transform;
cam = GetComponent <Camera>();
material = new Material(shader);
cam.clearFlags = CameraClearFlags.Nothing;
cells_order = new CellSortInfo[8];
node_stack = new NodeStackItem[32];
linked_idxyz = new IdXYZ[32];
for (int j = 0; j < node_stack.Length; j++)
{
node_stack[j] = new NodeStackItem();
// the 1st and the 7 following
var idxyz0 = new IdXYZ();
var idxyz = idxyz0;
for (int i = 1; i < 8; i++)
{
idxyz.next = new IdXYZ();
idxyz = idxyz.next;
}
linked_idxyz[j] = idxyz0;
}
stopwatch = new System.Diagnostics.Stopwatch();
}
public int CompareTo(object obj)
{
CellSortInfo other = obj as CellSortInfo;
if (distanceToCamera < other.distanceToCamera)
{
return(1);
}
else if (distanceToCamera > other.distanceToCamera)
{
return(-1);
}
else
{
return(0);
}
}
float CalcVertices(VoxelObject voxel_obj, out Bounds screen_bounds, out Vector4 offset_scale)
{
float src_local_size = voxel_obj.Scale * 0.5f;
int octree_size = (1 << voxel_obj.octree.MaxDepth);
if (voxel_obj.UseOctreeSize)
{
src_local_size *= octree_size;
}
Vector3 offset = (voxel_obj.octree.bounds.center * (1f / octree_size)) * 2f;
if (!OffsetByBounds)
{
offset = Vector3.zero;
}
offset_scale = new Vector4(offset.x, offset.y, offset.z, src_local_size);
float local_size = 0; // radius of encircling sphere
var obj_pos = voxel_obj.transform.position;
var obj_matrix = voxel_obj.transform.localToWorldMatrix;
var look_matrix = tfm.worldToLocalMatrix;
var look_dir = tfm.forward;
var look_pos = tfm.position;
var look_obj_pos = look_matrix.MultiplyPoint3x4(obj_pos);
float z_epsilon = Mathf.Min(0.001f, cam.nearClipPlane);
bool bounds_initialized = false;
screen_bounds = default(Bounds);
var bounds_scales = voxel_obj.octree.bounds.extents * (1f / octree_size) * 2f * src_local_size;
int i = 0;
for (int z = -1; z <= 1; z += 2)
{
for (int y = -1; y <= 1; y += 2)
{
for (int x = -1; x <= 1; x += 2)
{
var p = ((new Vector3(x, y, z)) - offset) * src_local_size;
p = obj_matrix.MultiplyPoint3x4(p);
var look_p = look_matrix.MultiplyPoint3x4(p);
local_size = Mathf.Max(local_size, (look_obj_pos - look_p).magnitude);
var proj = cam.WorldToScreenPoint(p);
proj.z = look_p.z;
var csi = new CellSortInfo(i, proj.z, p, look_p, proj);
if (OffsetByBounds)
{
csi.position_bounds = obj_matrix.MultiplyPoint3x4(
Vector3.Scale(new Vector3(x, y, z), bounds_scales));
}
else
{
csi.position_bounds = p;
}
cells_order[i] = csi;
look_p.z = Mathf.Max(look_p.z, z_epsilon);
p = tfm.TransformPoint(look_p);
proj = cam.WorldToScreenPoint(p);
proj.z = look_p.z;
if (bounds_initialized)
{
screen_bounds.Encapsulate(proj);
}
else
{
screen_bounds = new Bounds(proj, Vector3.zero);
bounds_initialized = true;
}
i += 1;
}
}
}
if (DrawBounds)
{
DrawCubeWire();
}
System.Array.Sort(cells_order, delegate(CellSortInfo csi1, CellSortInfo csi2) {
return(csi1.distance.CompareTo(csi2.distance));
});
return(local_size);
}