public AllignedBox UnionWith(AllignedBox other)
{
double newx1 = Math.Min(centre.X - width / 2, other.centre.X - other.width / 2);
double newx2 = Math.Max(centre.X + width / 2, other.centre.X + other.width / 2);
double newy1 = Math.Min(centre.Y - height / 2, other.centre.Y - other.height / 2);
double newy2 = Math.Max(centre.Y + height / 2, other.centre.Y + other.height / 2);
double newz1 = Math.Min(centre.Z - depth / 2, other.centre.Z - other.depth / 2);
double newz2 = Math.Max(centre.Z + depth / 2, other.centre.Z + other.depth / 2);
Point newcentre = new Point();
newcentre.X = (newx2 + newx1) / 2;
newcentre.Y = (newy2 + newy1) / 2;
newcentre.Z = (newz2 + newz1) / 2;
double newwidth = newx2 - newx1;
double newheight = newy2 - newy1;
double newdepth = newz2 - newz1;
AllignedBox boxret = new AllignedBox(newcentre, newwidth, newheight, newdepth);
return boxret;
}
public AllignedBox(AllignedBox other)
: this(new Point(other.centre.X, other.centre.Y, other.centre.Z), other.width, other.height, other.depth)
{
}
public void Increase(AllignedBox stretchby)
{
double newx1 = Math.Min(centre.X - width / 2, stretchby.centre.X - stretchby.width / 2);
double newx2 = Math.Max(centre.X + width / 2, stretchby.centre.X + stretchby.width / 2);
double newy1 = Math.Min(centre.Y - height / 2, stretchby.centre.Y - stretchby.height / 2);
double newy2 = Math.Max(centre.Y + height / 2, stretchby.centre.Y + stretchby.height / 2);
double newz1 = Math.Min(centre.Z - depth / 2, stretchby.centre.Z - stretchby.depth / 2);
double newz2 = Math.Max(centre.Z + depth / 2, stretchby.centre.Z + stretchby.depth / 2);
centre.X = (newx2 + newx1) / 2;
centre.Y = (newy2 + newy1) / 2;
centre.Z = (newz2 + newz1) / 2;
width = newx2 - newx1;
height = newy2 - newy1;
depth = newz2 - newz1;
width2e = width / 2 + ToyTracer.EPSILON;
height2e = height / 2 + ToyTracer.EPSILON;
depth2e = depth / 2 + ToyTracer.EPSILON;
xmin = centre.X - width / 2;
ymin = centre.Y - height / 2;
zmin = centre.Z - depth / 2;
xmax = centre.X + width / 2;
ymax = centre.Y + height / 2;
zmax = centre.Z + depth / 2;
}
public bool Disjoint(AllignedBox other)
{
double widthav = (width + other.width) / 2;
if (Math.Abs(centre.X - other.centre.X) > widthav)
return true;
double heightav = (height + other.height) / 2;
if (Math.Abs(centre.Y - other.centre.Y) > heightav)
return true;
double depthav = (depth + other.depth) / 2;
if (Math.Abs(centre.Z - other.centre.Z) > widthav)
return true;
return false;
}
