public BoundingBox3 Union(BoundingBox3 right)
{
if (IsEmpty)
{
return(right);
}
if (right.IsEmpty)
{
return(this);
}
return(new BoundingBox3
{
_min = new Vector3(Math.Min(Min.X, right.Min.X), Math.Min(Min.Y, right.Min.Y),
Math.Min(Min.Z, right.Min.Z)),
_max = new Vector3(Math.Max(Max.X, right.Max.X), Math.Max(Max.Y, right.Max.Y),
Math.Max(Max.Z, right.Max.Z))
});
}
public bool?GetSide(BoundingBox3 box)
{
var max = box.Max;
var min = box.Min;
var isXpos = Normal.X > 0;
var isYpos = Normal.Y > 0;
var isZpos = Normal.Z > 0;
var farmost = new Vector3(isXpos ? max.X : min.X, isYpos ? max.Y : min.Y, isZpos ? max.Z : min.Z);
var nearest = new Vector3(isXpos ? min.X : max.X, isYpos ? min.Y : max.Y, isZpos ? min.Z : max.Z);
var farSide = GetSide(farmost);
var nearSide = GetSide(nearest);
if (farSide != nearSide)
{
return(null);
}
return(farSide);
}
public void Union(ref BoundingBox3 right, out BoundingBox3 res)
{
if (IsEmpty)
{
res = right;
return;
}
if (right.IsEmpty)
{
res = this;
return;
}
res = new BoundingBox3
{
min =
new Vector3(Math.Min(Min.X, right.Min.X), Math.Min(Min.Y, right.Min.Y), Math.Min(Min.Z, right.Min.Z)),
max =
new Vector3(Math.Max(Max.X, right.Max.X), Math.Max(Max.Y, right.Max.Y), Math.Max(Max.Z, right.Max.Z))
};
}
public bool Contains(ref BoundingBox3 box)
{
return(box._min.X >= _min.X && box._max.X <= _max.X &&
box._min.Y >= _min.Y && box._max.Y <= _max.Y &&
box._min.Z >= _min.Z && box._max.Z <= _max.Z);
}
public bool Equals(BoundingBox3 other)
{
return(_min.Equals(other._min) && _max.Equals(other._max));
}
public bool Contains(ref BoundingBox3 box)
{
return((box.min.X >= min.X) && (box.max.X <= max.X) &&
(box.min.Y >= min.Y) && (box.max.Y <= max.Y) &&
(box.min.Z >= min.Z) && (box.max.Z <= max.Z));
}
public bool Equals(BoundingBox3 other)
{
return(min.Equals(other.min) && max.Equals(other.max));
}