public static Bounding.Box Transform(Bounding.Box bounding, Matrix transformation)
{
return(new Bounding.Box
{
LocalBoundingBox = bounding.LocalBoundingBox,
Transformation = bounding.Transformation * transformation
});
}
public static bool Intersect(Bounding.Box a, Bounding.Line b, out object intersection)
{
intersection = null;
Vector3 v = b.P1 - b.P0;
RayIntersection rOut = new RayIntersection();
return(Intersect(a, new Ray(b.P0, Vector3.Normalize(v)), out rOut) && rOut.Distance < v.Length());
}
// ----------------------------------------------------------------------------------------------
// -- Box ---------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------------
public static bool Intersect(Bounding.Box a, Ray b, out object intersection)
{
var r = new RayIntersection();
intersection = r;
Matrix invTransformation = Matrix.Invert(a.Transformation);
var newRay = new Ray(
Vector3.TransformCoordinate(b.Position, invTransformation),
Vector3.Normalize(Vector3.TransformNormal(b.Direction, invTransformation)));
bool hit = BoundingBox.Intersects(a.LocalBoundingBox, newRay, out r.Distance);
if (hit)
{
var newPos = Vector3.TransformCoordinate(newRay.Position + newRay.Direction * r.Distance,
a.Transformation);
r.Distance = (newPos - b.Position).Length();
}
return(hit);
}
public static bool Intersect(RectangleF a, Bounding.Box b, out object intersection)
{
return(Intersect(a, b.ToContainerBox(), out intersection));
}
public static BoundingBox BoundingToBox(Bounding.Box a)
{
return(a.ToContainerBox());
}
public static RSpatialRelation Relation(RectangleF a, Bounding.Box b)
{
return(Relation(a, BoundingBoxToRectangleF(b.ToContainerBox())));
}