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public SubtractedBy ( |
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public static Plane BuildFromVertices(Vector3D a, Vector3D b, Vector3D c)
{
Plane p = new Plane ();
Vector3D edgeA = c.SubtractedBy (a);
Vector3D edgeB = b.SubtractedBy (a);
Vector3D cross = edgeA.Cross (edgeB);
// !! Important: inverted to be valid in left-handed space
// TODO: make this work in either handed-ness automatically
cross.Invert();
p.Normal = cross.Normalized();
p.D = p.Normal.Dot (a);
return p;
}
public static void BuildFromVertices(Vector3D a, Vector3D b, Vector3D c, Plane outPlane)
{
Vector3D edgeA = c.SubtractedBy(a, tempVectorA);
Vector3D edgeB = b.SubtractedBy(a, tempVectorB);
Vector3D cross = edgeA.Cross(edgeB, tempVectorC);
// !! Important: inverted to be valid in left-handed space
// TODO: make this work in either handed-ness automatically
cross.Invert();
outPlane.Normal.Copy(cross);
outPlane.Normal.Normalize();
outPlane.D = outPlane.Normal.Dot(a);
float padding = 0.15f;
outPlane.PlaneBounds.min.X = Mathf.Min(a.X, b.X, c.X) - padding;
outPlane.PlaneBounds.min.Y = Mathf.Min(a.Y, b.Y, c.Y) - padding;
outPlane.PlaneBounds.min.Z = Mathf.Min(a.Z, b.Z, c.Z) - padding;
outPlane.PlaneBounds.max.X = Mathf.Max(a.X, b.X, c.X) + padding;
outPlane.PlaneBounds.max.Y = Mathf.Max(a.Y, b.Y, c.Y) + padding;
outPlane.PlaneBounds.max.Z = Mathf.Max(a.Z, b.Z, c.Z) + padding;
}
public Vector3D Lerped(Vector3D dest, float t)
{
return new Vector3D(this).AddedWith(dest.SubtractedBy (this).MultipliedBy (t));
}
