/**
* test if the two vectors are collinear
*
* @param v1 : first vector to be checked
* @param v2 : second vector to be checked
* @return true if the vectors are colinear
*/
public static final boolean checkCollinear(Vector3D v1, Vector3D v2) {
return Vector3D.crossProduct(v1, v2).getLengthSq() < EPSILON;
}
