/**
* computes angle(in radian) between two vectors
*
* @return angle in radians
*/
public static final double calculateAngle(Vector3D v1, Vector3D v2) {
return Math.acos(Vector3D.dotProduct(v1.getUnitVector(), v2.getUnitVector()));
}
/** @return Component of this vector parallel to given vector */
public Vector3D Get_Parallel_Component(Vector3D dirVector3D) {
return dirVector3D.scale(this.DotProduct(dirVector3D.getUnitVector()));
}
/**
* test if the two vectors are orthogonal
*
* @return true if the vectors are orthogonal
*/
public static final boolean checkOrthogonal(Vector3D v1, Vector3D v2) {
return Vector3D.dotProduct(v1.getUnitVector(), v2.getUnitVector()) < EPSILON;
}