ProjectOntoLine() public static méthode

public static ProjectOntoLine ( Vector3D p, Vector3D lineP1, Vector3D lineP2 ) : Vector3D
p Vector3D
lineP1 Vector3D
lineP2 Vector3D
Résultat Vector3D
Euclidean2D Class Documentation
Exemple #1
0
        /// <summary>
        /// Normalize so P1 is closest point to origin,
        /// and direction vector is of unit length.
        /// </summary>
        public void NormalizeLine()
        {
            if (!this.IsLine)
            {
                return;
            }

            Vector3D d = P2 - P1;

            d.Normalize();

            P1 = Euclidean2D.ProjectOntoLine(new Vector3D(), P1, P2);

            // ZZZ - Could probably do something more robust to choose proper direction.
            if (Tolerance.GreaterThanOrEqual(Euclidean2D.AngleToClock(d, new Vector3D(1, 0)), Math.PI))
            {
                d *= -1;
            }

            P2 = P1 + d;
        }
Exemple #2
0
        /// <summary>
        /// Reflects a point in a line defined by two points.
        /// </summary>
        public static Vector3D ReflectPointInLine(Vector3D input, Vector3D p1, Vector3D p2)
        {
            Vector3D p = Euclidean2D.ProjectOntoLine(input, p1, p2);

            return(input + (p - input) * 2);
        }