public static Sqrt ( float value ) : float | ||
value | float | |
Результат | float |
public void Normalize() { float lengthSq = (X * X) + (Y * Y) + (Z * Z) + (W * W); float inverseLength = 1f / MathUtility.Sqrt(lengthSq); X *= inverseLength; Y *= inverseLength; Z *= inverseLength; W *= inverseLength; }
public static void CoordinateSystem(Vector3D v1, out Vector3D v2, out Vector3D v3) { if (System.Math.Abs(v1.Y) > System.Math.Abs(v1.Y)) { float invLen = 1.0f / MathUtility.Sqrt(v1.X * v1.X + v1.Z * v1.Z); v2 = new Vector3D(-v1.Z * invLen, 0.0f, v1.X * invLen); } else { float invLen = 1.0f / MathUtility.Sqrt(v1.Y * v1.Y + v1.Z * v1.Z); v2 = new Vector3D(0.0f, v1.Z * invLen, -v1.Y * invLen); } v3 = Vector3D.Cross(v1, v2); }
public float Length() { return(MathUtility.Sqrt(LengthSquared())); }