/** return a 3D scale vector calculated from this matrix (where each component is the magnitude of a row vector) with error Tolerance. */
public FVector GetScaleVector(float Tolerance = Const.SMALL_NUMBER)
{
FVector Scale3D = new FVector(1, 1, 1);
// For each row, find magnitude, and if its non-zero re-scale so its unit length.
for (int i = 0; i < 3; i++)
{
float SquareSum = (this[i, 0] * this[i, 0]) + (this[i, 1] * this[i, 1]) + (this[i, 2] * this[i, 2]);
if (SquareSum > Tolerance)
{
Scale3D[i] = (float)FMath.Sqrt(SquareSum);
}
else
{
Scale3D[i] = 0.0f;
}
}
return(Scale3D);
}
/**
* Get the length of this quaternion.
*
* @return The length of this quaternion.
*/
public float Size()
{
return((float)(FMath.Sqrt(X * X + Y * Y + Z * Z + W * W)));
}
/**
* Euclidean distance between two points.
*
* @param V1 The first point.
* @param V2 The second point.
* @return The distance between two points.
*/
public static float Dist(FVector V1, FVector V2)
{
return((float)FMath.Sqrt((V2.X - V1.X) * (V2.X - V1.X) + (V2.Y - V1.Y) * (V2.Y - V1.Y) + (V2.Z - V1.Z) * (V2.Z - V1.Z)));
}
/**
* Calculates normalized version of vector without checking for zero length.
*
* @return Normalized version of vector.
* @see GetSafeNormal()
*/
public FVector GetUnsafeNormal()
{
float Scale = (float)(1.0f / FMath.Sqrt(X * X + Y * Y + Z * Z));
return(new FVector(X * Scale, Y * Scale, Z * Scale));
}
/**
* Get the length of the 2D components of this vector.
*
* @return The 2D length of this vector.
*/
public float Size2D()
{
return((float)FMath.Sqrt(X * X + Y * Y));
}
/**
* Get the length (magnitude) of this vector.
*
* @return The length of this vector.
*/
public float Size()
{
return((float)FMath.Sqrt(X * X + Y * Y + Z * Z));
}