The LengthSquared property of the Vector4 struct provides the squared length (or magnitude) of the vector. This is calculated as the sum of the squares of its components (x, y, z, w). It is often used in performance-sensitive code where the actual length is not required, as it avoids the computational cost of a square root operation.
Use the LengthSquared property when you need to compare vector lengths or when the exact length is not necessary. This property is read-only and can be accessed directly from an instance of Vector4.
Vector4 vector = new Vector4(3, 4, 5, 6); float squaredLength = vector.LengthSquared; // squaredLength will be 86 (3*3 + 4*4 + 5*5 + 6*6)