Function vm_NormalizeVectorFast

vecmat/vector.cpp:453–468

Normalize a vector using an approximation of the magnitude Returns: the magnitude before normalization

// Normalize a vector using an approximation of the magnitude
// Returns:  the magnitude before normalization
float vm_NormalizeVectorFast(vector *a) {
  float mag;

  mag = vm_GetMagnitudeFast(a);

  if (mag == 0.0) {
    a->x = a->y = a->z = 0.0;
    return 0;
  }

  a->x = (a->x / mag);
  a->y = (a->y / mag);
  a->z = (a->z / mag);

  return mag;
}

// Computes the distance from a point to a plane.
// Parms:	checkp - the point to check