docs: public static void applyDistortion(Point2D_F64 normPt, double[] radial, double t1 , double t2 )
  	{
  		final double x = normPt.x;
  		final double y = normPt.y;
  
  		double a = 0;
  		double r2 = x*x + y*y;
  		double r2i = r2;
  		for( int i = 0; i < radial.length; i++ ) {
  			a += radial[i]*r2i;
  			r2i *= r2;
  		}
  
  		normPt.x = x + x*a + 2*t1*x*y + t2*(r2 + 2*x*x);
  		normPt.y = y + y*a + t1*(r2 + 2*y*y) + 2*t2*x*y;
  	}