docs: static public void direction(GrayF32 derivX , GrayF32 derivY , GrayF32 angle )
  	{
  		InputSanityCheck.checkSameShape(derivX,derivY);
  		angle.reshape(derivX.width,derivX.height);
  
  		if(BoofConcurrency.USE_CONCURRENT ) {
  			ImplGradientToEdgeFeatures_MT.direction(derivX,derivY,angle);
  		} else {
  			ImplGradientToEdgeFeatures.direction(derivX,derivY,angle);
  		}
  	}