public function translateY($deltaY)
	{
		foreach ($this->points as $point) {
			$point->translateY($deltaY);
		}
		$this->start->translateY($deltaY);
		return $this;
	}
public function translateY($deltaY)
	{
		foreach ($this->points as $point) {
			$point->translateY($deltaY);
		}
		$this->start->translateY($deltaY);
		return $this;
	}
public function translateY ( $ deltaY ) { foreach ( $ this -> points as $ point ) { $ point -> translateY ( $ deltaY ) ; } $ this -> start -> translateY ( $ deltaY ) ; return $ this ; }
Translates points along the Y-axis.

@param  float  $deltaX
@param  float  $deltaY
Translates points along the Y - axis .