public function setTransparency()
    {
        imagealphablending($this->resource, false);
        imagesavealpha($this->resource, true);

        return $this;
    }
public function setTransparency()
    {
        imagealphablending($this->resource, false);
        imagesavealpha($this->resource, true);

        return $this;
    }
public function setTransparency ( ) { imagealphablending ( $ this -> resource , false ) ; imagesavealpha ( $ this -> resource , true ) ; return $ this ; }
Sets the background color to be transparent

@return Eden\Image\Index
Sets the background color to be transparent