class Point 
{
    var $x;
    var $y;
    var $color;

    function Point($x = 0, $y = 0) 
    {
        $this->moveTo($x, $y);
    }

    function moveTo($x, $y) {
        $this->x = $x;
        $this->y = $y;
    }

    function transposeX($amount) {
        $this->x += $amount;
    }

    function transposeY($amount) {
        $this->y += $amount;
    }

    function transpose($xAmount, $yAmount) {
        $this->transposeX($xAmount);
        $this->transposeY($yAmount);
    }

    function setColor($color) {$this->color = $color;}
    function draw() {…}
}