/**
* {@inheritdoc}
*/
protected function doGenerate(CanvasInterface $canvas)
{
$width = $canvas->getWidth();
$height = $canvas->getHeight();
$ry = $height > $width ? 1 : $width / $height;
$rx = $width > $height ? 1 : $height / $width;
$n = min($width, $height);
$poly = new Polygon();
$poly->fill(true);
for ($i = 0; $i < $n; $i += $this->getStep() + 1) {
$coordinates = array(new Coordinate($width / 2, $i * $rx - 0.5 * $height), new Coordinate($i * $ry - 0.5 * $width, $height / 2), new Coordinate($width / 2, 1.5 * $height - $i * $rx), new Coordinate(1.5 * $width - $i * $ry, $height / 2));
$poly->setCoordinate(new \ArrayObject($coordinates))->setColor($this->getColor($i / $n))->draw($canvas);
}
}
/**
* @expectedException \RuntimeException
*/
public function testDrawThrowRuntimeException()
{
$poly = new Polygon();
$poly->draw($this->getCanvas());
}
