/**
* Required by vignette to generate the propper colors.
*
* @param float $size Size of the vignette, between 0 and 10. Low is sharper.
* @param float $level Vignete transparency, between 0 and 1
* @param int $x X position of the pixel.
* @param int $y Y position of the pixel.
* @param array &$rgb Current pixel olor information.
* @return void
* @codeCoverageIgnore
*/
protected function vignetteEffect($size, $level, $x, $y, &$rgb)
{
$l = sin(M_PI / $this->width * $x) * sin(M_PI / $this->height * $y);
$l = pow($l, Normalize::fitInRange($size, 0, 10));
$l = 1 - Normalize::fitInRange($level, 0, 1) * (1 - $l);
$rgb['red'] *= $l;
$rgb['green'] *= $l;
$rgb['blue'] *= $l;
}
/**
* @expectedException Elboletaire\Watimage\Exception\InvalidArgumentException
*/
public function testWatermarkSizeFail()
{
Normalize::watermarkSize('not valid');
}