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<?php
namespace Scene7\Commands;
use Scene7\Definitions\PerspectiveOptions;
trait Perspective
{
public function setPerspective($topLeft, $topRight, $bottomLeft, $bottomRight, $resamplingMode = null, $normalized = false)
{
$topLeft = (float) $topLeft;
$topRight = (float) $topRight;
$bottomLeft = (float) $bottomLeft;
$bottomRight = (float) $bottomRight;
$perspective = $topLeft . ',' . $topRight . ',' . $bottomLeft . ',' . $bottomRight;
if ($resamplingMode !== null && $this->isAllowedPerspectiveResamplingMode($resamplingMode)) {
$perspective .= $resamplingMode;
}
$this->addCommand([$normalized ? 'perspectiveN' : 'perspective' => $perspective]);
return $this;
}
public function setPerspectiveNormalized($topLeft, $topRight, $bottomLeft, $bottomRight, $resamplingMode = null)
{
return $this->setPerspective($topLeft, $topRight, $bottomLeft, $bottomRight, $resamplingMode, true);
}
protected function isAllowedPerspectiveResamplingMode($mode)
{
if (substr($mode, 0, 3) === 'R3T') {
$jitter = (int) substr($mode, 3);
return $jitter >= 0 || $jitter <= 200;
}
return in_array($mode, $this->getAllowedPerspectiveResamplingMode());
}
public function getAllowedPerspectiveResamplingMode()
{
return [
PerspectiveOptions::R1,
PerspectiveOptions::R2,
PerspectiveOptions::R3,
];
}
}