/**
* Draw a line on the image, returns the GD-handle
*
* @param GD image resource $handle Image to work on
* @param Zend_Image_Action_DrawLine $lineObject The object containing all settings needed for drawing a line.
* @return void
*/
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_DrawLine $lineObject)
{
$handle = $adapter->getHandle();
$strokeColor = $lineObject->getStrokeColor();
$color = $strokeColor->getRgb();
$colorAlphaAlloc = imagecolorallocatealpha($handle, $color['red'], $color['green'], $color['blue'], $lineObject->getStrokeAlpha());
if ($lineObject->getStrokeWidth() == 1) {
// Simple line
imageline($handle, $lineObject->getPointStart()->getX(), $lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getX(), $lineObject->getPointEnd()->getY(), $colorAlphaAlloc);
} elseif ($lineObject->getPointStart()->getX() == $lineObject->getPointEnd()->getX() || $lineObject->getPointStart()->getY() == $lineObject->getPointEnd()->getY()) {
// Simple thick line
$x1 = round(min($lineObject->getPointStart()->getX(), $lineObject->getPointEnd()->getX()) - ($lineObject->getStrokeWidth() / 2 - 0.5));
$y1 = round(min($lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getY()) - ($lineObject->getStrokeWidth() / 2 - 0.5));
$x2 = round(max($lineObject->getPointStart()->getX(), $lineObject->getPointEnd()->getX()) + ($lineObject->getStrokeWidth() / 2 - 0.5));
$y2 = round(max($lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getY()) + ($lineObject->getStrokeWidth() / 2 - 0.5));
if ($lineObject->isFilled()) {
imagefilledrectangle($handle, $x1, $y1, $x2, $y2, $colorAlphaAlloc);
} else {
imagerectangle($handle, $x1, $y1, $x2, $y2, $colorAlphaAlloc);
}
} else {
// Not horizontal nor vertical thick line
$polygonObject = new Zend_Image_Action_DrawPolygon();
$slope = ($lineObject->getPointEnd()->getY() - $lineObject->getPointStart()->getY()) / ($lineObject->getPointEnd()->getX() - $lineObject->getPointStart()->getX());
// y = ax + b
$a = ($lineObject->getStrokeWidth() / 2 - 0.5) / sqrt(1 + pow($slope, 2));
$points = array(new Zend_Image_Point(round($lineObject->getPointStart()->getX() - (1 + $slope) * $a), round($lineObject->getPointStart()->getY() + (1 - $slope) * $a)), new Zend_Image_Point(round($lineObject->getPointStart()->getX() - (1 - $slope) * $a), round($lineObject->getPointStart()->getY() - (1 + $slope) * $a)), new Zend_Image_Point(round($lineObject->getPointEnd()->getX() + (1 + $slope) * $a), round($lineObject->getPointEnd()->getY() - (1 - $slope) * $a)), new Zend_Image_Point(round($lineObject->getPointEnd()->getX() + (1 - $slope) * $a), round($lineObject->getPointEnd()->getY() + (1 + $slope) * $a)));
//Draw polygon
$polygonObject = new Zend_Image_Action_DrawPolygon(array('points' => $points, 'strokeColor' => $strokeColor));
$handler = new Zend_Image_Adapter_Gd_Action_DrawPolygon();
$handle = $handler->perform($adapter, $polygonObject);
}
return $handle;
}
/**
* Draw a line on the image, returns the GD-handle
*
* @param Zend_Image_Adapter_ImageMagick image resource $handle Image to work on
* @param Zend_Image_Action_DrawLine $lineObject The object containing all settings needed for drawing a line.
* @return void
*/
public function perform(Zend_Image_Adapter_ImageMagick $adapter, Zend_Image_Action_DrawLine $lineObject)
{
$handle = $adapter->getHandle();
$draw = new ImagickDraw();
$draw->setStrokeWidth($lineObject->getStrokeWidth());
$color = $lineObject->getStrokeColor();
$draw->setStrokeColor((string) $color);
$draw->setStrokeOpacity($lineObject->getStrokeAlpha());
$draw->line($lineObject->getPointStart()->getX(), $lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getX(), $lineObject->getPointEnd()->getY());
$handle->drawImage($draw);
}
