/**
* Draws a polygon on the handle
*
* @param GD-object $handle The handle on which the polygon is drawn
* @param Zend_Image_Action_DrawPolygon $polygonObject The object that with all info
*/
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_DrawPolygon $polygonObject) { // As of ZF2.0 / PHP5.3, this can be made static.
$handle = $adapter->getHandle();
$points = $this->_parsePoints($polygonObject->getPoints());
if(($pattern = $polygonObject->getStrokeDashPattern())!== null) {
$color = imagecolorallocate($handle, 0, 255, 0);
$array = array();
foreach($pattern as $amountOfPixels) {
$array = array_merge($array, array_fill(0, $amountOfPixels, $color));
$array = array_merge($array, array_fill(0, $polygonObject->getStrokeDashOffset(), IMG_COLOR_TRANSPARENT));
}
if(count($array) > 0) {
imagesetstyle($handle, $array);
}
}
if($polygonObject->isFilled()) {
//@TODO: extract this to Zend_Image_Adapter_Gd_Action_ActionAbstract ?
$color = $polygonObject->getFillColor()->getRgb();
$colorRes = imagecolorallocatealpha($handle,
$color['red'],
$color['green'],
$color['blue'],
$polygonObject->getFillAlpha());
imagefilledpolygon($handle, $points, count($points)/2, $colorRes);
}
$points = $polygonObject->getPoints();
$start = current($points);;
$line = new Zend_Image_Action_DrawLine();
while(current($points)!==false) {
$from = current($points);
$to = next($points);
if($to===false) {
if(!$polygonObject->isClosed()) {
break;
} else {
$to = $start;
}
}
$line->from($from);
$line->to($to);
$line->perform($adapter);
}
}
/**
* 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);
}
/**
* 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;
}
