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(PECL imagick 2.0.0)
ImagickDraw::ellipse — Draws an ellipse on the image
Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Argumente zur Verfügung.
Draws an ellipse on the image.
Es wird kein Wert zurückgegeben.
<?php
/**
* Please note that if you use a stroke. ( Imagick::setStrokeWidth( 2 ) ) the
* stroke is drawn outside the ellipse dimensions.
*
* @param float $ox - Offset X, distance from the center of the ellipse till the left border of the image
* @param float $oy - Offset Y, distance from the center of the ellipse till the top of the image
* @param float $rx - X radius
* @param float $ry - Y radius
* @param float float $start - Starting angle in degrees.
* @param float float $end - End angle in degrees.
*
*/
ImagickDraw::ellipse( float $ox , float $oy , float $rx , float $ry , float $start , float $end );
?>
Example of drawing a full ellipse (from 0, 360) and outputting it as a PNG.
Do note, that this is by default anti-aliased unlike the GD functions which only support it on lines that aren't on a transparent background.
<?php
$width = 200;
$height = 100;
$border = 2;
$img = new Imagick();
$img->newImage( $width, $height, new ImagickPixel( 'transparent' ) );
$draw = new ImagickDraw();
$draw->setStrokeColor( new ImagickPixel( 'black' ) );
$draw->setStrokeWidth( 2 );
$draw->setFillColor( new ImagickPixel( 'transparent' ) );
//Substract the border from the radius so it doesn't fall outside the screen.
$draw->ellipse( $width/2, $height/2, ($width/2)-$border, ($height/2)-$border, 0, 360 );
$img->drawImage( $draw );
$img->setImageFormat( "png" );
header( "Content-Type: image/png" );
echo $img;
?>
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