draw multiple circles with imagemagick - php

Question

I am trying to draw multiple circles on a background image, but im having a hard time figuring out how to do it.
Ive tried passing multiple imageMagick instances to the draw function but did not work.
So then I tried creating a new image object, and setting it to transparent.
Then i tried the drawing an image on top of that, but i cant get it to adjust the opacity at all.
Along the lines of what i am trying to do is this:
<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL | E_STRICT);
function drawImage(Imagick $im) {
// $im->setCompressionQuality(100);
$im->setImageFormat("jpg");
header("Content-Type: image/" . $im->getImageFormat());
echo $im;
exit;
}
// define circle mask
$layer = new Imagick('spc.jpg');
//now we need the height and width.
$width = $layer->getImageWidth();
$height = $layer->getImageHeight();
$x = $width/2;
$y = $height/2;
$endX = $x + 150;
$endY = $y + 150;
$circle = new ImagickDraw();
$circle->setFillColor("#FFFF00");
$circle->circle($x, $y, $endX, $endY);
//$layer->drawImage($circle, $circle2);
$circle2 = new ImagickDraw();
$circle2->setFillColor("#0000FF");
$circle2->circle(0, 0, $x, $y);
$layer->drawImage($circle, $circle2);
drawImage($layer);
?>

Answer 1

drawImage shoud get only 1 parameter. try this at the final lines:
$layer->drawImage($circle);
$layer->drawImage($circle2);
drawImage($layer);

Answer 2

I think/hope this is nearer to what you are aiming for... I have hacked around a bit because my environment is different from yours - but you should be able to see what I have done.
The main difference is that you need to set the fill colour to transparent and the stroke colour to whatever colour you want the circle outlines to be drawn in. Also, I have reused your Draw object rather than creating additional ones for each circle.
#!/usr/local/bin/php
<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL | E_STRICT);
function drawImage(Imagick $im) {
$im->setImageFormat("jpg");
$im->writeImage('out.jpg');
exit;
}
// define circle mask
$layer = new Imagick();
$layer->newImage(500,250,new ImagickPixel('white'));
$layer->borderImage('#6000ff',3,3);
//now we need the height and width.
$width = $layer->getImageWidth();
$height = $layer->getImageHeight();
$x = $width/2;
$y = $height/2;
$circle = new ImagickDraw();
$circle->setFillColor('transparent'); // transparent
$circle->setStrokeColor("#0000FF"); // blue
$circle->circle($x, $y, $x + 25, $y);
$layer->drawImage($circle);
$circle->setStrokeColor("#00FF00"); // green
$circle->circle($x, $y, $x + 50, $y);
$layer->drawImage($circle);
$circle->setStrokeColor("#FF00FF"); // purple
$circle->circle($x, $y, $x +75, $y);
$layer->drawImage($circle);
$circle->setStrokeColor("#FF0000"); // red
$circle->circle($x, $y, $x +100, $y);
$layer->drawImage($circle);
drawImage($layer);
?>