iMagick PHP Conversion from SVG to JPG - php

Question

I am working in PHP and trying to use iMagick library to do an image conversion from SVG to JPG using shell_exec command. All seems to work, but the output JPG comes out very distorted. I almost get a feeling that the image is first converted and then resized.
I tried using "resize" and "scale" with same results.
Here is the command:
"-resize 800x800 -quality 95 image.svg image.jpg"
Any insights? Thanks in advance.

Answer 1

For anyone looking for a solution to this. Someone was able to come up with the following hack (with some of my edits):
createThumbnail("input.svg", "output.jpg", 500, 500, $cdn_container);
function createThumbnail($filename, $thname, $width=100, $height=100, $cdn=null)
{
try {
$extension = substr($filename, (strrpos($filename, '.')) + 1 - strlen($filename));
$fallback_save_path = "images/designs";
if ($extension == "svg") {
$im = new Imagick();
$svgdata = file_get_contents($filename);
$svgdata = svgScaleHack($svgdata, $width, $height);
//$im->setBackgroundColor(new ImagickPixel('transparent'));
$im->readImageBlob($svgdata);
$im->setImageFormat("jpg");
$im->resizeImage($width, $height, imagick::FILTER_LANCZOS, 1);
$raw_data = $im->getImageBlob();
(is_null($cdn)) ? file_put_contents($fallback_save_path . '/' . $thname, $im->getImageBlob()) : '';
} else if ($extension == "jpg") {
$im = new Imagick($filename);
$im->stripImage();
// Save as progressive JPEG
$im->setInterlaceScheme(Imagick::INTERLACE_PLANE);
$raw_data = $im->resizeImage($width, $height, imagick::FILTER_LANCZOS, 1);
// Set quality
// $im->setImageCompressionQuality(85);
(is_null($cdn)) ? $im->writeImage($fallback_save_path . '/' . $thname) : '';
}
if (!is_null($cdn)) {
$imageObject = $cdn->DataObject();
$imageObject->SetData( $raw_data );
$imageObject->name = $thname;
$imageObject->content_type = 'image/jpg';
$imageObject->Create();
}
$im->clear();
$im->destroy();
return true;
}
catch(Exception $e) {
return false;
}
}
function svgScaleHack($svg, $minWidth, $minHeight)
{
$reW = '/(.*<svg[^>]* width=")([\d.]+px)(.*)/si';
$reH = '/(.*<svg[^>]* height=")([\d.]+px)(.*)/si';
preg_match($reW, $svg, $mw);
preg_match($reH, $svg, $mh);
$width = floatval($mw[2]);
$height = floatval($mh[2]);
if (!$width || !$height) return false;
// scale to make width and height big enough
$scale = 1;
if ($width < $minWidth)
$scale = $minWidth/$width;
if ($height < $minHeight)
$scale = max($scale, ($minHeight/$height));
$width *= $scale*2;
$height *= $scale*2;
$svg = preg_replace($reW, "\${1}{$width}px\${3}", $svg);
$svg = preg_replace($reH, "\${1}{$height}px\${3}", $svg);
return $svg;
}