Legacy ImageMagick Discussions Archive

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<?php
//BOC Image Process

    if (extension_loaded('imagick')) {
// imagick installed
//#####################################################

//BOC thumbnail process
//

// Check if the thumbnails directory exists, if not create it with access rights set to 0775 
    $tn_dir = $this->destination . '/thumbnails/';
//    
    if (is_dir($tn_dir) || @mkdir($tn_dir,0775)) {return TRUE;}

// Delete old thumbnail if it exists
		$old_thumbnail = $tn_dir . $this->filename;
//The function replace_extension is defined at the bottom
    replace_extension($old_thumbnail, 'png');
		if(file_exists($old_thumbnail)) { 
    unlink($old_thumbnail); 
    clearstatcache();
    }

// Create and save a new thumbnail
// Load the image
		$thumbnail = $tn_dir . $this->filename;

// Create an new Imagick object 
    $image = new Imagick($thumbnail);
// Strip out meta data/check if it's an image
    if( $image->stripImage() == true ) {
// The file is an image, continue process

//  Convert to png
    $image->setImageFormat( "png" );
// Get the original dimensions
      $width = $thumbnail->getImageWidth();
      $height = $thumbnail->getImageHeight();
      $bestfit = false;

// Set the thumbnails dimensions (these are treated as maximums and aspect ratio is maintained)
      $thumbnailWidth = max(0,SMALL_IMAGE_WIDTH);
      $thumbnailHeight = max(0,SMALL_IMAGE_HEIGHT);

// determine what to fit to
      if ($thumbnailWidth*$thumbnailHeight != 0) {
      $bestfit = true;
      } else {
      $fitDim = $thumbnailWidth > $thumbnailHeight;
      }
      
// Create thumbnail
      if ($bestfit == true) { 
      $image->thumbnailImage( intval($thumbnailWidth),intval($thumbnailHeight, TRUE)); 
      } else {
      $image->thumbnailImage( $fitDim ? intval($thumbnailWidth) : 0, $fitDim ? 0 : intval($thumbnailHeight), FALSE);
      }
// Make it sharper
      $image->unsharpMaskImage(0 , 0.5 , 1 , 0.05); 

// Save thumbnail
      $image->writeImage($thumbnail);

//Destroy the Imagick object and frees all resources associated with it.
      $image->destroy(); 
    }
//
//EOC thumbnail process
//#
//The above do not work. And, causes the below resize to fail.
//#####################################################

//BOC product image process

// Get the image
      $image_file = $this->destination . $this->filename;
// create new Imagick object
      $image = new Imagick($image_file);
      if( $image->stripImage() == true ) {
// It's an image, continue process

// Set memory limit to 8 MB 
      $image->setResourceLimit( Imagick::RESOURCETYPE_MEMORY, 8 );

//Get the original image type
      $imagePathParts = pathinfo($image_file);
      $image_type = $imagePathParts['extension'];

// Convert to png format (used for simplified processing and better quality)
          $image->setImageFormat( "png" );  

// Set Max vert or horiz resolution
          $maxsize = 480;// 320 is exactly 20em and 480 is exactly 30em (half the 960 grid)
// Resizes to whichever is larger, width or height
        if($image->getImageHeight() <= $image->getImageWidth())
          {
// Resize image using the lanczos resampling algorithm based on width
        $image->resizeImage($maxsize,0,Imagick::FILTER_LANCZOS,0.75);
// Resize image using the catrom resampling algorithm based on width, faster than lanczos
//          $image->resizeImage($maxsize,0,Imagick::FILTER_CATROM,0.75); <--------------------did not work, even without thumbnail code
          } else {
// Resize image using the lanczos resampling algorithm based on height
        $image->resizeImage(0,$maxsize,Imagick::FILTER_LANCZOS,0.75);
// Resize image using the catrom resampling algorithm based on height, faster than lanczos
//          $image->resizeImage(0,$maxsize,Imagick::FILTER_CATROM,0.75); <--------------------did not work, even without thumbnail code
          }

// Make it sharper
          $image->unsharpMaskImage(0 , 0.5 , 1 , 0.05); //For center part
          $image->sharpenimage( 0.8, 0.6);
          $image->contrastImage( 5 );

// Set compression type for png's
        $image->setInterlaceScheme(Imagick::INTERLACE_PNG);
        $image->setCompression(Imagick::COMPRESSION_ZIP);
        $image->setImageCompressionQuality(90);      

// Convert back to original type
          $image->setImageFormat( $image_type );

// Write resultant image to the original uploaded file
          $image->writeImage($image_file);

//Destroy the Imagick object and free all resources associated with it.
          $image->destroy();
//    
//EOC product image process
//
  }
}
//EOC Image Process
//#
    function replace_extension($filename, $new_extension) {
      $info = pathinfo($filename);
      return $info['filename'] . '.' . $new_extension;
    }
?>

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// Get the original dimensions
      $width = $thumbnail->getImageWidth();
      $height = $thumbnail->getImageHeight();
      $bestfit = false;

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$image->thumbnailImage( $fitDim ? intval($thumbnailWidth) : 0, $fitDim ? 0 : intval($thumbnailHeight), FALSE);

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// oldpath
//      $thumbnail = $this->destination . $this->filename;
// newpath
 		$thumbnail = $tn_dir . $this->filename;
// Tried:
// $thumbnail->setImageFormat( "png" );// PHP Fatal error:  Call to a member function setImageFormat() on a non-object
// During the above process, the image was converted to format 'png'. How do I save the image in this format?
// Save thumbnail
      $image->writeImage($thumbnail);

//Destroy the Imagick object and frees all resources associated with it.
      $image->destroy(); 
//
//EOC thumbnail process

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// Piece of code found on the web - probaly not quite how I would do it
$new_name = substr_replace($thumbnail , 'png', strrpos($thumbnail , '.') +1) 
$image->writeImage($new_name);