lixlpixel php code snippets | image editing


Translucent Text 
 
 Translucent text is not as simple as outlining or shadowing, but it's not particularly hard.  A translucent image is just something partially invisible, or clear.  This is done by drawing the image onto a buffer, editing the buffer, and then merging the buffer back onto the original image. 
 
 <?php 
 function imagettftexttransparent (& $im ,$size ,$angle ,$x ,$y ,& $col ,$fontfile ,$text ,$pct )
 { 
     $im_w = imagesx ($im ); // Get the image width 
     $im_h = imagesy ($im ); // Get the image height 
     $new = imagecreate ($im_w ,$im_h ); // Create a buffer 
     imagesetpixel ($im ,$im_w -1,0,$col ); // Set a pixel down, so we can easily get the color 
     $index = imagecolorat ($im ,$im_w -1,0); // Get the color at that pixel 
     $rgb = imagecolorsforindex ($im ,$index ); // Get the index of that color 
     $r = $rgb ["red" ]; // Get the red value 
     $g = $rgb ["green" ]; // Get the green value 
     $b = $rgb ["blue" ]; // Get the blue value 
     $color = imagecolorallocate ($new ,$r ,$g ,$b ); // Allocate this color on the buffer 
     $copy = imagecopy ($new ,$im ,0,0,0,0,$im_w ,$im_h ); // Copy the old image onto the buffer 
     $text = imagettftext ($new ,$size ,$angle ,$x ,$y ,$color ,$fontfile ,$text ); // Draw the text 
     $merge = imagecopymerge ($im ,$new ,0,0,0,0,$im_w ,$im_h ,$pct ); // Copy the buffer back onto the original image 
     imagedestroy ($new ); // Destroy the buffer 
 }
 ?>