php man page for imageantialias

IMAGEANTIALIAS(3)							 1							 IMAGEANTIALIAS(3)

imageantialias - Should antialias functions be used or not

SYNOPSIS
       bool imageantialias (resource  $image, bool  $enabled)

DESCRIPTION
	Activate  the fast drawing antialiased methods for lines and wired polygons. It does not support alpha components. It works using a direct
       blend operation. It works only with truecolor images.

	Thickness and styled are not supported.

	Using antialiased primitives with transparent background color can end with some unexpected results. The blend method uses the	background
       color as any other colors. The lack of alpha component support does not allow an alpha based antialiasing method.

PARAMETERS
	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $enabled
		- Whether to enable antialiasing or not.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      A comparison of two lines, one with anti-aliasing switched on

	      <?php
	      // Setup an anti-aliased image and a normal image
	      $aa = imagecreatetruecolor(400, 100);
	      $normal = imagecreatetruecolor(200, 100);

	      // Switch antialiasing on for one image
	      imageantialias($aa, true);

	      // Allocate colors
	      $red = imagecolorallocate($normal, 255, 0, 0);
	      $red_aa = imagecolorallocate($aa, 255, 0, 0);

	      // Draw two lines, one with AA enabled
	      imageline($normal, 0, 0, 200, 100, $red);
	      imageline($aa, 0, 0, 200, 100, $red_aa);

	      // Merge the two images side by side for output (AA: left, Normal: Right)
	      imagecopymerge($aa, $normal, 200, 0, 0, 0, 200, 100, 100);

	      // Output image
	      header('Content-type: image/png');

	      imagepng($aa);
	      imagedestroy($aa);
	      imagedestroy($normal);
	      ?>

	      The  above  example  will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example : A comparison of two lines, one with
	      anti-aliasing switched on

NOTES
SEE ALSO
       imagecreatetruecolor(3).

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