The result using Imagick is not symmetric as it should be and tends to bend more upward than downward.
Here is the input image:
Here is the Imagick code:
Code: Select all
<?php
// Timer function
function microtime_float()
{
list($utime, $time) = explode(" ", microtime());
return ((float)$utime + (float)$time);
}
echo "PHP Loop Imagick<br>";
// Input image name if used
$image = "testoutline1.png";
// Output image name
$output = "testbulge1_imagick.png";
// How many time to run
$run = "1";
// Setup default cycle time
$time = "";
// Start timer
$script_start = microtime_float();
// Loop through the code
For ( $i=1; $i <= $run; $i++ ){
try
{
$im = new Imagick();
$im->readImage( $image );
$im->setImageVirtualPixelMethod( Imagick::VIRTUALPIXELMETHOD_WHITE );
$im->setGravity( Imagick::GRAVITY_CENTER );
$im->setBackgroundColor( "white" );
$im->extentImage( 935, 169, 0, 0 );
$distortion = array( 0, 0, 0, 1, 0, 0, -0.1, 1.1 );
$im->distortImage( Imagick::DISTORTION_BARRELINVERSE, $distortion, false );
$im->trimImage(0);
$bordercolor = new ImagickPixel( "white" );
$im->borderImage( $bordercolor, 10, 10);
$page = array();
$page = $im->getImagePage();
$owidth = $page["width"];
$oheight = $page["height"];
$im->setImagePage( $owidth, $oheight, 0, 0);
$im->writeImage( $output );
}
catch(Exception $e)
{
echo $e->getMessage();
}
// End loop
}
// Stop timer
$script_end = microtime_float();
// Calculate the run time
$run_time = ( round( $script_end, 4 ) - round( $script_start, 4 ));
// Calculate the average run time
$average = $run_time/$run;
// Display the average run time
echo "<br><p><b>Average time = $average </b></p>";
// Delete the image created
//unlink($output);
echo "<img src=\"$output\" border=1>";
?>
Here is the PHP exec equivalent code:
Code: Select all
<?php
// Timer function
function microtime_float()
{
list($utime, $time) = explode(" ", microtime());
return ((float)$utime + (float)$time);
}
echo "PHP Loop exec command<br>";
// Input image name if used
$image = "testoutline1.png";
// Output image name
$output = "testbulge1_exec.png";
// How many time to run
$run = "1";
// Setup default cycle time
$time = "";
// Command to use
$cmd = "-virtual-pixel white -gravity center -background white -extent 935x169 -distort barrelinverse \"0 0 0 1 0 0 -0.1 1.1\" -trim -bordercolor white -border 10 +repage ";
// Start timer
$script_start = microtime_float();
// Loop through the code
For ( $i=1; $i <= $run; $i++ ){
// Run the command
// Create an empty error array
$out = array();
exec("/usr/local/bin/convert $image $cmd $output", $out, $returnval);
// End loop
}
// Stop timer
$script_end = microtime_float();
// Calculate the run time
$run_time = ( round( $script_end, 4 ) - round( $script_start, 4 ));
// Calculate the average run time
$average = $run_time/$run;
// Display the average run time
echo "<br><p><b>Average time = $average </b></p>";
// Delete the image created
//unlink($output);
echo "<img src=\"$output\" border=1>";
?Here is the result:
Perhaps Imagick has not kept up with possible edits that Anthony has made to the -distort barrelinverse code. Or perhaps there is an error in dealing with a negative coefficient as in this case.
I hope the Imagick developer, mkoppanen, can take a look and comment.
Thanks
Fred
P.S. Tests were using: PHP 5.1.6; Imagick 3.00RC1 and IM 6.6.2-9 and 6.6.3-0