";
$error_bad_len = "Wave length is numbers only. ";
##### Validate ampltude & wave length
if ( preg_match( "#[^0-9\-\.]#", "$wave_amplitude", $x) )
{ $error .= "$error_bad_amp"; }
if ( preg_match( "#[^0-9\-\.]#", "$wave_length", $x) )
{ $error .= "$error_bad_len"; }
if ( $error != "" )
{
echo "$errormsgtop";
echo "$error";
echo "$errormsgbottom";
exit;
}
# end validation
$wave_amplitude = (float)$wave_amplitude;
$wave_length = (float)$wave_length;
# make imagick object
$image = new Imagick($_SESSION[path]);
# if bgcolor entered then validate
if ($_GET[wave_bgcolor])
{
# trim input
$wave_bgcolor = trim($_GET[wave_bgcolor]);
## validate color
if ( !key_exists( "$wave_bgcolor", $color_names) && ( !preg_match( "@#[0-9a-f]{6}@i", $wave_bgcolor, $b) || strlen($wave_bgcolor) != 7 ) )
{ $error .= "Color is invalid."; }
# if invalid, error msg & exit
if ( $error != "")
{ echo "$errormsgtop $error $errormsgbottom";
exit;
}
## end validate
}
# if no color entered, set to transparent
else
{ $wave_bgcolor = "transparent"; }
# do the wave
foreach ( $image as $frame )
{
$frame->setimagebackgroundcolor("$wave_bgcolor");
$frame->waveImage($wave_amplitude, $wave_length);
}
#############
# write image xxx
$format = strtolower( $image->getimageformat() );
$path = "temp/$ID.$_SESSION[views].$format";
$image->writeimages("$path", TRUE );
# save settings & exit
$_SESSION[path] = $path;
$_SESSION[wave_amplitude] = $wave_amplitude;
$_SESSION[wave_length] = $wave_length;
$_SESSION[wave_bgcolor] = $wave_bgcolor;
header("Location: display.php?url=$path");
exit;
}
######### end wave
include("top.php");
?>
Description
Reshapes the image into a sine wave
Amplitude
Amplitude of sine wave in pixels
Wave length
Wave length of sine wave in pixels
Background color
Optional. Color of the troughs between the wave peeks. Can be a named color or hex preceded by a #. Examples: red, #ff0000. If Background color is left blank it defaults to transparent for GIF's and PNG's; black for JPEG's.