<?php
/**
* Native PHP ImageConvolution() for PHP4, based on PHP5.1.4 GD lib C source
* 2006-11-30; 2009-03-24
*
* (PHP 4 >= 4.3.2, PHP 5)
*
* @author ukjpriee@ukj.pri.ee ; http://ukj.pri.ee
* @param resource $src Image
* @param array $filter 3x3
* @param float $filter_div
* @param float $offset
* @return bool
*/
function ImageConvolution_(&$src, $filter, $filter_div, $offset) {
if (is_resource($src)===FALSE) return FALSE;
if( ( count($filter)+count($filter[0])+
count($filter[1])+ count($filter[2]) ) !=12 ) return FALSE;
if( function_exists('imageconvolution')===TRUE ) {
// PHP 5
return imageconvolution($src, $filter, $filter_div, $offset);
}
$srcsx = imagesx( $src ); $srcsy = imagesy( $src );
$srcsx_m1 = $srcsx - 1; $srcsy_m1 = $srcsy - 1;
/* We need the orinal image with each safe neoghb. pixel */
$srcback = imagecreatetruecolor($srcsx, $srcsy); // PHP 4.0.6
ImageCopy($srcback, $src,0,0,0,0,$srcsx,$srcsy);
if ($srcback==NULL) return 0;
set_time_limit ( 0 );
for ( $y=0; $y<$srcsy; $y++) {
for($x=0; $x<$srcsx; $x++) {
$new_r = $new_g = $new_b = 0;
/////////////////////////////////////////
$x_m1 = $x-1;
$y_m1 = $y-1;
for ($j=0; $j<3; $j++) {
$yv = min(max($y_m1 + $j, 0), $srcsy_m1);
for ($i=0; $i<3; $i++) {
$a = imagecolorsforindex($srcback,
ImageColorAt($srcback, min(max($x_m1 + $i, 0), $srcsx_m1 ),$yv ) );
$new_r += $a['red'] * $filter[$j][$i];
$new_g += $a['green'] * $filter[$j][$i];
$new_b += $a['blue'] * $filter[$j][$i];
}
}
/////////////////////////////////////////
$new_r = ($new_r/$filter_div)+$offset;
$new_g = ($new_g/$filter_div)+$offset;
$new_b = ($new_b/$filter_div)+$offset;
$new_r=$new_r&255;// if($new_r > 255)$new_r = 255;elseif($new_r < 0)$new_r = 0;
$new_g=$new_g&255;// if($new_g > 255)$new_g = 255;elseif($new_g < 0)$new_g = 0;
$new_b=$new_b&255;// if($new_b > 255)$new_b = 255;elseif($new_b < 0)$new_b = 0;
imagesetpixel ( $src, $x, $y,
imagecolorresolvealpha ( $src, $new_r, $new_g, $new_b, $a['alpha'] ) );// PHP 4.0.6
}
}
ImageDestroy($srcback);
return 1;
}
if( !defined('IMG_FILTER_NEGATE') ) define('IMG_FILTER_NEGATE', 0);
if( !defined('IMG_FILTER_GRAYSCALE') ) define('IMG_FILTER_GRAYSCALE', 1);
if( !defined('IMG_FILTER_BRIGHTNESS') ) define('IMG_FILTER_BRIGHTNESS', 2);
if( !defined('IMG_FILTER_CONTRAST') ) define('IMG_FILTER_CONTRAST', 3);
if( !defined('IMG_FILTER_COLORIZE') ) define('IMG_FILTER_COLORIZE', 4);
if( !defined('IMG_FILTER_EDGEDETECT') ) define('IMG_FILTER_EDGEDETECT', 5);
if( !defined('IMG_FILTER_EMBOSS') ) define('IMG_FILTER_EMBOSS', 6);
if( !defined('IMG_FILTER_GAUSSIAN_BLUR') ) define('IMG_FILTER_GAUSSIAN_BLUR', 7);
if( !defined('IMG_FILTER_SELECTIVE_BLUR') ) define('IMG_FILTER_SELECTIVE_BLUR', 8);
if( !defined('IMG_FILTER_MEAN_REMOVAL') ) define('IMG_FILTER_MEAN_REMOVAL', 9);
if( !defined('IMG_FILTER_SMOOTH') ) define('IMG_FILTER_SMOOTH', 10);
if( !defined('IMG_FILTER_RASTERIZE') ) define('IMG_FILTER_RASTERIZE', 21);
if( !defined('IMG_FILTER_PIXELATE') ) define('IMG_FILTER_PIXELATE', 21);
if( !defined('IMG_FILTER_TINT') ) define('IMG_FILTER_TINT', 11);
if( !defined('IMG_FILTER_RASTER_LINES') ) define('IMG_FILTER_RASTER_LINES', 12);
if( !defined('IMG_FILTER_BAYER') ) define('IMG_FILTER_BAYER', 13);
if( !defined('IMG_FILTER_CONTURES') ) define('IMG_FILTER_CONTURES', 14);
if( !defined('IMG_FILTER_JITTERING') ) define('IMG_FILTER_JITTERING', 15);
if( !defined('IMG_FILTER_POLARIZE') ) define('IMG_FILTER_POLARIZE', 16);
if( !defined('IMG_FILTER_REFRACTOR') ) define('IMG_FILTER_REFRACTOR', 17);
if( !defined('IMG_FILTER_COLOR_THRESHOLD') )define('IMG_FILTER_COLOR_THRESHOLD',18);
if( !defined('IMG_FILTER_CARTOONIZE') ) define('IMG_FILTER_CARTOONIZE', 19);
if( !defined('IMG_FILTER_THRESHOLD') ) define('IMG_FILTER_THRESHOLD', 20);
if( !defined('IMG_FILTER_OLIFY') ) define('IMG_FILTER_OLIFY' , 22);
if( !defined('IMG_FILTER_PASTEL') ) define('IMG_FILTER_PASTEL', 23);
if( !defined('IMG_FILTER_WATERCOLOR') ) define('IMG_FILTER_WATERCOLOR', 24);
if( !defined('IMG_FILTER_ROTOZOOM') ) define('IMG_FILTER_ROTOZOOM', 25);
if( !defined('IMG_FILTER_MIRRORED_FRAME') ) define('IMG_FILTER_MIRRORED_FRAME', 26);
if( !defined('IMG_FILTER_TEXTURED_FRAME') ) define('IMG_FILTER_TEXTURED_FRAME', 27);
if( !defined('IMG_FILTER_FUZZY_FRAME') ) define('IMG_FILTER_FUZZY_FRAME', 28);
/**
* Applies a filter to an image
* PHP 4.0.6 > imagecolorresolvealpha()
* PHP 4.0.6 > imagecopyresampled()
* PHP 4.2.0 > fmod()
*
*
* IMG_FILTER_NEGATE: Reverses all colors of the image.
* IMG_FILTER_GRAYSCALE: Converts the image into grayscale.
* IMG_FILTER_BRIGHTNESS: Changes the brightness of the image. Use arg1
* to set the level of brightness.
* IMG_FILTER_CONTRAST: Changes the contrast of the image. Use arg1
* to set the level of contrast.
* IMG_FILTER_COLORIZE: Like IMG_FILTER_GRAYSCALE, except you can
* specify the color. Use arg1, arg2 and arg3 in
* the form of red, blue, green. The range for
* each color is 0 to 255.
* IMG_FILTER_EDGEDETECT: Uses edge detection to highlight the edges in the image.
* IMG_FILTER_EMBOSS: Embosses the image.
* IMG_FILTER_GAUSSIAN_BLUR: Blurs the image using the Gaussian method.
* IMG_FILTER_SELECTIVE_BLUR: Blurs the image.
* IMG_FILTER_MEAN_REMOVAL: Uses mean removal to achieve a \"sketchy\" effect.
* IMG_FILTER_SMOOTH: Makes the image smoother. Use arg1 to set the
* level of smoothness.
*
* IMG_FILTER_TINT Like IMG_FILTER_COLORIZE except you can use
* (float) arg4 to set the intensive factor
* 0.0-1.0. Default is 0.25.
* IMG_FILTER_PIXELATE
* IMG_FILTER_RASTERIZE Rasterize the image. Use (int) arg1 to
* set block size in pixels, default is 127.
* IMG_FILTER_RASTER_LINES Colored raster lines. Use (int) arg1 0-255 to
* set the level of threshold. Default is 127.
* IMG_FILTER_BAYER RGB bayer pattern simulation.
* IMG_FILTER_CONTURES Black conture lines and white backround.
* (int) $arg1: amount 0-100; (int) $arg2: line
* width; (bool) $arg3: white background.
* IMG_FILTER_JITTERING Use (int) arg1 1-100 to set amount. Default is 3.
* IMG_FILTER_POLARIZE
* IMG_FILTER_REFRACTOR Use (int) arg1 to set pattern size. Default is 20.
* IMG_FILTER_COLOR_THRESHOLD Use (int) arg1 to set maximum colors. Default id 64.
* IMG_FILTER_CARTOONIZE Converst the image into cartoon like look.
* IMG_FILTER_THRESHOLD Convert the image B/W look. Use (int) arg1
* 0-255 to set threshold level. Default is 127.
* IMG_FILTER_OLIFY Olify the image. Use (int) arg1 1-20 to set
* amount. Default is 2.
* IMG_FILTER_PASTEL Convert the image drawed with pastels look.
* Use (int) arg1 1-20 to set amount. Default is 2.
* IMG_FILTER_WATERCOLOR Convert the image painted with watercolors look.
* IMG_FILTER_ROTOZOOM Rotate and zoom. Use (float) arg1 0-360 to set
* angle and (float) arg2 0.0-10.0 to set zoom,
* otherwise defaults used(45/1.6).
* IMG_FILTER_MIRRORED_FRAME Draw frame over the image. Use (int) arg1 to
* set borser width.
* IMG_FILTER_TEXTURED_FRAME Draw image-textured frame over the image.
* IMG_FILTER_FUZZY_FRAME Draw light & fuzzy image-textured frame over the image
*
* @author ukjpriee@ukj.pri.ee ; http://ukj.pri.ee
* @param resource $src_im
* @param int $filtertype
* @param mixed $arg1
* @param mixed $arg2
* @param mixed $arg3
* @param mixed $arg4
* @return bool
*/
function imagefilter_ ( &$src_im, $filtertype=0, $arg1=0, $arg2=0, $arg3=0, $arg4=0 ) {
if (!is_resource($src_im)) return 0;
$srcsx = imagesx( $src_im ); $srcsy = imagesy( $src_im );
switch( $filtertype ) {
case IMG_FILTER_NEGATE: {
if( function_exists('imagefilter')===TRUE )
// PHP 5
return imagefilter( $src_im, IMG_FILTER_NEGATE );
for ($y = 0; $y<$srcsy;$y++){
for ($x = 0; $x<$srcsx;$x++){
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$color = imagecolorresolvealpha($src_im,
255 - $a['red'],255 - $a['green'],255 - $a['blue'], $a['alpha'] );
imagesetpixel ( $src_im, $x, $y, $color );
}
}
break;
}
case IMG_FILTER_GRAYSCALE: {
if($arg1>=256 or $arg1==0) {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_GRAYSCALE );
$arg1=256;
}
if($arg1<3)$arg1=2; $m=round(256/$arg1); // astme suurus
for($y=0;$y<$srcsy;$y++) {
for($x=0;$x<$srcsx;$x++) {
$a=imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$r = round( 0.299*$a['red'] + 0.587*$a['green'] + 0.114*$a['blue'] );
if( $arg1<3 ) {
if($r>=127) $r=255; else $r=0;
} else
// fmod() 4.2.0
$r = abs( $r - fmod($r,$m) );
imagesetpixel($src_im,$x,$y,
imagecolorresolvealpha($src_im,$r,$r,$r,$a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_BRIGHTNESS: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_BRIGHTNESS,$arg1 );
for ($y = 0; $y<$srcsy;$y++){
for ($x = 0; $x<$srcsx;$x++){
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$a['red'] += $arg1;
$a['green'] += $arg1;
$a['blue'] += $arg1;
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
// PHP 4.0.6
$color = imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] );
imagesetpixel ( $src_im, $x, $y, $color );
}
}
break;
}
case IMG_FILTER_CONTRAST: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_CONTRAST,$arg1 );
$contrast =& $arg1;
$contrast = (100.0-$contrast)/100.0;
$contrast = $contrast*$contrast;
for ($y = 0; $y<$srcsy;$y++){
for ($x = 0; $x<$srcsx;$x++){
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$a['red'] = $a['red']/255.0;
$a['red'] = $a['red']-0.5;
$a['red'] = $a['red']*$contrast;
$a['red'] = $a['red']+0.5;
$a['red'] = $a['red']*255.0;
$a['green'] = $a['green']/255.0;
$a['green'] = $a['green']-0.5;
$a['green'] = $a['green']*$contrast;
$a['green'] = $a['green']+0.5;
$a['green'] = $a['green']*255.0;
$a['blue'] = $a['blue']/255.0;
$a['blue'] = $a['blue']-0.5;
$a['blue'] = $a['blue']*$contrast;
$a['blue'] = $a['blue']+0.5;
$a['blue'] = $a['blue']*255.0;
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
// PHP 4.0.6
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'],$a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_COLORIZE: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_COLORIZE, $arg1, $arg2, $arg3 );
$red = $arg1;
$green = $arg2;
$blue = $arg3;
for($y=0;$y<$srcsy;$y++) {
for($x=0;$x<$srcsx;$x++) {
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$a['red'] += $red;
$a['green'] += $green;
$a['blue'] += $blue;
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im, $a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_EDGEDETECT: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_EDGEDETECT );
$kernel = array (array( -1.0, 0.0, -1.0),
array( 0.0, 4.0, 0.0),
array( -1.0, 0.0, -1.0));
ImageConvolution_($src_im, $kernel, 1, 127);
break;
}
case IMG_FILTER_EMBOSS: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_EMBOSS );
$kernel = array (array( 1.5, 0.0, 0.0),
array( 0.0, 0.0, 0.0),
array( 0.0, 0.0,-1.5));
ImageConvolution_($src_im, $kernel, 1, 127);
break;
}
case IMG_FILTER_GAUSSIAN_BLUR: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_GAUSSIAN_BLUR );
$kernel = array (array( 1.0, 2.0, 1.0),
array( 2.0, 4.0, 2.0),
array( 1.0, 2.0, 1.0));
ImageConvolution_($src_im, $kernel, 16, 0);
break;
}
case IMG_FILTER_SELECTIVE_BLUR: {
if( function_exists('imagefilter')===TRUE )
return imagefilter( $src_im, IMG_FILTER_SELECTIVE_BLUR );
/* We need the orinal image with each safe neoghb. pixel */
$srcback = imagecreatetruecolor($srcsx, $srcsy);
if ($srcback==NULL) return 0;
ImageCopy($srcback, $src_im,0,0,0,0,$srcsx,$srcsy);
$srcsxe=$srcsx-1;
$srcsye=$srcsx-1;
$a = array('red'=>0,'green'=>0,'green'=>0,'alpha'=>0);
for ($y = 1; $y<$srcsye;$y++){
for ($x = 1; $x<$srcsxe;$x++){
$a0 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x,$y ) );
$a1 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x+1,$y ) );
$a2 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x+1,$y+1 ) );
$a3 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x ,$y+1 ) );
$a4 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x-1,$y+1 ) );
$a5 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x-1,$y ) );
$a6 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x-1,$y-1 ) );
$a7 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x ,$y-1 ) );
$a8 = imagecolorsforindex($srcback, ImageColorAt($srcback, $x+1,$y-1 ) );
$a['red'] = (
$a0['red'] + $a1['red'] + $a2['red'] + $a3['red'] + $a4['red'] +
$a5['red'] + $a6['red'] + $a7['red'] + $a8['red'] ) /9;
$a['green'] = (
$a0['green'] + $a1['green'] + $a2['green'] + $a3['green'] + $a4['green'] +
$a5['green'] + $a6['green'] + $a7['green'] + $a8['green'] ) /9;
$a['blue'] = (
$a0['blue'] + $a1['blue'] + $a2['blue'] + $a3['blue'] + $a4['blue'] +
$a5['blue'] + $a6['blue'] + $a7['blue'] + $a8['blue'] ) /9;
$a['red'] =$a['red'] &255;
$a['green']=$a['green']&255;
$a['blue'] =$a['blue'] &255;
$color = imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a0['alpha'] );
imagesetpixel ( $src_im, $x, $y, $color );
}
}
break;
}
case IMG_FILTER_MEAN_REMOVAL: {
if( function_exists('imagefilter')===TRUE ) {
return imagefilter( $src_im, IMG_FILTER_MEAN_REMOVAL );
}
$kernel = array (array( -1.0, -1.0, -1.0),
array( -1.0, 9.0, -1.0),
array( -1.0, -1.0, -1.0));
ImageConvolution_($src_im, $kernel, 1, 0);
break;
}
case IMG_FILTER_SMOOTH: {
if( function_exists('imagefilter') ) {
return imagefilter( $src_im, IMG_FILTER_SMOOTH,$arg1 );
}
$weight = $arg1;
$kernel = array
(array(1.0,1.0 ,1.0),
array(1.0,$weight,1.0),
array(1.0,1.0 ,1.0));
ImageConvolution_($src_im, $kernel, $weight+8, 0);
break;
}
case IMG_FILTER_TINT: {
if($arg4==0) return TRUE;
$red = $arg1;
$green = $arg2;
$blue = $arg3;
$intens = $arg4; if($intens==0)$intens = 0.25;
if($intens<0.0)$intens=0.0;elseif($intens>1.0)$intens=1.0;
for($y=0;$y<$srcsy;$y++) {
for($x=0;$x<$srcsx;$x++) {
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$dif_r = abs($a['red'] -$red);
$dif_g = abs($a['green']-$green);
$dif_b = abs($a['blue'] -$blue);
if($a['red'] <$red) $a['red'] += ($dif_r*$intens);
elseif($a['red'] >$red) $a['red'] -= ($dif_r*$intens);
if($a['green']<$green) $a['green'] += ($dif_g*$intens);
elseif($a['green']>$green) $a['green'] -= ($dif_g*$intens);
if($a['blue'] <$blue) $a['blue'] += ($dif_b*$intens);
elseif($a['blue'] >$blue) $a['blue'] -= ($dif_b*$intens);
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im, $a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_RASTER_LINES: {
$Threshold =& $arg1;
if($Threshold==0)$Threshold=127;
$black = imagecolorallocate( $src_im, 0, 0, 0 );
$white = imagecolorallocate( $src_im , 255, 255, 255 );
$tmp_sw=$black;
for ($y=0; $y<$srcsy;$y+=2) {
if($tmp_sw==$black) {
$tmp_sw=$white;
imageline( $src_im , 0, $y , $srcsx ,$y , $tmp_sw );
}
elseif($tmp_sw==$white) $tmp_sw=$black;
for ($x=0; $x<$srcsx;$x++) {
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$i = round( 0.299*$a['red'] + 0.587*$a['green'] + 0.114*$a['blue'] );
if ( $i >= $Threshold ) $c=$white; elseif ( $i < $Threshold ) $c=$black;
imagesetpixel ( $src_im, $x, $y, $c );
}
}
break;
}
case IMG_FILTER_BAYER: {
for( $y=0; $y<$srcsy;$y++ ) {
for( $x=0; $x<$srcsx;$x++ ) {
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
if (fmod($y,2)==0)
if (fmod($x,2)==0) $a['red'] = $a['blue']=0;
else $a['green'] = $a['blue']=0;
else
if (fmod($x,2)==0) $a['red'] = $a['green']=0;
else $a['red'] = $a['blue'] =0;
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha ( $src_im, $a['red'], $a['green'], $a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_JITTERING: {
$amount = $arg1;
if($amount==0)$amount = 3;
elseif($amount>100)$amount=100;
for ($y = 0; $y<$srcsy; ++$y) {
for ($x = 0; $x<$srcsx;++$x) {
$nx=$x+(rand(0,$amount))*$amount;
$ny=$y+(rand(0,$amount))*$amount;
if($nx>=$srcsx)$nx=$x-rand(3,6);
if($ny>=$srcsy)$ny=$y-rand(3,6);
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $nx,$ny ) );
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_POLARIZE: {
$Ye0 = $srcsy - 2;
$Ye1 = $srcsy - 3;
$Ye2 = $srcsy - 1;
for ($y = 5; $y<$srcsy; $y += 4) {
for ($x = 0; $x<$srcsx;++$x) {
if($y<$Ye0) {
$a = imagecolorsforindex($src_im,
ImageColorAt($src_im, $x-2,$y+2 ) );
$a['red'] -=30;
$a['green'] -=30;
$a['blue'] +=60;
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
imagesetpixel ( $src_im, $x+2, $y-2,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
if($y<$Ye1) {
$a = imagecolorsforindex($src_im,
ImageColorAt($src_im, $x+1,$y+3 ) );
$a['red'] -=30;
$a['green'] +=60;
$a['blue'] -=30;
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
imagesetpixel ( $src_im, $x, $y-2,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
if($y<$Ye2) {
$a = imagecolorsforindex($src_im,
ImageColorAt($src_im, $x+2,$y+1 ) );
$a['red'] +=60;
$a['green'] -=30;
$a['blue'] -=30;
if($a['red'] <0)$a['red'] =0; elseif($a['red'] >255)$a['red'] =255;
if($a['green']<0)$a['green']=0; elseif($a['green']>255)$a['green']=255;
if($a['blue'] <0)$a['blue'] =0; elseif($a['blue'] >255)$a['blue'] =255;
imagesetpixel ( $src_im, $x-2, $y-1,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
}
break;
}
case IMG_FILTER_REFRACTOR: {
$patternsize = $arg1;
if($patternsize==0)$patternsize=20;
elseif($patternize>$srcsx*2 or $patternize>$srcsy*2)$patternize = (($srcsx+$srcsy)/2)*2;
$M = hypot($srcsx,$srcsy) / 2;
for ($y = 0; $y<$srcsy;$y++ ) {
for ($x = 0; $x<$srcsx;$x++) {
$d1 = $x + fmod($x,($patternsize/255)*$M/2);
$d2 = $y + fmod($y,($patternsize/255)*$M/2);
if ($d1 >= $srcsx-1) $d1 = $srcsx-1;
if ($d2 >= $srcsy-1) $d2 = $srcsy-1;
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $d1,$d2 ) );
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_COLOR_THRESHOLD: {
$level = ceil(sqrt($arg1));
if($level==0)$level=12; if($level<3)$level=2; elseif($level>64)$level=64;
////////////
if($srcsx>$srcsy) { $pw=$level; $ph=ceil(($srcsy*$pw)/$srcsx);
} else { $ph=$level; $pw=ceil(($srcsx*$ph)/$srcsy); }
$tmpim = @imagecreatetruecolor($pw, $ph);
@imagecopyresampled($tmpim,$src_im, 0,0,0,0, $pw, $ph,$srcsx, $srcsy );
$impc = array(); // indexes, truecolors
$impidxa = array('r'=>array(),'g'=>array(),'b'=>array(),'a'=>array()); // index color presentations
for ($y = 0; $y<$ph;$y++) {
for ($x = 0; $x<$pw;$x++) {
$impidx = imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x,$y ) );
if( !in_array($impidx['red'],$impidxa['r']) ) $impidxa['r'][] = $impidx['red'];
if( !in_array($impidx['green'],$impidxa['g']) ) $impidxa['g'][] = $impidx['green'];
if( !in_array($impidx['blue'],$impidxa['b']) ) $impidxa['b'][] = $impidx['blue'];
if( !in_array($impidx['alpha'],$impidxa['a']) ) $impidxa['a'][] = $impidx['alpha'];
}
}
imagedestroy( $tmpim );
asort($impidxa['r'], SORT_NUMERIC ); asort($impidxa['g'], SORT_NUMERIC );
asort($impidxa['b'], SORT_NUMERIC ); asort($impidxa['a'], SORT_NUMERIC );
//print_r( $impidxa );
$chs = round( 256/pow(2, log($level,2)/3.125 ) );
for ($y = 0; $y<$srcsy;$y++) {
for ($x = 0; $x<$srcsx;$x++) {
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
foreach($impidxa['b'] as $impidxa_cb){
if( abs($impidxa_cb-$a['blue']) > abs(next($impidxa['b'])-$a['blue']) ) ;
else { $a['blue']=$impidxa_cb; break; }
}
foreach($impidxa['g'] as $impidxa_cg){
if( abs($impidxa_cg-$a['green']) > abs(next($impidxa['g'])-$a['green']) ) ;
else { $a['green']=$impidxa_cg; break; }
}
foreach($impidxa['r'] as $impidxa_cr){
if( abs($impidxa_cr-$a['red']) > abs(next($impidxa['r'])-$a['red']) ) ;
else { $a['red']=$impidxa_cr; break; }
}
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_CONTURES: {
$amount = $arg1;
if($amount<2)$amount=1; if($amount>100)$amount=100;
$amount = abs(100-$amount);
$a=$arg2; // line width
if($a<2)$a=1; elseif($a>10)$a=10;
$We = $srcsx -$a;
$He = $srcsy -$a;
$ax = $ay = $a;
$black = imagecolorresolvealpha( $src_im, 0, 0, 0 ,0);
$tmpim = @imagecreatetruecolor($srcsx,$srcsy);
@imagecopy($tmpim,$src_im, 0,0,0,0,$srcsx,$srcsy); // oiget pidine
$bw = (bool) $arg3; //white background
if($bw) {
$src_im = @imagecreatetruecolor($srcsx,$srcsy);
$white = imagecolorresolve( $src_im, 255, 255, 255 );
imagefill($src_im, 0,0,$white);
}
for ($y = 0; $y<$srcsy;$y++){
$ax = $a;
for ($x = 0; $x<$srcsx;$x++){
$rgb0 = array_sum( imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x,$y ) ) );
if($y<$He) {
$rgb2 = array_sum( imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x,$y+$ay ) ) );
}else {
$ay=0;
$rgb2 = array_sum( imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x,$y-$ay ) ) );
}
if($x<$We) {
$rgb1 = array_sum( imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x+$ax,$y ) ) );
} else {
$ax=0;
$rgb1 = array_sum( imagecolorsforindex($tmpim, ImageColorAt($tmpim,$x-$ax,$y ) ) );
}
$rgb3 = array_sum( imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x+$ax,$y+$ay ) ) );
// BLACK LINE
if( abs( $rgb0 - ($rgb1+$rgb2+$rgb3)/3 ) > $amount ) imagesetpixel($src_im,$x,$y,$black);
}
}
break;
}
case IMG_FILTER_CARTOONIZE: {
imagefilter_( $src_im, IMG_FILTER_COLOR_THRESHOLD, 24 );
$level=96; //color threshold
$chs = round( 256/pow(2, log($level,2)/3.125 ) );
$amount=20; //color sensitivity
$amount = abs(100-$amount);
$a=4; // line width
$ad=3;
$We = $srcsx -5;
$He = $srcsy -5;
$WeHe = 0;
$black = imagecolorresolvealpha( $src_im, 0, 0, 0 ,0);
set_time_limit ( 0 );
for ($y = 0; $y<$srcsy;$y++){
for ($x = 0; $x<$srcsx;$x++){
$rgb = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$rgb0 = array_sum( $rgb );
if($x<$We) {
$rgb1 = array_sum( imagecolorsforindex($src_im, ImageColorAt($src_im, $x+$a,$y ) ) ); $WeHe=0;
}
else { $rgb1 = $rgb0; $WeHe=1; }
if($y<$He)
$rgb2 = array_sum( imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y+$a ) ) );
else { $rgb2 = $rgb0; $WeHe=1; }
if( $WeHe == 0 )
$rgb3 = array_sum( imagecolorsforindex($src_im, ImageColorAt($src_im, $x+$ad,$y+$ad ) ) );
else $rgb3 = $rgb0;
// BLACK LINE
if( abs( $rgb0 - ($rgb1+$rgb2+$rgb3)/3 ) > $amount ) imagesetpixel($src_im,$x,$y,$black);
}
}
break;
}
case IMG_FILTER_THRESHOLD: {
$Threshold = $arg1;
if($Threshold==0)$Threshold=127;
for ($y=0; $y<$srcsy;$y+=1) {
for ($x=0; $x<$srcsx;$x++) {
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $x,$y ) );
$r = round( 0.299*$a['red'] + 0.587*$a['green'] + 0.114*$a['blue'] );
//if($r > 1) $r--;else $r=0;
if ( $r >= $Threshold ) $v=255; else $v=0;
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im, $v,$v,$v, $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_PIXELATE:
case IMG_FILTER_RASTERIZE: {
$cell =(int) $arg1;
if($cell<4)$cell=4;
if( $arg2 ) $arg2 = TRUE; else $arg2 = FALSE;
if( function_exists('imagefilter') ) {
return imagefilter( $src_im, IMG_FILTER_PIXELATE, $cell, $arg2 );
}
elseif($cell>=$srcsx && $cell>=$srcsy) {
$tmpim = @imagecreatetruecolor(1,1);
imagecopyresampled($tmpim,$src_im, 0,0,0,0, 1,1, $srcsx,$srcsy);
imagefilledrectangle ($src_im,0,0,$srcsx,$srcsy,ImageColorAt($tmpim,0,0));
imagedestroy( $tmpim );
break;
}
$p1w = ceil( $srcsx / $cell );
$p1h = ceil( $srcsy / $cell );
$tmpim = @imagecreatetruecolor($p1w, $p1h);
imagecopyresampled($tmpim,$src_im, 0, 0, 0, 0, $p1w, $p1h, $srcsx, $srcsy);
imagecopyresized($src_im,$tmpim, 0, 0, 0, 0, $srcsx, $srcsy,$p1w, $p1h);
imagedestroy( $tmpim );
break;
}
case IMG_FILTER_OLIFY: {
$amount = $arg1;
if($amount<1)$amount = 2; elseif($amount>20)$amount = 20;
for ($y = 0; $y<$srcsy; ++$y) {
for ($x = 0; $x<$srcsx;++$x) {
$nx=$x-(rand(0,$amount))*$amount;
$ny=$y-(rand(0,$amount))*$amount;
if($nx>$x)$nx=$x-1; if($nx<3)$nx=$x+rand(-2,2);
if($ny>$y)$ny=$y-1; if($ny<3)$ny=$y+rand(-2,2);
if(($ny-$y)>5)$ny=$y+5;
if(($nx-$x)>5)$nx=$x+5;
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $nx,$ny ) );
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_PASTEL: {
$amount = $arg1;
if($amount<1)$amount = 2; elseif($amount>10)$amount = 10;
$amount /= 2;
for ($y = 0; $y<$srcsy; ++$y) {
for ($x = 0; $x<$srcsx;++$x) {
$nx=$x-(rand(0-$amount,$amount));
$ny=$y-(rand(0-$amount,$amount));
if($nx>$x)$nx=$x+rand(0-$amount,$amount);
if($ny>$y)$ny=$y+rand(0-$amount-5,$amount);
if(($ny-$y)>5)$ny=$y+5;
if(($nx-$x)>5)$nx=$x+5;
$a = imagecolorsforindex($src_im, ImageColorAt($src_im, $nx,$ny ) );
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_WATERCOLOR: {
$tmpim = @imagecreatetruecolor($srcsx, $srcsy);
$p1w = ( 90 * $srcsx ) /100;
$p1h = ( 90 * $srcsy ) /100;
@imagecopy($tmpim,$src_im, 0,0,0,0, $p1w, $p1h);
imagefilter_( $src_im, IMG_FILTER_COLOR_THRESHOLD, 28 );
set_time_limit ( 0 );
imagefilter_( $src_im, IMG_FILTER_OLIFY, 1 );
imagecopyresampled($tmpim,$src_im, 0, 0, 0, 0, $p1w, $p1h, $srcsx,$srcsy);
imagecopyresampled($src_im,$tmpim, 0, 0, 0, 0,$srcsx,$srcsy,$p1w, $p1h);
imagedestroy( $tmpim );
break;
}
case IMG_FILTER_ROTOZOOM: {
// rotozoom by Vincent 'MooZ' Cruz (vcruz@free.fr) (Artweaver, Lua scripting)
$angle=$arg1;
if($angle<=0 or $angle>=360)$angle=0;
$angle=deg2rad($angle);
$zoom=$arg2; $zoom = $zoom<1.0?1.0: $zoom>10.0?10.0: $zoom;
$rx=cos($angle)*$zoom;
$ry=sin($angle)*$zoom;
$u0=0; $v0=0; $u1=0; $v1=0;
$tmpim = @imagecreatetruecolor($srcsx,$srcsy);
@imagecopy($tmpim,$src_im, 0,0,0,0,$srcsx,$srcsy);
for ($y=0; $y<$srcsy;$y++) {
$u1=$u0; $v1=$v0;
for ( $x=0; $x<$srcsx;$x++ ) {
$u1=$u1+$rx;
$v1=$v1+$ry;
if($u1<0)
$u=$srcsx-fmod(abs($u1),$srcsx);
else
$u=fmod($u1,$srcsx);
if($v1<0)
$v=$srcsy-fmod(abs($v1),$srcsx);
else
$v=fmod($v1,$srcsy);
$a = imagecolorsforindex($tmpim, ImageColorAt($tmpim, $u,$v ) );
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
$u0=$u0-$ry; $v0=$v0+$rx;
}
break;
}
case IMG_FILTER_MIRRORED_FRAME: {
//mirrored_frame.lua
$FrameSize = $arg1;
if($FrameSize==0)$FrameSize=30;
if($FrameSize > $srcsx/2 ) $FrameSize = $srcsx/2;
if($FrameSize > $srcsy/2 ) $FrameSize = $srcsy/2;
$tmpim = @imagecreatetruecolor($srcsx,$srcsy);
@imagecopy($tmpim,$src_im, 0,0,0,0,$srcsx,$srcsy); // oiget pidine
if( function_exists( 'imagerotate' )) {
$src_im = imagerotate ( $src_im, 180,0 );
return @imagecopyresampled($src_im,$tmpim, $FrameSize,$FrameSize,0,0,
$srcsx-($FrameSize*2),$srcsy-($FrameSize*2),$srcsx,$srcsy);
}
for ($y=0; $y<$srcsy;$y++) {
for ($x=0; $x<$srcsx;$x++) {
$insideframe=0;
if( ($x > $FrameSize) and ($x < $srcsx-$FrameSize-1) )
if( ($y > $FrameSize) and ($y < $srcsy-$FrameSize-1) )$insideframe=1;
if($insideframe==1)
$a = imagecolorsforindex($tmpim, ImageColorAt($tmpim, $x,$y ) );
else
$a = imagecolorsforindex($tmpim, ImageColorAt($tmpim, $srcsx-$x,$srcsy-$y ) );
imagesetpixel ( $src_im, $x, $y,
imagecolorresolvealpha($src_im,
$a['red'],$a['green'],$a['blue'], $a['alpha'] ) );
}
}
break;
}
case IMG_FILTER_TEXTURED_FRAME: {
if( $srcsx <= 16 or $srcsy <= 16) return $FrameSize = 4;
elseif( $srcsx >= $srcsy ) $FrameSize = ceil($srcsx/10);
else $FrameSize = ceil($srcsy/10);
// copy for
$tmpim = @imagecreatetruecolor($srcsx,$srcsy);
@imagecopy($tmpim,$src_im, 0,0,0,0,$srcsx,$srcsy);
// now original is dark
imagefilter_( $src_im, IMG_FILTER_BRIGHTNESS, -127 );
$black = imagecolorresolvealpha( $src_im, 0, 0, 0 ,0);
for ($i=0; $i < $FrameSize; $i += 2) {
imagerectangle($src_im, $i, $i, $srcsx-$i, $srcsy-$i, $black);
}
@imagecopy($src_im, $tmpim, $FrameSize,$FrameSize,$FrameSize,$FrameSize,$srcsx-($FrameSize*2),$srcsy-($FrameSize*2));
break;
}
case IMG_FILTER_FUZZY_FRAME: {
if( $srcsx <= 16 or $srcsy <= 16) return $FrameSize = 4;
elseif( $srcsx >= $srcsy ) $FrameSize = ceil($srcsx/10);
else $FrameSize = ceil($srcsy/10);
// copy for
$tmpim = @imagecreatetruecolor($srcsx,$srcsy);
@imagecopy($tmpim,$src_im, 0,0,0,0,$srcsx,$srcsy);
// now original is fuzzy
imagefilter_( $src_im, IMG_FILTER_SELECTIVE_BLUR );
imagefilter_( $src_im, IMG_FILTER_GAUSSIAN_BLUR );
imagefilter_( $src_im, IMG_FILTER_BRIGHTNESS, 40 );
if( function_exists('imagecolorallocatealpha'))
{ $darkalpha64 = imagecolorallocatealpha($src_im,180, 180, 180, 90 ); }
else { $darkalpha64 = imagecolorallocatealpha($src_im,180, 180, 180 ); }
@imagecopy($src_im, $tmpim, $FrameSize,$FrameSize,$FrameSize,$FrameSize,$srcsx-($FrameSize*2)+1,$srcsy-($FrameSize*2)+1);
imagerectangle($src_im, $FrameSize-1,$FrameSize-1, $srcsx-$FrameSize+1,$srcsy-$FrameSize+1, $darkalpha64);
break;
}
} //end switch
if( isset( $tmpim ) ) imagedestroy($tmpim);
return TRUE;
}
?>
|
Stumble It!
Bookmark in del.icio.us
Download
