<?
error_reporting(0);
$h1 = "DJ Mike's Image Maker 2";
$h2 = "Composite";
include("functions.php");

if ( $_GET[composite_url] && $_SESSION[path] )
{ 
$image = new Imagick($_SESSION[path]);
$url = trim($_GET[composite_url] );

# reject if not start with http 
if ( !preg_match( "@^http@", "$url", $match) ) 
  { $error = "ERROR: URL's start with http"; }

# reject if can't read file 
if ( !@$blob = file_get_contents("$url") ) 
 { $error = "ERROR: Could not read $url"; }

$image_2 = new Imagick();

# one last error check 
try 
  {
    $image_2->readImageBlob("$blob");
    $width2 = $image_2->getimagewidth();
    $height2 = $image_2->getimageheight();
  }
catch ( exception $e )
 { $error = "ERROR: Could not read $url"; }

if ( $error )
 {
  $_SESSION[error] = "ERROR: Could not read $url";
  header("location;$self");
  exit;
 }

$image_2->coalesceImages();

try {
switch ( $_GET[composite] ) 
{ 
case "ADD" :
  $composite = imagick::COMPOSITE_ADD;
  break;
case "ATOP" : 
 $composite = imagick::COMPOSITE_ATOP; 
 break; 
case "BLEND" :
  $composite = imagick::COMPOSITE_BLEND;
  break;

case "BUMPMAP" : 
 $composite = imagick::COMPOSITE_BUMPMAP; 
 break; 
case "CHANGEMASK" :
  $composite = imagick::COMPOSITE_CHANGEMASK;
  break;

case "CLEAR" : 
  $composite = imagick::COMPOSITE_CLEAR; 
  break; 
case "COLORBURN" : 
  $composite = imagick::COMPOSITE_COLORBURN; 
  break; 
case "COLORDODGE" :
  $composite = imagick::COMPOSITE_COLORDODGE; 
  break; 
case "COLORIZE" :
  $composite = imagick::COMPOSITE_COLORIZE;
  break;
case "imagick::COMPOSITE_COPY" : 
 $composite = imagick::COMPOSITE_COPY; 
 break; 
case "COPYBLACK" :
  $composite = imagick::COMPOSITE_COPYBLACK;
  break;
case "COPYBLUE" :
  $composite = imagick::COMPOSITE_COPYBLUE;
  break;
case "COPYCYAN" :
  $composite = imagick::COMPOSITE_COPYCYAN;
  break;
case "COPYGREEN" :
  $composite = imagick::COMPOSITE_COPYGREEN;
  break;
case "COPYMAGENTA" :
  $composite = imagick::COMPOSITE_COPYMAGENTA;
  break;
case "COPYOPACITY" :
  $composite = imagick::COMPOSITE_COPYOPACITY;
  break;
case "COPYRED" :
  $composite = imagick::COMPOSITE_COPYRED;
  break;
case "COPYYELLOW" :
  $composite = imagick::COMPOSITE_COPYYELLOW;
  break;
case "DARKEN" : 
  $composite = imagick::COMPOSITE_DARKEN; 
  break;
case "DIFFERENCE" : 
 $composite = imagick::COMPOSITE_DIFFERENCE; 
 break; 
case "DISPLACE" : 
 $composite = imagick::COMPOSITE_DISPLACE; 
 break; 
case "DISSOLVE" :
  $composite = imagick::COMPOSITE_DISSOLVE;
  break;
case "DST" :
  $composite = imagick::COMPOSITE_DST; 
  break; 
case "DSTATOP" : 
  $composite = imagick::COMPOSITE_DSTATOP; 
  break; 
case "DSTIN" : 
  $composite = imagick::COMPOSITE_DSTIN; 
  break; 
case "DSTOUT" : 
  $composite = imagick::COMPOSITE_DSTOUT; 
  break;
case "DSTOVER" : 
  $composite = imagick::COMPOSITE_DSTOVER; 
  break;
case "DIVIDE" :
  $composite = imagick::COMPOSITE_DIVIDE;
  break;
case "EXCLUSION" : 
 $composite = imagick::COMPOSITE_EXCLUSION; 
 break; 
case "IN": 
 $composite = imagick::COMPOSITE_IN; 
 break; 
case "MINUS" : 
 $composite = imagick::COMPOSITE_MINUS; 
 break; 
case "MODULATE" : 
 $composite = imagick::COMPOSITE_MODULATE; 
 break; 
case "MULTIPLY" : 
  $composite = imagick::COMPOSITE_MULTIPLY;
  break;
case "NONE" :
  $composite = imagick::COMPOSITE_NONE;
  break; 
case "OUT" : 
 $composite = imagick::COMPOSITE_OUT; 
 break; 
case "OVER" : 
  $composite = imagick::COMPOSITE_OVER;
  break;
case "OVERLAY" :
  $composite = imagick::COMPOSITE_OVERLAY;
  break;
case "PLUS" : 
 $composite = imagick::COMPOSITE_PLUS; 
 break; 
case "HARDLIGHT" : 
 $composite = imagick::COMPOSITE_HARDLIGHT; 
 break; 
case "HUE" :
  $composite = imagick::COMPOSITE_HUE;
  break;
case "LIGHTEN" : 
  $composite = imagick::COMPOSITE_LIGHTEN; 
  break;
case "SATURATE" :
  $composite = imagick::COMPOSITE_SATURATE;
  break;
case "SCREEN" :
  $composite = imagick::COMPOSITE_SCREEN;
  break;
case "SOFTLIGHT" : 
  $composite = imagick::COMPOSITE_SOFTLIGHT;
  break;
case "SRC" : 
  $composite = imagick::COMPOSITE_SRC;
  break; 
case "SRCATOP" :
  $composite = imagick::COMPOSITE_SRCATOP;
  break;
case "SRCIN" :
  $composite = imagick::COMPOSITE_SRCIN;
  break;
case "SRCOUT" :
  $composite = imagick::COMPOSITE_SRCOUT;
  break;
case "SRCOVER" :
  $composite = imagick::COMPOSITE_SRCOVER;
  break;

case "LINEARLIGHT" :
  $composite = imagick::COMPOSITE_LINEARLIGHT;
  break;
case "LUMINIZE" :
  $composite = imagick::COMPOSITE_LUMINIZE;
  break;
case "REPLACE" :
  $composite = imagick::COMPOSITE_REPLACE;
  break;
case "SUBTRACT" :
  $composite = imagick::COMPOSITE_SUBTRACT;
  break; 
case "THRESHOLD" :
  $composite = imagick::COMPOSITE_THRESHOLD;
  break;
case "XOR" : 
 $composite = imagick::COMPOSITE_XOR; 
 break; 

default : 
 $composite = imagick::COMPOSITE_DEFAULT; 
 break; 
}
} # end try
catch ( exception $e )
 { $_SESSION[error] = $e->getmessage();
   header("location:$self");
   exit;
 }

switch ( $_GET[gravity] )
{
case "NORTHWEST" :
 $gravity = imagick::GRAVITY_NORTHWEST;
 break;
case "NORTH" :
 $gravity = imagick::GRAVITY_NORTH;
 break;
case "NORTHEAST" :
 $gravity = imagick::GRAVITY_NORTHEAST;
 break;
case "WEST" :
 $gravity = imagick::GRAVITY_WEST;
 break;
case "EAST" :
 $gravity = imagick::GRAVITY_EAST;
 break;
case "SOUTHWEST" :
 $gravity = imagick::GRAVITY_SOUTHWEST;
 break;
case "SOUTH" :
 $gravity = imagick::GRAVITY_SOUTH;
 break;
case "SOUTHEAST" :
 $gravity = imagick::GRAVITY_SOUTHEAST;
 break;
default :
 $gravity = imagick::GRAVITY_CENTER;
}

$off_x = (int)$_GET[off_x];
$off_y = (int)$_GET[off_y];

$deg = (float)$_GET[deg];
$skew_x = (float)$_GET[skew_x];
$skew_y = (float)$_GET[skew_y];

# make a draw object for settings
$draw = new imagickdraw();
# set gravity
$draw->setgravity($gravity);

$draw->rotate($deg);
$draw->skewx($skew_x);
$draw->skewy($skew_y);

if ( $_GET[autoscale] == "on" )
{
$width1 = $image->getimagewidth();
$height1 = $image->getimageheight();

$scaleX = $width1/$width2;
$scaleY = $height1/$height2;

$width2 = $width2*$scaleX;
$height2 = $height2*$scaleY;
}

$draw->composite( $composite, $off_x, $off_y, $width2, $height2, $image_2);

# apply draw to top image
$image_2->drawimage($draw);

# Composite
foreach ($image as $frame)
 { $image->drawimage($draw); }

$format = strtolower( $image->getimageformat() );
$path = "temp/$ID.$_SESSION[views].$format";

$path = "temp/$ID.$_SESSION[views].$format";

$frames = $image->getNumberImages();
if ( $frames > 1) { $image->writeImages("$path", TRUE);  }
else { $image->writeImage("$path"); }

# save
$_SESSION[path] = $path;
$_SESSION[composite_url] = $url;
$_SESSION[off_x] = $off_x;
$_SESSION[off_y] = $off_y;
$_SESSION[composite_deg] = (float)$_GET[deg];
$_SESSION[composite_skew_x] = (float)$_GET[skew_x];
$_SESSION[composite_skew_y] = (float)$_GET[skew_y];


header("location:display.php");
exit;
}
###################
include("top.php");
?>
<br><br>
<form action="<?=$self; ?>">
<div class="center" style="text-align:center">
<table border="1" style="margin:auto;">

<tr><td align="center" colspan="2">URL: 
<input type="text" name="composite_url" value="<?=$_SESSION[composite_url]; ?>">
</td></tr>
<tr>
<td align="right">
Offset:&nbsp;
X<input type="text" 
             style="width:2em"
             name="off_x"
             value="<?=$_SESSION[off_y]; ?>">
Y<input type="text"
             style="width:2em"
             name="off_y"
             value="<?=$_SESSION[off_y]; ?>">
</td><td>
<select name="gravity">
<option value="CENTER">Gravity</option>
<option value="NORTHWEST">NW</option>
<option value="NORTH">N</option>
<option value="NORTHEAST">NE</option>
<option value="WEST">W</option>
<option value="EAST">E</option>
<option value="SOUTHWEST">SW</option>
<option value="SOUTH">S</option>
<option value="SOUTHEAST">SE</option>
</select>
</td></tr>
<tr><td align="right">
Skew:&nbsp;
X<input type="text"
                       style="width:2em"
                       name="skew_x" 
                       value="<?=$_SESSION[composite_skew_x]; ?>">
Y<input type="text"
             style="width:2em"
             name="skew_y" 
             value="<?=$_SESSION[composite_skew_y]; ?>">
</td><td>
<select name="composite">
<option value="DEFAULT">Composite</option>
<option value="ADD">Add</option>
<option value="ATOP">Atop</option>
<option value="CHANGEMASK">ChangeMask</option>
<option value="BLEND">Blend</option>
<option value="BUMPMAP">Bumpmap</option>
<option value="CLEAR">Clear</option>
<option value="COLORBURN">ColorBurn</option>
<option value="COLORDODGE">ColorDodge</option>
<option value="COLORIZE">Colorize</option>
<option value="COPY">Copy</option>
<option value="COPYBLACK">CopyBlack</option>
<option value="COPYBLUE">CopyBlue</option>
<option value="COPYCYAN">CopyCyan</option>
<option value="COPYGREEN">CopyGreen</option>
<option value="COPYMAGENTA">CopyMagenta</option>
<option value="COPYOPACITY">CopyOpacity</option>
<option value="COPYRED">CopyRed</option>
<option value="COPYELLOW">CopyYellow</option>
<option value="DARKEN">Darken</option>
<option value="DIFFERENCE">Difference</option>
<option value="DISPLACE">Displace</option>
<option value="DISSOLVE">Dissolve</option>
<option value="DST">Dst</option>
<option value="DSTATOP">DstAtop</option> 
<option value="DSTIN">DstIn</option>
<option value="DSTOUT">DstOut</option>
<option value="DSTOVER">DstOver</option> 
<option value="DIVIDE">Divide</option>
<option value="EXCLUSION">Exclusion</option>
<option value="HARDLIGHT">HardLight</option>
<option value="HUE">Hue</option>
<option value="IN">In</option>
<option value="LIGHTEN">Lighten</option>
<option value="LINEARLIGHT">LinearLight</option>
<option value="LUMINIZE">Luminize</option>
<option value="MINUS">Minus</option>
<option value="MODULATE">Modulate</option>
<option value="MULTIPLY">Multiply</option>
<option value="NONE">None</option> 
<option value="OUT">Out</option>
<option value="OVER">Over</option>
<option value="OVERLAY">Overlay</option>
<option value="PLUS">Plus</option>
<option value="REPLACE">Replace</option>
<option value="SATURATE">Saturate</option>
<option value="SCREEN">Screen</option>
<option value="SOFTLIGHT">SoftLight</option> 
<option value="SRC">Src</option>
<option value="SRCATOP">SrcAtop</option>
<option value="SRCIN">SrcIn</option>
<option value="SRCOUT">SrcOut</option>
<option value="SRCOVER">SrcOver</option>
<option value="SUBTRACT">Subtract</option>
<option value="THRESHOLD">Threshold</option>
<option value="XOR">Xor</option>
</select>
</td></tr>

<tr>
<td align="right">
Rotate: <input type="text" style="width:2em" name="deg" value="<?=$_SESSION[composite_deg]; ?>">
Auto scale<input type="checkbox" name="autoscale">
</td><td>
<input type="submit" value="<?=$h2; ?>"></td></tr>
</table>
</div>
</form>
<dl>
<dt>Description</dt>
<dd>Combines pixels from a different image with your target image. You can control composition by choosing which image to combine, where the combining occurs (the offset from the target image), and how the pixels are combined (composite operation).
</dd>
<dt>URL</dt>
<dd>URL of second image</dd>
<dt>Offset</dt>
<dd>Offset from origin in pixels.</dd>
<dt>Gravity</dt>
<dd>Origin of offset. N = center top, E = middle right etc. Defaults to center.</dd>

<dt>Skew</dt>
<dd>Optional. Skew second image before compositing it. Enter skew angles in degrees.</dd>

<dt>Composite Operator</dt>
<dd>How the pixels are combined.
<dl>
<dt>Atop</dt>
<dd>The part of the source lying inside of the destination is composited onto the destination.</dd>

<dt>Bumpmap</dt>
<dd>The same as Multiply, except the source is converted to greyscale first.</dd>

<dt>Clear</dt>
<dd>Both the color and the alpha of the destination are cleared. Neither the source nor the destination are used as input.</dd> 

<dt>ColorBurn</dt>
<dd>Darkens the destination color to reflect the source color. Painting with white produces no change.</dd>
 
<dt>ColorDodge</dt>
<dd>Brightens the destination color to reflect the source color. Painting with black produces no change.</dd>

<dt>Copy</dt>
<dd>Simply place the source on top of the destination.</dd>

<dt>Darken</dt>
<dd>Selects the darker of the destination and source colors. The destination is replaced with the source when the source is darker, otherwise it is left unchanged.</dd> 

<dt>Difference</dt>
<dd>Subtracts the darker of the two constituent colors from the lighter. Painting with white inverts the destination color. Painting with black produces no change.</dd>

<dt>Displace</dt>
<dd></dd>

<dt>Dst </dt>
<dd>The destination is left untouched.</dd> 

<dt>DstAtop</dt>
<dd>The part of the destination lying inside of the source is composited over the source and replaces the destination.</dd> 

<dt>DstIn</dt>
<dd>The part of the destination lying inside of the source replaces the destination.</dd> 

<dt>DstOut</dt>
<dd>The part of the destination lying outside of the source replaces the destination.</dd> 

<dt>DstOver</dt>
<dd>The destination is composited over the source and the result replaces the destination.</dd> 

<dt>Exclusion</dt>
<dd>Produces an effect similar to that of 'difference', but appears as lower contrast. Painting with white inverts the destination color. Painting with black produces no change.</dd>  

<dt>HardLight</dt>
<dd>Multiplies or screens the colors, dependent on the source color value. If the source color is lighter than 0.5, the destination is lightened as if it were screened. If the source color is darker than 0.5, the destination is darkened, as if it were multiplied. The degree of lightening or darkening is proportional to the difference between the source color and 0.5. If it is equal to 0.5 the destination is unchanged. Painting with pure black or white produces black or white.</dd> 

<dt>In</dt>
<dd>The part of the source lying inside of the destination replaces the destination.</dd>

<dt>Lighten</dt>
<dd>Selects the lighter of the destination and source colors. The destination is replaced with the source when the source is lighter, otherwise it is left unchanged.</dd> 

<dt>Minus</dt>
<dd>The source is subtracted to the destination and replaces the destination.</dd> 

<dt>Multiply</dt>
<dd>The source is multiplied by the destination and replaces the destination. The resultant color is always at least as dark as either of the two constituent colors. Multiplying any color with black produces black. Multiplying any color with white leaves the original color unchanged.</dd>

<dt>Out</dt>
<dd>The part of the source lying outside of the destination replaces the destination.</dd>

<dt>Over</dt>
<dd>Overlay second image over the first</dd>

<dt>Overlay</dt>
<dd>Multiplies or screens the colors, dependent on the destination color. Source colors overlay the destination whilst preserving its highlights and shadows. The destination color is not replaced, but is mixed with the source color to reflect the lightness or darkness of the destination.</dd>

<dt>Plus</dt>
<dd>The source is added to the destination and replaces the destination. This operator is useful for animating a dissolve between two images. </dd>

<dt>Screen</dt>
<dd>The source and destination are complemented and then multiplied and then replace the destination. The resultant color is always at least as light as either of the two constituent colors. Screening any color with white produces white. Screening any color with black leaves the original color unchanged.</dd> 

<dt>Src</dt>
<dd>The source is copied to the destination. The destination is not used as input.</dd>

<dt>SoftLight </dt>
<dd>Darkens or lightens the colors, dependent on the source color value. If the source color is lighter than 0.5, the destination is lightened. If the source color is darker than 0.5, the destination is darkened, as if it were burned in. The degree of darkening or lightening is proportional to the difference between the source color and 0.5. If it is equal to 0.5, the destination is unchanged. Painting with pure black or white produces a distinctly darker or lighter area, but does not result in pure black or white.</dd> 

<dt>XOR</dt>
<dd>The part of the source that lies outside of the destination is combined with the part of the destination that lies outside of the source.</dd>
</dl>
</dt>
<dt>Rotate</dt>
<dd>Optional. Rotate second image before compositing it. Enter rotatation angle in degrees</dd>
<dt>Auto Scale</dt>
<dd>Scale the second image to the same size as the first before composting</dd>
</dl>

<? include("footer.php"); ?>
</body>
</html>