mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-11-11 09:49:05 +00:00
224 lines
No EOL
7.4 KiB
PHP
224 lines
No EOL
7.4 KiB
PHP
<?php
|
|
//=======================================================================
|
|
// File: JPGRAPH_IMGTRANS.PHP
|
|
// Description: Extension for JpGraph to do some simple img transformations
|
|
// Created: 2003-09-06
|
|
// Author: Johan Persson (johanp@aditus.nu)
|
|
// Ver: $Id: jpgraph_imgtrans.php,v 1.1 2006/07/07 13:37:14 powles Exp $
|
|
//
|
|
// Copyright (c) Aditus Consulting. All rights reserved.
|
|
//========================================================================
|
|
|
|
//------------------------------------------------------------------------
|
|
// Class ImgTrans
|
|
// Perform some simple image transformations.
|
|
//------------------------------------------------------------------------
|
|
class ImgTrans {
|
|
var $gdImg=null;
|
|
|
|
function ImgTrans($aGdImg) {
|
|
// Constructor
|
|
$this->gdImg = $aGdImg;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
// _TransVert3D() and _TransHor3D() are helper methods to
|
|
// Skew3D().
|
|
// --------------------------------------------------------------------
|
|
function _TransVert3D($aGdImg,$aHorizon=100,$aSkewDist=120,$aDir=SKEW3D_DOWN,$aMinSize=true,$aFillColor='#FFFFFF',$aQuality=false,$aBorder=false,$aHorizonPos=0.5) {
|
|
|
|
|
|
// Parameter check
|
|
if( $aHorizonPos < 0 || $aHorizonPos > 1.0 ) {
|
|
JpGraphError::RaiseL(9001);
|
|
//("Value for image transformation out of bounds.\nVanishing point on horizon must be specified as a value between 0 and 1.");
|
|
}
|
|
|
|
$w = imagesx($aGdImg);
|
|
$h = imagesy($aGdImg);
|
|
|
|
// Create new image
|
|
$ww = $w;
|
|
if( $aMinSize )
|
|
$hh = ceil($h * $aHorizon / ($aSkewDist+$h));
|
|
else
|
|
$hh = $h;
|
|
|
|
$newgdh = imagecreatetruecolor($ww,$hh);
|
|
$crgb = new RGB( $newgdh );
|
|
$fillColor = $crgb->Allocate($aFillColor);
|
|
imagefilledrectangle($newgdh,0,0,$ww-1,$hh-1,$fillColor);
|
|
|
|
if( $aBorder ) {
|
|
$colidx = $crgb->Allocate($aBorder);
|
|
imagerectangle($newgdh,0,0,$ww-1,$hh-1,$colidx);
|
|
}
|
|
|
|
$mid = round($w * $aHorizonPos);
|
|
|
|
$last=$h;
|
|
for($y=0; $y < $h; ++$y) {
|
|
|
|
$yp = $h-$y-1;
|
|
$yt = floor($yp * $aHorizon / ($aSkewDist + $yp));
|
|
|
|
if( !$aQuality ) {
|
|
if( $last <= $yt ) continue ;
|
|
$last = $yt;
|
|
}
|
|
|
|
for($x=0; $x < $w; ++$x) {
|
|
$xt = ($x-$mid) * $aSkewDist / ($aSkewDist + $yp);
|
|
if( $aDir == SKEW3D_UP )
|
|
$rgb = imagecolorat($aGdImg,$x,$h-$y-1);
|
|
else
|
|
$rgb = imagecolorat($aGdImg,$x,$y);
|
|
$r = ($rgb >> 16) & 0xFF;
|
|
$g = ($rgb >> 8) & 0xFF;
|
|
$b = $rgb & 0xFF;
|
|
$colidx = imagecolorallocate($newgdh,$r,$g,$b);
|
|
$xt = round($xt+$mid);
|
|
if( $aDir == SKEW3D_UP ) {
|
|
$syt = $yt;
|
|
}
|
|
else {
|
|
$syt = $hh-$yt-1;
|
|
}
|
|
|
|
if( !empty($set[$yt]) ) {
|
|
$nrgb = imagecolorat($newgdh,$xt,$syt);
|
|
$nr = ($nrgb >> 16) & 0xFF;
|
|
$ng = ($nrgb >> 8) & 0xFF;
|
|
$nb = $nrgb & 0xFF;
|
|
$colidx = imagecolorallocate($newgdh,floor(($r+$nr)/2),
|
|
floor(($g+$ng)/2),floor(($b+$nb)/2));
|
|
}
|
|
|
|
imagesetpixel($newgdh,$xt,$syt,$colidx);
|
|
}
|
|
|
|
$set[$yt] = true;
|
|
}
|
|
|
|
return $newgdh;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
// _TransVert3D() and _TransHor3D() are helper methods to
|
|
// Skew3D().
|
|
// --------------------------------------------------------------------
|
|
function _TransHor3D($aGdImg,$aHorizon=100,$aSkewDist=120,$aDir=SKEW3D_LEFT,$aMinSize=true,$aFillColor='#FFFFFF',$aQuality=false,$aBorder=false,$aHorizonPos=0.5) {
|
|
|
|
$w = imagesx($aGdImg);
|
|
$h = imagesy($aGdImg);
|
|
|
|
// Create new image
|
|
$hh = $h;
|
|
if( $aMinSize )
|
|
$ww = ceil($w * $aHorizon / ($aSkewDist+$w));
|
|
else
|
|
$ww = $w;
|
|
|
|
$newgdh = imagecreatetruecolor($ww,$hh);
|
|
$crgb = new RGB( $newgdh );
|
|
$fillColor = $crgb->Allocate($aFillColor);
|
|
imagefilledrectangle($newgdh,0,0,$ww-1,$hh-1,$fillColor);
|
|
|
|
if( $aBorder ) {
|
|
$colidx = $crgb->Allocate($aBorder);
|
|
imagerectangle($newgdh,0,0,$ww-1,$hh-1,$colidx);
|
|
}
|
|
|
|
$mid = round($h * $aHorizonPos);
|
|
|
|
$last = -1;
|
|
for($x=0; $x < $w-1; ++$x) {
|
|
$xt = floor($x * $aHorizon / ($aSkewDist + $x));
|
|
if( !$aQuality ) {
|
|
if( $last >= $xt ) continue ;
|
|
$last = $xt;
|
|
}
|
|
|
|
for($y=0; $y < $h; ++$y) {
|
|
$yp = $h-$y-1;
|
|
$yt = ($yp-$mid) * $aSkewDist / ($aSkewDist + $x);
|
|
|
|
if( $aDir == SKEW3D_RIGHT )
|
|
$rgb = imagecolorat($aGdImg,$w-$x-1,$y);
|
|
else
|
|
$rgb = imagecolorat($aGdImg,$x,$y);
|
|
$r = ($rgb >> 16) & 0xFF;
|
|
$g = ($rgb >> 8) & 0xFF;
|
|
$b = $rgb & 0xFF;
|
|
$colidx = imagecolorallocate($newgdh,$r,$g,$b);
|
|
$yt = floor($hh-$yt-$mid-1);
|
|
if( $aDir == SKEW3D_RIGHT ) {
|
|
$sxt = $ww-$xt-1;
|
|
}
|
|
else
|
|
$sxt = $xt ;
|
|
|
|
if( !empty($set[$xt]) ) {
|
|
$nrgb = imagecolorat($newgdh,$sxt,$yt);
|
|
$nr = ($nrgb >> 16) & 0xFF;
|
|
$ng = ($nrgb >> 8) & 0xFF;
|
|
$nb = $nrgb & 0xFF;
|
|
$colidx = imagecolorallocate($newgdh,floor(($r+$nr)/2),
|
|
floor(($g+$ng)/2),floor(($b+$nb)/2));
|
|
}
|
|
imagesetpixel($newgdh,$sxt,$yt,$colidx);
|
|
}
|
|
|
|
$set[$xt] = true;
|
|
}
|
|
|
|
return $newgdh;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
// Skew image for the apperance of a 3D effect
|
|
// This transforms an image into a 3D-skewed version
|
|
// of the image. The transformation is specified by giving the height
|
|
// of the artificial horizon and specifying a "skew" factor which
|
|
// is the distance on the horizon line between the point of
|
|
// convergence and perspective line.
|
|
//
|
|
// The function returns the GD handle of the transformed image
|
|
// leaving the original image untouched.
|
|
//
|
|
// Parameters:
|
|
// * $aGdImg, GD handle to the image to be transformed
|
|
// * $aHorizon, Distance to the horizon
|
|
// * $aSkewDist, Distance from the horizon point of convergence
|
|
// on the horizon line to the perspective points. A larger
|
|
// value will fore-shorten the image more
|
|
// * $aDir, parameter specifies type of convergence. This of this
|
|
// as the walls in a room you are looking at. This specifies if the
|
|
// image should be applied on the left,right,top or bottom walls.
|
|
// * $aMinSize, true=make the new image just as big as needed,
|
|
// false = keep the image the same size as the original image
|
|
// * $aFillColor, Background fill color in the image
|
|
// * $aHiQuality, true=performa some interpolation that improves
|
|
// the image quality but at the expense of performace. Enabling
|
|
// high quality will have a dramatic effect on the time it takes
|
|
// to transform an image.
|
|
// * $aBorder, if set to anything besides false this will draw a
|
|
// a border of the speciied color around the image
|
|
// --------------------------------------------------------------------
|
|
function Skew3D($aHorizon=120,$aSkewDist=150,$aDir=SKEW3D_DOWN,$aHiQuality=false,$aMinSize=true,$aFillColor='#FFFFFF',$aBorder=false) {
|
|
return $this->_Skew3D($this->gdImg,$aHorizon,$aSkewDist,$aDir,$aHiQuality,
|
|
$aMinSize,$aFillColor,$aBorder);
|
|
}
|
|
|
|
function _Skew3D($aGdImg,$aHorizon=120,$aSkewDist=150,$aDir=SKEW3D_DOWN,$aHiQuality=false,$aMinSize=true,$aFillColor='#FFFFFF',$aBorder=false) {
|
|
if( $aDir == SKEW3D_DOWN || $aDir == SKEW3D_UP )
|
|
return $this->_TransVert3D($aGdImg,$aHorizon,$aSkewDist,$aDir,$aMinSize,$aFillColor,$aHiQuality,$aBorder);
|
|
else
|
|
return $this->_TransHor3D($aGdImg,$aHorizon,$aSkewDist,$aDir,$aMinSize,$aFillColor,$aHiQuality,$aBorder);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
?>
|