Shikiryu/svgToImage
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Code Issues 1 Releases Wiki Activity

Optimisation du code Path |

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Prise en compte d'un nouveau format Path |
Changement du _parseInt afin de prendre en compte les int négatifs
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Chouchen 2010-11-30 12:17:40 +00:00
parent 94669b470f
commit eb47804f61
1 changed files with 96 additions and 80 deletions
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176
trunk/svgtoimage.php
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@ -22,6 +22,18 @@ class SVGTOIMAGE{
private $transparentColor = array(0,0,255);
public $_debug = true; // change to false to stop debug mode
/*
* array of path type
*/
private $pathType = array(
'm' => 'MoveTo',
'l' => 'LineTo',
'h' => 'HorizontalLineTo',
'v' => 'VerticalLineTo',
'c' => 'CurveTo',
'z' => 'EndingLine',
);
/* array of color names => hex color
because some svg creator uses them
*/
@ -53,7 +65,7 @@ class SVGTOIMAGE{
*/
public function __construct($svg){
if($this->_debug) $this->_log = new Log('log.dat');
if($this->_debug) $this->_log->message('Ouverture du fichier contentant : '.$svg);
//if($this->_debug) $this->_log->message('Ouverture du fichier contentant : '.$svg);
$this->_svgXML = simplexml_load_string($svg);
}
@ -318,8 +330,10 @@ class SVGTOIMAGE{
* @return int
*/
private function _parseInt($string){
if(preg_match('/(\d+)/', $string, $array)) {
return $array[1];
if(preg_match('/[-]?(\d+)/', $string, $array)) {
//if(preg_match('/[-]?(\d+)/', $string, $array)) {
return $array[0];
//return $array[1];
} else {
return 0;
}
@ -339,6 +353,30 @@ class SVGTOIMAGE{
}
}
/*
* add a curve to the final image
* @param $startX, $startY, $control1X, $control1Y, $control2X, $control2Y, $endX, $endY int position of start, controls and end points
* @param imagecolorallocate color (via _allocatecolor !)
* @return lots of imagesetpixel
* Algorithme de http://www.dreamstube.com/post/Bezier-Curves-In-PHP!.aspx
*/
private function _drawCurve($startX, $startY, $control1X, $control1Y, $control2X, $control2Y, $endX, $endY, $color){
$cx=3*($control1X-$startX);
$bx=3*($control2X-$control1X)-$cx;
$ax=$endX-$startX-$cx-$bx;
$cy=3*($control1Y-$startY);
$by=3*($control2Y-$control1Y)-$cy;
$ay=$endY-$startY-$cy-$by;
if($this->_debug) $this->_log->message('ax : '.$ax.', ay : '.$ay);
for($t=0; $t<1; $t+=.01)
{
$xt = $ax * $t * $t * $t + $bx * $t * $t + $cx * $t + $startX;
$yt = $ay * $t * $t * $t + $by * $t * $t + $cy * $t + $startY;
imagesetpixel ( $this->_image , $xt , $yt , $color );
}
}
/*
* add path/lineS/polyline whatever you name it.
* @param simpleXMLElement
@ -362,7 +400,7 @@ class SVGTOIMAGE{
case 'style' : if(strripos($value, 'display: none') || strripos($value, 'display:none')) return; break;
}
}
if(substr($path, 0,1) != 'M' && !is_numeric(substr($path, 0,1))){
if(strtolower(substr($path, 0,1)) != 'm' && !is_numeric(substr($path, 0,1))){
if($this->_debug) $this->_log->error('Mauvais path rencontré : '.$path);
return;
}
@ -380,7 +418,31 @@ class SVGTOIMAGE{
$lastOpe = '';
$pathArray = split('[ ,]', $path); //explode(' ', $path);
$pathArray = split('[ ,]', $path);
// Si le path est de format 'm 100 100 l 100 100 z' il faut recoller les morceaux
if(array_key_exists($pathArray[0], $this->pathType)){
reset($pathArray);
$j = 0;
do{
if(array_key_exists($pathArray[$j], $this->pathType)){
$pathArray[$j] = $pathArray[$j].$pathArray[$j+1];
$pathArray[$j+1] = '~';
$j++;
$newNb = count($pathArray);
for($k = $j; $k<=$newNb; $k++){
$pathArray[$k] = $pathArray[$k+1];
}
}else{
if($pathArray[$j] == '' || $pathArray[$j] == null)
unset($pathArray[$j]);
$j++;
}
}while(isset($pathArray[$j]));
if($this->_debug) $this->_log->message('Path reconstruit ! '.implode(', ',$pathArray));
}
$nbArray = count($pathArray);
$nbLine = (($nbArray-1)/2)-1;
@ -389,110 +451,63 @@ class SVGTOIMAGE{
$lastY = 0;
while ($i < $nbArray) {
// Changement de départ
if(substr($pathArray[$i], 0, 1) == 'M'){
if(strtolower(substr($pathArray[$i], 0, 1)) == 'm'){
$lastX = $this->_parseInt($pathArray[$i]);
$lastY = $this->_parseInt($pathArray[$i+1]);
$lastOpe = 'M';
$lastOpe = 'm';
$i=$i+2;
}elseif(substr($pathArray[$i], 0, 1) == 'L'){
// Ligne
}elseif(strtolower(substr($pathArray[$i], 0, 1)) == 'l' || (is_numeric($pathArray[$i]) && strtolower($lastOpe) == 'l')){
$newX = $this->_parseInt($pathArray[$i]);
$newY = $this->_parseInt($pathArray[$i+1]);
$this->_drawLine($lastX , $lastY , $newX , $newY , IMG_COLOR_STYLED);
$lastOpe = 'L';
$lastOpe = 'l';
$lastX = $newX;
$lastY = $newY;
$i=$i+2;
}elseif(substr($pathArray[$i], 0, 1) == 'H'){
// Ligne horizontale
}elseif(strtolower(substr($pathArray[$i], 0, 1)) == 'h' || (is_numeric($pathArray[$i]) && strtolower($lastOpe) == 'h')){
$newX = $this->_parseInt($pathArray[$i]);
$this->_drawLine($lastX , $lastY , $newX , $lastY , IMG_COLOR_STYLED);
$lastOpe = 'H';
$lastOpe = 'h';
$lastX = $newX;
$i++;
}elseif(substr($pathArray[$i], 0, 1) == 'V'){
// Ligne verticale
}elseif(strtolower(substr($pathArray[$i], 0, 1)) == 'v' || (is_numeric($pathArray[$i]) && strtolower($lastOpe) == 'v')){
$newY = $this->_parseInt($pathArray[$i]);
$this->_drawLine($lastX , $lastY , $lastX , $newY , IMG_COLOR_STYLED);
$lastY = $newY;
$lastOpe = 'V';
$lastOpe = 'v';
$i++;
}elseif(substr($pathArray[$i], 0, 1) == 'C'){
// Courbe
}elseif(strtolower(substr($pathArray[$i], 0, 1)) == 'c' || (is_numeric($pathArray[$i]) && strtolower($lastOpe) == 'c')){
$control1x = $this->_parseInt($pathArray[$i]);
$control1y = $this->_parseInt($pathArray[$i+1]);
$control2x = $this->_parseInt($pathArray[$i+2]);
$control2y = $this->_parseInt($pathArray[$i+3]);
$newX = $this->_parseInt($pathArray[$i+4]);
$newY = $this->_parseInt($pathArray[$i+5]);
if($this->_debug) $this->_log->message('Drawing curve : '.$lastX.' - '.$lastY.' - '.$control1x.' - '.$control1y.' - '.$control2x.' - '.$control2y.' - '.$newX.' - '.$newY);
$this->_drawCurve($lastX, $lastY, $control1x, $control1y, $control2x, $control2y, $newX, $newY, IMG_COLOR_STYLED);
// Algorithme de http://www.dreamstube.com/post/Bezier-Curves-In-PHP!.aspx ne fonctionne pas !
$cx=3*($control1x-$lastX);
$bx=3*($control2x-$control1x)-$cx;
$ax=$newX-$lastX-$cx-$bx;
$cy=3*($control1y-$lastY);
$by=3*($control2y-$control1y)-$cy;
$ay=$newY-$lastY-$cy-$by;
if($this->_debug) $this->_log->message('ax : '.$ax.', ay : '.$ay);
$function_x='('.$ax.')*$t*$t*$t+('.$bx.')*$t*$t+('.$cx.')*$t+'.$lastX;
$function_y='('.$ay.')*$t*$t*$t+('.$by.')*$t*$t+('.$cy.')*$t+'.$lastY;
$function_z=2;
$j=0;
for($t=0; $t<1; $t+=.01)
{
eval('$x_points[$j]=1*'.$function_x.';');
eval('$y_points[$j]=1*'.$function_y.';');
eval('$z_points[$j]=1*'.$function_z.';');
if($this->_debug) $this->_log->message('cx : '.$x_points[$j].', cy : '.$y_points[$j]*(-1).' d: '.$z_points[$j]);
imagearc($this->_image, $x_points[$j]+$this->_getImageWidth()/2, ($y_points[$j]*(-1))+$this->_getImageHeight()/2, $z_points[$j], $z_points[$j], 0, 360, $colorStroke);
$j++;
}
$lastX = $newX;
$lastY = $newY;
$lastOpe = 'c';
$i=$i+6;
}elseif(is_numeric(substr($pathArray[$i], 0, 1))){
switch($lastOpe){
case 'L':
$newX = $this->_parseInt($pathArray[$i]);
$newY = $this->_parseInt($pathArray[$i+1]);
$this->_drawLine($lastX , $lastY , $newX , $newY , IMG_COLOR_STYLED);
$lastX = $newX;
$lastY = $newY;
$i=$i+2;
break;
case 'H':
$newX = $this->_parseInt($pathArray[$i]);
$this->_drawLine($lastX , $lastY , $newX , $lastY , IMG_COLOR_STYLED);
$lastX = $newX;
$i++;
break;
case 'V':
$newY = $this->_parseInt($pathArray[$i]);
$this->_drawLine($lastX , $lastY , $lastX , $newY , IMG_COLOR_STYLED);
$lastY = $newY;
$i++;
break;
case 'Z':
if($this->_debug) $this->_log->error('2 bouclages dans une boucle');
$i++;
break;
default : //polyline
if($this->_debug) $this->_log->error('last opé inconnue '.$lastOpe);
$lastX = $this->_parseInt($pathArray[$i]);
$lastY = $this->_parseInt($pathArray[$i+1]);
$lastOpe = 'L';
$i=$i+2;
break;
}
}elseif(substr($pathArray[$i], 0, 1) == 'Z'){
// Dernière ligne droite
}elseif(strtolower(substr($pathArray[$i], 0, 1)) == 'z' || (is_numeric(substr($pathArray[$i], 0, 1)) && strtolower($lastOpe) == 'z')){
if($lastOpe == 'z' && $this->_debug) $this->_log->error('2 bouclages dans une boucle');
$this->_drawLine($lastX , $lastY , $this->_parseInt($pathArray[0]) , $this->_parseInt($pathArray[1]) , IMG_COLOR_STYLED);
$lastOpe = 'Z'; //utile?
$lastOpe = 'z'; //utile?
$i++;
}else
$i++; // au cas où pour éviter une boucle infinie.
// Polyline
}else{
$lastX = $this->_parseInt($pathArray[$i+2]);
$lastY = $this->_parseInt($pathArray[$i+3]);
$lastOpe = 'l'; // s'il n'a aucune lettre, c'est une polyline, donc des... lignes.
$i=$i+2;
}
if($this->_debug) $this->_log->message('counter :'.$i);
}
imagecolordeallocate( $this->_image, $colorStroke);
@ -732,6 +747,7 @@ class SVGTOIMAGE{
public function toImage($format = 'png', $path = null){
$writeDesc = null;
$this->_image = imagecreatetruecolor($this->_getImageWidth(), $this->_getImageHeight());
imagefilledrectangle($this->_image, 0, 0 , $this->_getImageWidth(), $this->_getImageHeight(), $this->_allocateColor('white'));
imagealphablending($this->_image, true);
//imageantialias($this->_image, true); // On ne peut pas gérer l'épaisseur des traits si l'antialiasing est activé... lol ?
foreach($this->_svgXML->children() as $element){