imagesetstyle

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

imagesetstyle — Çizgi tarzını ayarlar

Açıklama

imagesetstyle(GdImage $görüntü, array $tarz): bool

imagesetstyle() işlevi imageline() ve imagepolygon() gibi çizgi çizme işlevleri tarafından özel IMG_COLOR_STYLED veya IMG_COLOR_STYLEDBRUSHED renkli çizgilerini çizmek için kullanılan çizgi tarzlarını ayarlamakta kullanılır.

Bağımsız Değişkenler

görüntü: imagecreatetruecolor() gibi bir görüntü oluşturma işlevinden dönen bir GdImage nesnesi.
tarz: Piksel renklerinden oluşan bir dizi. Şeffaf bir piksel eklemek için IMG_COLOR_TRANSPARENT sabitini kullanabilirsiniz. tarz boş bir dizi olmamalıdır.

Dönen Değerler

Başarı durumunda true, başarısızlık durumunda false döner.

Örnekler

Aşağıdaki betik örneğinde bir tuvalin sol üst köşesinden sağ alt köşesine kesikli çizgi çizilmektedir:

Örnek 1 - imagesetstyle() örneği

<?php
header("Content-Type: image/jpeg");
$im  = imagecreatetruecolor(100, 100);
$b   = imagecolorallocate($im, 255, 255, 255);
$k = imagecolorallocate($im, 255, 0, 0);

// 5 kırmızı 5 beyaz piksellik kesikli bir çizgi çiz/
$style = array($k, $k, $k, $k, $k, $b, $b, $b, $b, $b);
imagesetstyle($im, $style);
imageline($im, 0, 0, 100, 100, IMG_COLOR_STYLED);

// imagesetbrush ile imagesetstyle kullanarak
//   mutlu yüzlerden bir çizgi çiz
$style = array($b, $b, $b, $b, $b, $b, $b, $b, $b, $b, $b, $b, $k);
imagesetstyle($im, $style);

$brush = imagecreatefrompng("http://www.libpng.org/pub/png/images/smile.happy.png");
$b2 = imagecolorallocate($brush, 255, 255, 255);
imagecolortransparent($brush, $b2);
imagesetbrush($im, $brush);
imageline($im, 100, 0, 0, 100, IMG_COLOR_STYLEDBRUSHED);

imagejpeg($im);
imagedestroy($im);
?>

Yukarıdaki örnek şuna benzer bir çıktı üretir:

Ayrıca Bakınız

imagesetbrush() - Çizgi çizmek için fırça görüntüsü oluşturur
imageline() - Bir çizgi çizer

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User Contributed Notes 7 notes

down

Michael_Todd_335 at yahoo dot com ¶

17 years ago

Watch out! If you pass imagesetstyle() an empty array as the second argument, it will crash your server!
I was messing with it just earlier and accidentally did so, and the page took a good minute to process, when my Apache server came up with the good ol' Windows 'Send Error Report' window.

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dazbert ¶

7 years ago

To clarify, for lines where the thickness is greater than 1, the total length of the $style array needs to be an exact divisor of the length of the line.

This is because the pattern is repeated lengthways and wraps onto the second row of pixels, causing staggering to occur.

So if you have 5 red and 5 white pixels, and you want a line length of 55 pixels, either change the length to a multiple of 10, or change the dashes to, say, 6 red and 5 white.

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Anonymous ¶

12 years ago

a shortcut for basic dashed lines, making it easy to adjust the lengths:

<?php

$length1 = 20;
$length2 = 10;
$style = array_merge(array_fill(0, $length1, $red), array_fill(0, $length2, $w));
imagesetstyle($im, $style);

?>

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-1

Wander ¶

17 years ago

Function to make a line with random fading:

<?php
    function fading_line($img,$sx,$sy,$ex,$ey){
        $r=rand(0,5);$g=rand(0,5);$b=rand(0,5);
        $l=sqrt((($ex-$sx)*($ex-$sx))+(($ey-$sy)*($ey-$sy)));
        for($i=0;$i<$l;$i++){
            $a = array(255-((255/$l)*$i), 255,0,(255/$l)*$i/2,(255/$l)*$i,(255-((255/$l)*$i))/2);
            $style[]=imagecolorallocate($img,$a[$r],$a[$g],$a[$b]);
        }
        imagesetstyle($img,$style);
        imageline($img,$sx,$sy,$ex,$ey,IMG_COLOR_STYLED);
    }
    
    fading_line($img,10,20,490,40);    // image, start x, start y, end x, end y
?>

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-1

Cruz at FtUC dot net ¶

18 years ago

When lines drawn with imagesetstyle seem to produce a thin white line only, make sure antialiasing is disabled.

<?
  imageantialias($im, false);
  $style = array($gridxcolor, $gridxcolor, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT);
  imagesetstyle($im, $style);
  imageline($im, $x, 0, $x, $ymax+5, IMG_COLOR_STYLED);
  imageantialias($im, true);
?>

Setstyle and Antialias don't go together.

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-2

php at imperium dot be ¶

14 years ago

Be aware that styles are applied towards the width of the line instead of linear.

To convert a style to be used for thick lines you can use the function below:



<?php

/*

ImageStyleThicken(<aStyle>,<iThickness>) --> <aThickStyle>



<aStyle> is the style array for a thickness of 1 (see imagesetstyle()).

<iThickness> is the new thickness to apply (see imagesetthickness()).



<aThickStyle> is the style array suitable for the given thickness.

*/

function ImageStyleThicken($_1,$_2) {

    $a = array();

    foreach ($_1 as $x) {

        $i = $_2;

        do $a[] = $x; while (--$i>0); }

    return $a;

}

?>

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-1

zackbloom at gmail dot com ¶

19 years ago

Use this to set the style to any combination of pixels.
You can pass as many modifiers as you wish.
Use the format [num]r[red]g[green]b[blue].

For example:

$im=dashed($im,"4r255g0b0","2r0g255b0","5r0g0b255");
imageline($im, 0, 0, 600, 600, IMG_COLOR_STYLED);

function dashed($im){
$size = func_num_args();
for($i = 0; $i < $size; $i++){
$arg = func_get_arg($i);
if(!is_resource($arg)){
$r=substr($arg,strpos($arg,"r")+1,
strpos($arg,"g")-strpos($arg,"r")-1);
$g=substr($arg,strpos($arg,"g")+1,
strpos($arg,"b")-strpos($arg,"g")-1);
$b=substr($arg,strpos($arg,"b")+1,
strlen($arg)-strpos($arg,"b"));
$color = imagecolorallocate($im,$r,$g,$b);
$x = substr($arg,0,strpos($arg,"r"));
$vals[$i] = array_fill(0,$x,$color);
}
}
for($k=0;$k<count($vals)+1;$k++)
if(array_key_exists($k,$vals)) $prop=array_merge($prop,$vals[$k]);
imagesetstyle($im, $prop);
return $im;
}

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