Use a brush to create a thick line.
To create a 3x3 red brush:
<?php
$brush_size = 3;
$brush = imagecreatetruecolor($brush_size,$brush_size);
$brush_color = imagecolorallocate($brush,255,0,0);
imagefill($brush,0,0,$brush_color);
imagesetbrush($im,$brush);
?>
Then use imageline() or imagepolygon() with IMG_COLOR_BRUSHED as the color.
To stop using the brush, destroy it:
<?php imagedestroy($brush); ?>
The brush can also be created from an existing image.imagesetbrush
(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
imagesetbrush — Set the brush image for line drawing
Description
imagesetbrush() sets the brush image to be
used by all line drawing functions (such as imageline()
and imagepolygon()) when drawing with the special
colors IMG_COLOR_BRUSHED or
IMG_COLOR_STYLEDBRUSHED.
Caution
You need not take special action when you are finished with a brush, but
if you destroy the brush image (or let PHP destroy it), you must not use the
IMG_COLOR_BRUSHED or
IMG_COLOR_STYLEDBRUSHED colors until you have set a
new brush image!
Parameters
-
image A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
brush-
An image object.
Changelog
| Version | Description |
|---|---|
| 8.0.0 |
image and brush expect
GdImage instances now; previously, resources
were expected.
|
Examples
Example #1 imagesetbrush() example
<?php
// Load a mini php logo
$php = imagecreatefrompng('./php.png');
// Create the main image, 100x100
$im = imagecreatetruecolor(100, 100);
// Fill the background with white
$white = imagecolorallocate($im, 255, 255, 255);
imagefilledrectangle($im, 0, 0, 299, 99, $white);
// Set the brush
imagesetbrush($im, $php);
// Draw a couple of brushes, each overlaying each
imageline($im, 50, 50, 50, 60, IMG_COLOR_BRUSHED);
// Output image to the browser
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
imagedestroy($php);
?>The above example will output something similar to:
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User Contributed Notes 1 note
brent at ebrent dot net ¶
18 years ago
