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
Descrizione
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.
Attenzione
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!
Elenco dei parametri
-
image -
Una risorsa immagine, restituita da una delle funzioni di creazione immagine, come imagecreatetruecolor().
-
brush -
An image object.
Valori restituiti
Restituisce true in caso di successo, false in caso di fallimento.
Log delle modifiche
| Versione | Descrizione |
|---|---|
| 8.0.0 |
image and brush expect
GdImage instances now; previously, resources
were expected.
|
Esempi
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);
?>Il precedente esempio visualizzerà qualcosa simile a:
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User Contributed Notes 1 note
brent at ebrent dot net ¶
18 years ago
