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)
imagesetbrush — Set the brush image for line drawing
Opis
imagesetbrush
( resource
$image
, resource $brush
) : bool
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.
Uwaga
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!
Parametry
-
obraz -
Zasób obrazu, zwrócony przez jedną z funkcji tworzących obrazy, taką jak imagecreatetruecolor().
-
brush -
An image resource.
Zwracane wartości
Zwraca TRUE w przypadku powodzenia, FALSE w
przypadku błędu.
Przykłady
Przykład #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);
?>
Powyższy przykład wyświetli coś podobnego do:
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User Contributed Notes 1 note
brent at ebrent dot net ¶
17 years ago
