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imagefilledarc (PHP 4 >= 4.0.6, PHP 5) imagefilledarc -- Draw a partial ellipse and fill it Descrizionebool imagefilledarc ( resource image, int cx, int cy, int width, int height, int start, int end, int color, int style )
Draws a partial ellipse centered at the specified coordinate in the
given image.
Elenco dei parametri
-
image
An image resource, returned by one of the image creation functions,
such as imagecreatetruecolor(). - cx
x-coordinate of the center
- cy
y-coordinate of the center
- width
The arc width
- height
The arc height
- start
The arc start angle, in degrees.
- end
The arc end angle, in degrees.
0° is located at the three-o'clock position, and the arc is drawn
clockwise.
- color
A color identifier created with
imagecolorallocate()
- style
A bitwise OR of the following possibilities:
IMG_ARC_PIE IMG_ARC_CHORD IMG_ARC_NOFILL IMG_ARC_EDGED
IMG_ARC_PIE and IMG_ARC_CHORD are
mutually exclusive; IMG_ARC_CHORD just
connects the starting and ending angles with a straight line, while
IMG_ARC_PIE produces a rounded edge.
IMG_ARC_NOFILL indicates that the arc
or chord should be outlined, not filled. IMG_ARC_EDGED,
used together with IMG_ARC_NOFILL, indicates that the
beginning and ending angles should be connected to the center - this is a
good way to outline (rather than fill) a 'pie slice'.
Valori restituiti
Restituisce TRUE in caso di successo, FALSE in caso di fallimento.
Esempi
Esempio 1. Creating a 3D looking pie
<?php
// create image
$image = imagecreatetruecolor(100, 100);
// allocate some solors
$white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
$gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0);
$darkgray = imagecolorallocate($image, 0x90, 0x90, 0x90);
$navy = imagecolorallocate($image, 0x00, 0x00, 0x80);
$darknavy = imagecolorallocate($image, 0x00, 0x00, 0x50);
$red = imagecolorallocate($image, 0xFF, 0x00, 0x00);
$darkred = imagecolorallocate($image, 0x90, 0x00, 0x00);
// make the 3D effect
for ($i = 60; $i > 50; $i--) {
imagefilledarc($image, 50, $i, 100, 50, 0, 45, $darknavy, IMG_ARC_PIE);
imagefilledarc($image, 50, $i, 100, 50, 45, 75 , $darkgray, IMG_ARC_PIE);
imagefilledarc($image, 50, $i, 100, 50, 75, 360 , $darkred, IMG_ARC_PIE);
}
imagefilledarc($image, 50, 50, 100, 50, 0, 45, $navy, IMG_ARC_PIE);
imagefilledarc($image, 50, 50, 100, 50, 45, 75 , $gray, IMG_ARC_PIE);
imagefilledarc($image, 50, 50, 100, 50, 75, 360 , $red, IMG_ARC_PIE);
// flush image
header('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?>
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NoteNota: This function requires GD 2.0.1 or later.
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