PHP. Руководство по PHP. 2005

imagefilledarc

(PHP4>= 4.0.6, PHP 5)imagefilledarc -- Draw a partial ellipse and fill it

Description

bool imagefilledarc (resource image, int cx, int cy, int w, int h, int s, int e, int color, int style)

imagefilledarc() draws a partial ellipse centered at cx, cy (top left is 0, 0) in the image represented by image. Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки. W and h specifies the ellipse's width and height respectively while the start and end points are specified in degrees indicated by the s and e arguments. style is 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'.

Пример 1. Creating a 3D looking pie


<?
//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);

?>

Замечание: Эта функция нуждается в GD версии 2.0.1 или выше.

imagefill

imagefilledellipse

Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.

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