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imagefilledarc

PHP function Edit on GitHub ✎

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

Draw a partial arc and fill it

Description

imagefilledarc(GdImage $image, int $center_x, int $center_y, int $width, int $height, int $start_angle, int $end_angle, int $color, int $style): true

Draws a partial arc centered at the specified coordinate in the given image.

Parameters

center_x

x-coordinate of the center.

center_y

y-coordinate of the center.

width

The arc width.

height

The arc height.

start_angle

The arc start angle, in degrees.

end_angle

The arc end angle, in degrees. 0° is located at the three-o'clock position, and the arc is drawn clockwise.

color

Color

style

A bitwise OR of the following possibilities:

  1. IMG_ARC_PIE
  2. IMG_ARC_CHORD
  3. IMG_ARC_NOFILL
  4. 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'.

Return Values

Always

Changelog

VersionDescription

Examples

Creating a 3D looking pie

php
<?php

// create image
$image = imagecreatetruecolor(100, 100);

// allocate some colors
$white    = imagecolorallocate($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);
?>

The above example will output something similar to: Output of example : Creating a 3D looking pie

Source: reference/image/functions/imagefilledarc.xml · from the official PHP manual (php/doc-en)