Bug: Pie chart

[IJmouri]

From manual page: https://php.net/imagickdraw.arc

---

If the arc is greater than half of its circle, it does not give a correct pie chart.

[joshtrichards]

Can you provide a specific example?

https://phpimagick.com/ImagickDraw/arc

https://usage.imagemagick.org/draw/#primitives

https://imagemagick.org/Magick++/Drawable.html

May be an upstream matter in ImageMagick itself if so.

[IJmouri]

`<?php

// create a new canvas object and a white image

$canvas = new Imagick();

$canvas->newImage(600, 600, 'grey');

image_pie($canvas, 300, 300, 200, 0, 150, 'red');

image_pie($canvas, 300, 300, 200, 150, 360, 'green');

// output the image

$canvas->setImageFormat('png');

header("Content-Type: image/png");

echo $canvas;

exit;

// FUNCTIONS

function image_arc( &$canvas, $sx, $sy, $ex, $ey, $sd, $ed, $color = 'black' ) {

//  draw arc on canvas

//  $sx, $sy, $ex, $ey specify a bounding rectangle of a circle with the origin in the middle

//  $sd, and $ed specify start and end angles in degrees



$draw = new ImagickDraw();

$draw->setFillColor($color);

$draw->setStrokeColor($color);

$draw->setStrokeWidth(1);

$draw->arc($sx, $sy, $ex, $ey, $sd, $ed);

$canvas->drawImage($draw);

}

function image_pie( &$canvas, $ox, $oy, $radius, $sd, $ed, $color = 'black' ) {

//  draw pie segment

//  $ox, $oy specify the circle origin

//  $sd, and $ed specify start and end angles in degrees

//  degrees start from 0 = East, and go clockwise



//  position 1 - convert degrees to radians and get first point on perimeter of circle

$x1     = $radius * cos($sd / 180 * 3.1416);

$y1     = $radius * sin($sd / 180 * 3.1416);



//  position 2 - convert degrees to radians and get second point on perimeter of circle

$x2     = $radius * cos($ed / 180 * 3.1416);

$y2     = $radius * sin($ed / 180 * 3.1416);



//  draw segment triangle - specify the 3 points and draw a polygon

$points = array(array('x' => $ox, 'y' => $oy), array('x' => $ox + $x1, 'y' => $oy + $y1), array('x' => $ox + $x2, 'y' => $oy + $y2));



image_polygon($canvas, $points, $color);



//  draw corrsesponding arc to complete the "pie" segment

image_arc($canvas, $ox - $radius, $oy - $radius, $ox + $radius, $oy + $radius, $sd, $ed, $color);

}

function image_polygon( &$canvas, $points, $color = 'black' ) {

//  draw a polygon on canvas



$draw = new ImagickDraw();

$draw->setFillColor($color);

$draw->setStrokeColor($color);

$draw->setStrokeWidth(1);

$draw->polygon($points);

$canvas->drawImage($draw);

}

?>
`

[IJmouri]

I have solved this problem.
Can you suggest me how I can add the solution to the php imagick documentation? @joshtrichards