1847025 - Canvas arc is drawn incorrectly

Status: RESOLVED DUPLICATE of bug 1846613

(Core :: Graphics: Canvas2D, defect)

Description

[marcelionis]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Steps to reproduce:

I draw a simple arc which should be anticlockwise, but the arc is draw clockwise. This happens with specific angles only. Here is a code:

var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");

ctx.beginPath();
ctx.strokeStyle = "#FF6600";
ctx.lineWidth = 1;

var x = 200;
var y = 150;

ctx.arc(x, y, 90, -Math.PI/2, Math.PI/2, true);

ctx.stroke();

codepen:
https://codepen.io/team/amcharts/pen/JjexzYj/27840821bead34e7d21c04d8143aef8f?editors=1010

Actual results:

Arc is drawn to a wrong side (other browsers do it correctly).

Expected results:

The arc should be to the left.

Comment 1

[Alice0775 White]

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=14edc9bcbe5615f748cdb086881c6b983aedf04d&tochange=33d2377b255dbfbe7ca7d86e2211b6336f44bff4

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

:jrmuizel, since you are the author of the regressor, bug 1839470, could you take a look? Also, could you set the severity field?

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