arcTo does not work

[bogdan-nourescu]

This is the code.
let size=500;
let x1=0;
let x2=size/2;
let x3=size;
let y1=size/32;
let y3=size/32;
let y2=size/2;

ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.arcTo(x2, y2, x3, y3, 200);
ctx.lineTo(x3, y3);
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.lineTo(x3, y3);
ctx.stroke();

[mvduin]

More precisely: for shallow angles (arc spans less than 90 degrees) arcTo incorrectly determines the origin of the arc, and consequently the start/end tangent points.

It appears to work correctly for sharp angles.

[mvduin]

Actually, it only works for sharp angles (arcs of 90 degrees or more) in the clockwise direction. Sharp angles in counter-clockwise direction have the correct origin but wrong start/end angles. Shallow angles in counter-clockwise direction have both problems.

[bogdan-nourescu]

I made a clone of the project and fixed it. You can check my fix here:
my repo clone

[BorisTheBrave]

@bogdan-nourescu I see you've fixed the shallow arc issue. But if I'm not wrong, you didn't fix the anticlockwise issue. I've got a fix for that to share with anyone who is maintaining their repo, let me know.