Draggable is not compatible with rotation

[GMartigny]

Information

• Your current navigator: Chrome v76
• The package and version you used: @pencil.js/draggable@1.10.3

Description

When a component is rotated (by itself or any of its parents) the draggable package will produce unexpected result. This impact other package like resizable and Slider that use draggable and prevent them to work when rotated.

A solution might be to climb the component ancestry to compute its absolute rotation and act accordingly in draggable.js.

Reproduce by

const circle = new Circle(scene.center, 200, {
    rotation: 0.25,
    fill: "red",
});

const square = new Square(undefined, 200);
square.draggable();
circle.add(square);

scene.add(circle);