`me.Ellipse` object limitations

[obiot]

grouping other tickets under this one :

• add rotation and scaling support for me.Ellipse shapes, including for collisions solving #583 me.Ellipsedo not support rotation and scaling (including for collision test)
• Ellipse collision tests only work with circles #584 me.Ellipsecollision tests only work with circles
• Implement shape transformations with matrix2d #771 Shape transformation is not implemented for me.Ellipse
• in webGL mode. strokeEllipse() and fillEllipse() are not implemented

[obiot]

All items in this meta-issue are now resolved:

• ✅ add rotation and scaling support for me.Ellipse shapes, including for collisions solving #583 Ellipse rotation and scaling — closed
• ✅ Ellipse collision tests only work with circles #584 Ellipse collision tests only work with circles — closed
• ✅ Implement shape transformations with matrix2d #771 Shape transformation with matrix2d — closed
• ✅ WebGL strokeEllipse() and fillEllipse() — implemented

Closing as complete.

[obiot]

Reopening — after closer inspection, ellipse rotation and transformation are still incomplete:

• Ellipse.rotate() has a // TODO : only works for circle comment (line 97) — it only rotates the position, not the shape itself
• Ellipse.transform() is a no-op with a // TODO (line 132)
• Ellipse collision tests with SAT still assume circular shapes

Updated checklist:

• add rotation and scaling support for me.Ellipse shapes, including for collisions solving #583 Ellipse rotation and scaling (including for collision) — rotate() only works for circles, transform() is a no-op
• Ellipse collision tests only work with circles #584 Ellipse collision tests only work with circles
• WebGL strokeEllipse() and fillEllipse() — implemented