Weird coordinates after rotating, and checking object:modified

[walliski]

Hi

http://jsfiddle.net/Walliski/c6mcbtvx/

To reproduce:

1. Move rectangle to see coordinates in developer console (move by 1-2 px)
2. Rotate to see new weird coordinates, (1-2º is enough)
3. Move again 1-2 px, and new coordinates...

in step #2, the coordinates are set from middle of the rectangle, instead of being from the top left corner as otherwise.

Is this intended behavior, or is it a bug? Anyone else that got a similar issue, and know a workaround? Or should I use anything else than object:modified for capturing info on changed objects (size, angle and coordinates)?

[eightypop]

When you rotate an object around the center you end up setting the origin and coords to be based to the center.

 if (t.action === 'rotate') {
          this._setOriginToCenter(t.target);
        }
        else {
           ...

What ends up feeling wonky is that if you're then moving x/y position it switches back to a top-left origin which is actually the top-left corner before rotation. You get the effect of moving the object to the right and down quite a bit and then rotating around the top-left corner, which wasn't what I was expecting, at least.

To record an object's x, y, scale, rotation in a consistent coordinate space I'm using the getPointByOrigin( ... ) method to always use the center origin.

[asturur]

Use object property:
centeredRotation: false
to rotate around top left corner and not having coordinates bumping.