Weird display group behavior (disappearing)

Solar2D General Questions/Discussion
#1

So, I’ve found an interesting bug, and was wondering if anyone else had encountered something similar, or had any ideas.

I create a display group, and insert into it some other display objects (images). Now, when I don’t do anything and the display group remains pristine, everything displays just fine, but the moment I try to move it on the x, or y, or scale it, or change it in any way, all of the items in the group disappear. Once the group is returned to it’s pristine condition (ex: i set its scale to 2, it disappears, the set it back to 1) the group returns to being visible.

Any ideas what could be causing this? [import]uid: 143007 topic_id: 29328 reply_id: 329328[/import]

#2

By default display groups reference points are top left as I remember(correct me if I’m wrong) so a possibility is you are settings its x to something which would be on screen if the reference point woudl be bottom left or center but since the reference point is on the top the whole group might move offscreen and not be visible. A good way to test this is to turn off display scaling and use the ipad retina simulator to see offscreen objects. [import]uid: 164950 topic_id: 29328 reply_id: 117906[/import]

#3

As soon as I create the group I set it’s reference point to CenterReferencePoint.
Also, I found something quite odd. Should I never touch the x and y values of the group, their defaults are:
groupX: 1073741824
groupY: -0.99948716163635
and if I change them to (0, 0) immediately after creation I get the same problem. Group disappears. [import]uid: 143007 topic_id: 29328 reply_id: 117909[/import]

#4

Problem solved. Setting reference point on an empty display group apparently messes things up. [import]uid: 143007 topic_id: 29328 reply_id: 117918[/import]