Widget rotation, pivot point

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kiske1
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Widget rotation, pivot point

Postby kiske1 » Mon Sep 05, 2016 14:52

Hello,

I'm rotating a window around z axis, so 2D rotation only, using Element::setRotation. I'm creating the quaternion like this:
w:1.0
x:0.0
y:0.0
z:desired angle

This rotates the window around it's center point, is it possible to rotate the window around an arbitrary pivot point (say for example the lower left corner)?

YaronCT
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Re: Widget rotation, pivot point

Postby YaronCT » Mon Sep 05, 2016 15:34

@kiske1: No, but it's easy to implement. I implement it and will let u know when it's ready (prolly won't take long).

kiske1
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Re: Widget rotation, pivot point

Postby kiske1 » Mon Sep 05, 2016 16:33

Thank you very much! :D

YaronCT
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Re: Widget rotation, pivot point

Postby YaronCT » Wed Sep 07, 2016 10:08

@kiske1:

NP :D

I've pushed an implementation to a branch "pivot". I've broken ABI so it's based on branch "v0" (which is API-compatible but not ABI-compatible with cegui releases 0.8.x or the cegui dev branch "v0-8"). Plz test it.

The pivot point is defined by a UVector3 (aka Vector3<UDim>), so u can use relative dimensions as well is arbitrary z values. The depth of a widget is considered to b 0, so it currently only makes sense to use an absolute dimension in z.

kiske1
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Re: Widget rotation, pivot point

Postby kiske1 » Fri Sep 30, 2016 13:15

Hi @YaronCT, I haven't got the time to check this out, but I haven't forgotten it, and I'll test as soon as possible.

YaronCT
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Re: Widget rotation, pivot point

Postby YaronCT » Fri Sep 30, 2016 19:35

@kiske1: Alright, do note though that the longer u wait, the more difficult it becomes for me to continue working on the issue coz I need to recall the details. And certainly while u don't test it it won't increase my motivation to start helping u on a new issue, that I now see you've asked, which also makes me wonder how it is u don't have time to check this out.

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Ident
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Re: Widget rotation, pivot point

Postby Ident » Fri Sep 30, 2016 19:39

Seems like you have no choice but to test is, kiske.
CrazyEddie: "I don't like GUIs"

kiske1
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Re: Widget rotation, pivot point

Postby kiske1 » Tue Oct 11, 2016 14:13

Hello!

I got commissioned to other projects, this is why I can only dedicate much less time that I'd like to this project which uses CEGUI. I feel really sorry if I seemed to be "ungrateful", it was not my intenction...

Today I got the time to test the pivot branch and it does exactly what I needed! Do you plan to include this in the 0-8 branch?

YaronCT
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Re: Widget rotation, pivot point

Postby YaronCT » Thu Oct 13, 2016 07:36

@kiske1: No, it breaks ABI therefore it's implemented in branch "v0", and that's where I'll merge it. That branch is API compatible with cegui 0.8.x so u should b able to use it without changing your code.

YaronCT
CEGUI Team
Posts: 448
Joined: Fri Jun 19, 2015 12:18
Location: Kiryat-Bialik, Israel

Re: Widget rotation, pivot point

Postby YaronCT » Sat Oct 22, 2016 10:31

@kiske1: I've merged it into branches "v0" and "default".


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