[Bf-committers] Why must sync selection be disabled to select UV islands?

[Paweł Łyczkowski]

gandalf3 wrote:
>
> Is there some trick to this that I'm missing?


You have to be in face select mode.

gandalf3 wrote:
>
> Plus it doesn't work if you don't have seams (though admittedly most of
> the time this is probably not the case).
>
> That reminds me, limit by seams doesn't seem to work for me. I mark all
> edges surrounding a bit of geometry as seams, then I select a vertex the
> middle, press Ctrl L and enable limit by seams in the redo panel.
> However the entire part remains selected.. Tested with 2.73a
>
> Is there some trick to this that I'm missing?
>
> On 03/18/15 02:52, Paweł Łyczkowski wrote:
>>
>> I also always missed this. When selecting in vertex select mode, I would
>> expect for vertices in other islands to be selected as well. I would use
>> it in face select mode though.
>>
>> I usually went around this by identifying where on the model is the
>> island I wanted selected, and then used select linked with limit with
>> seams turned on in the 3d View - but that's a roundabout way of doing 
>> this.
>>
>> Gaia wrote:
>>>
>>> I made a simple experiment:
>>>
>>> - i select "keep UV selection in sync"
>>> - then use the rubber band tool to select an UV island
>>>
>>> As a result i get the related vertices selected on the 3D View,
>>> just as expected. AND i also get all UV vertices selected
>>> which belong to other UV islands, which i also expect because
>>> i have actually chosen to keep UV in Sync with 3dView...
>>>
>>> Now here is my problem with your argumentation:
>>> If you say, the selection by UV Island is "wrong and unusable",
>>> what makes it ok to have the rubber band selector available,
>>> which actually "suffers" from the same issues?
>>>
>>> -gaia-
>>>
>>> On 18.03.2015 10:16, Antony Riakiotakis wrote:
>>>>
>>>> because selecting an island will also select its vertices, and those
>>>> vertices can belong to other uv islands, and if you select those
>>>> vertices you'll have to select uv vertices on other islands as well.
>>>> Ergo, you either select more islands - which makes the tool useless,
>>>> or you leave your selection state invalid.
>>>>
>>>> On 18 March 2015 at 08:02, gandalf3<zzyxpaw at gmail.com> wrote:
>>>>>
>>>>> I would be surprised if this hasn't been asked before, but finding old
>>>>> stuff on the mailing list isn't easy..
>>>>>
>>>>> Anyway, trying to select UV islands with L while sync selection is
>>>>> enabled gives the error "Cannot select linked when sync selection is
>>>>> enabled".
>>>>> Why must sync selection be disabled? I can't think of any obvious 
>>>>> reason
>>>>> why there would be a conflict of some sort.. As a matter of fact this
>>>>> seems like it would be a really useful ability.
>>>>>
>>>>> Is there some technical limitation which prevents this?
>>>>>
>>>>> --
>>>>> -gandalf3
>>>>>
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