[Bf-committers] Weights range in vgroups

[Daniel Salazar - 3Developer.com]

I don't think I expressed any "opinion", the functionality is useful
but probably not the *place* for this since vgroups are by definition
a 0.0-1.0 value. Blender has custom vertex data available in the C
API, but everything is so hardcoded that.. good luck using that in a
modifier or anywhere else. I keep looking forward to the nodetree and
for now I'll go with not enabling this where it doesn't belong.

cheers!

Daniel Salazar
3Developer.com



2011/7/31 Campbell Barton <ideasman42 at gmail.com>:
> On Sat, Jul 30, 2011 at 6:09 AM, Daniel Salazar - 3Developer.com
> <zanqdo at gmail.com> wrote:
>> Maybe, all i know is I tried setting via python and it clamped them..
>> i really wanted to store unclamped values that time
>>
>> Daniel Salazar
>> 3Developer.com
>>
>>
>>
>> 2011/7/29 Αντώνης Ρυακιωτάκης <kalast at gmail.com>:
>>> On 29 July 2011 21:29, Daniel Salazar - 3Developer.com <zanqdo at gmail.com>wrote:
>>>
>>>> VGroups are clamped internally to 0-1 range, I agree it would be nice
>>>> to overwrite it but even assigning the value directly via python i got
>>>> a clamping last time i tried. If you manage to make it work, I'd say
>>>> it is useful.. dunno about safe though considering the uses of vgroups
>>>> all over blender
>>>>
>>>> Daniel Salazar
>>>> 3Developer.com
>>>>
>>>>
>>>
>>> Maybe it's got to do with RNA property hard/soft limits?
>
> To go against popular opinion:
> -1 on allowing non-clamped vertex weights.
>
> Advantages for 0-1 weights are.
> - Simple for tools, weights can be inverts without worrying about
> becoming negative or corner cases (like inf weight when the values
> become very large).
> - Simple for weight painting (how to visualize weight of 10000?)
> - A bit easier to troubleshoot weight problems if you know that the
> range is clamped.
>
> One case where unclamped weights may be useful is the proximity vgroup
> modifier, but I would rather this just map min/max distance to 0-1,
> don't think this is a bad loss of functionality.
>
> --
> - Campbell
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