[Bf-committers] Weights range in vgroups

Daniel Salazar - 3Developer.com zanqdo at gmail.com
Mon Aug 1 01:31:10 CEST 2011

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.


Daniel Salazar

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
> _______________________________________________
> Bf-committers mailing list
> Bf-committers at blender.org
> http://lists.blender.org/mailman/listinfo/bf-committers

More information about the Bf-committers mailing list