[sldev] Re: [VWR] change an object?

[Anna Gulaev]

Update: here's something that seems to work.

        LLVolumeParams params;
        profileparams = params.getProfileParams();
        profileparams.setCurveType( LL_PCODE_PROFILE_CIRCLE);
        object->updateVolume( params);


On 2/25/08, Anna Gulaev wrote:
>
> I'd like to be able to change the shape of an object.
>
> I have an object of this type...
>
>         LLViewerObject *object
>
> I'm able to get its parameters like this...
>
>
> object->getVolume()->getParams().getProfileParams().getCurveType();
>
> I'd like to change its parameters, something like this...
>
>         params = object->getVolume()->getParams();
>         profileparams = params.getProfileParams();
>
>         profileparams.setCurveType( LL_PCODE_PROFILE_CIRCLE);
>
> If I take a peak at the curve type now...
>
>         llinfos << (int) profileparams.getCurveType() << llendl;
>
> I can see that it's been changed. Now to tell the server about it...
>
>         object->updateVolume( params);
>
> And this does...nothing. I can follow through with a debugger to find the
> point at which it decides to do nothing. That goes something like this...
>
> LLViewerObject::setVolume
>         LLPrimitive::setVolume
>                 if ( volume_params == mVolumep->getParams() && (
> volume_detail == mVolumep->getDetail())
>
> It passes that conditional and returns FALSE, without updating geometry.
> Since I don't know what it's *supposed* to do, I don't know if this is good
> or bad, but it looks to me like it's deciding that nothing has changed. Am I
> not supposed to make changes  to the original parameters? Do I need to make
> changes to a copy? I tried that and got the same results.
>
> Is there a concise snippet of code somewhere that shows how to make a
> change--any change--to an object?
>
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