Re: [openvrml-develop] Vector Assignment

[Braden M. <br...@en...>]

On Mon, 2010-03-01 at 04:40 -0800, cheribhai wrote: 
> 
> Hello,
>        A quick question on vector asssignment using openvrml. I have a
> javascript function where I am dynamically changing the key values of a
> position interpolator, but the assignment does not seem to work.
> I have tried 
>   PosInter.keyValue[1][0] = targetPosition[0]; // x
>   PosInter.keyValue[1][0] = targetPosition[1]; // y
                         ^
                         a typo, presumably.  :-)

>   PosInter.keyValue[1][2] = targetPosition[2]; // z

First off, you need to be using directOutput TRUE in order to set the
node field like this.

But assuming you've done that, I think this still doesn't work because
you end up setting the elements of a temporary SFVec3f that keyValue[1]
returns.  I think there's an argument to be made that this syntax should
work; but I haven't found a good way to do that with SpiderMonkey.

It should work to set the entire SFVec3f element at once:

        PosInter.keyValue[1] = targetPosition;

> and also 
> 
>   PosInter.keyValue = [0 0 0,  targetPosition[0] targetPosition[1]
> targetPosition[2]]; 
> 
> but both don't work.

MF* types are not JavaScript arrays; so I wouldn't expect that to work.

-- 
Braden McDaniel <br...@en...>