Thread: [openvrml-develop] Vector Assignment

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openvrml-develop

[openvrml-develop] Vector Assignment

From: cheribhai <cha...@gm...> - 2010-03-01 12:48:05


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

and also 

  PosInter.keyValue = [0 0 0,  targetPosition[0] targetPosition[1]
targetPosition[2]]; 

but both don't work.

cheers 
Cherian
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Re: [openvrml-develop] Vector Assignment

From: Braden M. <br...@en...> - 2010-03-03 18:13:32

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...>

Re: [openvrml-develop] Vector Assignment

From: cheribhai <cha...@gm...> - 2010-03-23 16:58:24

Hello Braden,
                  The problem seems to be occurring when the field of an
external node is changed in a script node. I have attached an example where
I try to toggle between the  binding of two viewpoints from a script. The
bind values remain unchanged when using simple assignment.

Cheers - Cherian

http://old.nabble.com/file/p28003831/jsassign.wrl jsassign.wrl 


Braden McDaniel wrote:
> 
> 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...>
> 
> 
> ------------------------------------------------------------------------------
> Download Intel&#174; Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
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> 
> 

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Re: [openvrml-develop] Vector Assignment

From: Braden M. <br...@en...> - 2010-03-24 00:37:16

On Tue, 2010-03-23 at 09:58 -0700, cheribhai wrote: 
> Hello Braden,
>                   The problem seems to be occurring when the field of an
> external node is changed in a script node. I have attached an example where
> I try to toggle between the  binding of two viewpoints from a script. The
> bind values remain unchanged when using simple assignment.
> 
> Cheers - Cherian
> 
> http://old.nabble.com/file/p28003831/jsassign.wrl jsassign.wrl

        $ wget http://old.nabble.com/file/p28003831/jsassign.wrl
        --2010-03-23 20:35:00--  http://old.nabble.com/file/p28003831/jsassign.wrl
        Resolving old.nabble.com... 216.139.236.162
        Connecting to old.nabble.com|216.139.236.162|:80... connected.
        HTTP request sent, awaiting response... 410 Gone
        2010-03-23 20:35:00 ERROR 410: Gone.

:-(

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

Re: [openvrml-develop] Vector Assignment

From: cheribhai <cha...@gm...> - 2010-03-26 15:42:37

Hi Braden,
             Sorry about this. Figured out why it didn't work. Then tried to
edit the post but couldn't.

cheers - Cherian


Braden McDaniel wrote:
> 
> On Tue, 2010-03-23 at 09:58 -0700, cheribhai wrote: 
>> Hello Braden,
>>                   The problem seems to be occurring when the field of an
>> external node is changed in a script node. I have attached an example
>> where
>> I try to toggle between the  binding of two viewpoints from a script. The
>> bind values remain unchanged when using simple assignment.
>> 
>> Cheers - Cherian
>> 
>> http://old.nabble.com/file/p28003831/jsassign.wrl jsassign.wrl
> 
>         $ wget http://old.nabble.com/file/p28003831/jsassign.wrl
>         --2010-03-23 20:35:00-- 
> http://old.nabble.com/file/p28003831/jsassign.wrl
>         Resolving old.nabble.com... 216.139.236.162
>         Connecting to old.nabble.com|216.139.236.162|:80... connected.
>         HTTP request sent, awaiting response... 410 Gone
>         2010-03-23 20:35:00 ERROR 410: Gone.
> 
> :-(
> 
> -- 
> Braden McDaniel <br...@en...>
> 
> 
> ------------------------------------------------------------------------------
> Download Intel&#174; Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> openvrml-develop mailing list
> ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openvrml-develop
> 
> 

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