[sldev] Mouse on 3D object

[Tateru Nino]

There's ray-casting functions in the code that essentially inverts the
process of mapping 3D points within the frustum to 2D screen coordinates
-- that handles object touching, selection and more. I'm not 100% sure
where it is in the code, but virtually every mouse-click goes near it,
from memory.

On 26/01/2010 6:11 PM, Lawson English wrote:
> Ryan McDougall wrote:
>   
>> I think he's asking if there is any projection function that would
>> automatically convert screen coordinates to local prim coordinates.
>>
>> Cheers,
>>
>>   
>>     
> I suspect that the viewer functions that help the LSL touch functions do 
> this. Probably the control widgets for builders have much the same 
> functionality (if they are not the same st of functions underneath it 
> all). The Pupetteering code definitely could track the mouse on the 
> avatar and render control widgets but I don't know how accurate it is.
>
> The media plugin SDK has a way of tracking mouse movements along a prim, 
> but I'm not sure if its working yet or not.
>
> What he wants to do is certainly doable but I'm not sure how (yet).
>
> Lawson
>
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-- 
Tateru Nino
http://dwellonit.taterunino.net/