Hi Xabi,
On Wed, 2005-09-28 at 10:19 +0200, etche xabi wrote:
> Hello all,
> I would like to know if there is a simple way to
> compute the screen position of a 3D object on my
> scene in order to emulate a mouse with a RV tools(and
> use what have been done with the mouse...)
> I see that we have a "getWorldToScreen" so i suppose
> that with the translation of my object i'm not far of
> what i want.
Yes, you need to multiple the worldToScreen with the toWorld of your
model, and you should be fine.
> And to finish i suppose that i have to compute the
> viewport difference (like on the caclViewRay)
Not sure what you mean here. The screen coordinates that the
worldToScreen gives you or OpenGL clip coordinates, i.e. from -1 to 1 in
x and y. If you want pixel coordinates you will have to scale them with
the viewport size.
> And it will be ok?
I sure hope so. ;)
Dirk
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