[Fluxus] HelloWorld

[Pete Carss]

That's making a lot more sense now.

How can I get a double sided texture? I've tried (backfacecull 0) and
(hint-cull-ccw) - I'm trying to locate the camera inside a sphere with an
Equirectangular image applied as a texture. I'm assuming that the default
light would illuminate this texture even inside the sphere?

Pete

On Fri, Feb 26, 2010 at 2:45 PM, Dave Griffiths <dave at pawfal.org> wrote:

> Hi Pete,
>
> It's easy to get lost in dome space - as by default the camera is at the
> origin, and you can't use the mouse to move around.
>
> I've changed the script so it sets a camera transform up looking at the
> origin down the z axis, I'm also drawing the origin with show-axis which
> makes it easier to get your bearings.
>
> (clear)
>
> (define dome (dome-build 6 180 2048))
>
> (define myobj (with-pixels-renderer (dome-pixels)
>        (build-nurbs-sphere 8 10))) ; make a sphere
>
> (with-pixels-renderer (dome-pixels)
>     (show-axis 1))
>
> (define (render-spheres n)
>    (cond ((not (zero? n))
>            (with-state
>                (translate (vector n 0 0)) ; move in x
>                (draw-instance myobj))     ; stamp down a copy
>            (render-spheres (- n 1)))))    ; recurse!
>
>
> ;set the view of the camera
> (dome-setup-main-camera 640 480)
>
> (with-pixels-renderer (dome-pixels)
>     (set-camera (mtranslate (vector 0 -1 -10))))
>
> (every-frame
>    (with-pixels-renderer (dome-pixels)
>         (with-state
>             (render-spheres 10)))) ; draw 10 copies
>
>
>
> On Fri, 2010-02-26 at 14:16 +0000, Pete Carss wrote:
> > Hello all,
> > I've been corresponding with Dave, preparing for an even in our dome
> > on Saturday. I'm having trouble with instancing when used in
> > combination with (dome-pixels) - it was suggested that the
> > conversation was better suited to this list...
> >
> >
> >
> >
> > (require fluxus-017/planetarium)
> >
> >
> > (define dome (dome-build 6 180 2048))
> >
> >
> > (define myobj (with-pixels-renderer (dome-pixels)
> >                 (build-nurbs-sphere 8 10))) ; make a sphere
> >
> >
> > (define (render-spheres n)
> >        (cond ((not (zero? n))
> >                (with-state
> >                (translate (vector n 0 0)) ; move in x
> >                (draw-instance myobj))     ; stamp down a copy
> >                (render-spheres (- n 1)))))    ; recurse!
> >
> >
> > ;set the view of the camera
> > (dome-setup-main-camera 1400 1050)
> >
> >
> > (every-frame
> >     (with-pixels-renderer (dome-pixels)
> >         (translate (vector 0 100 -100))
> >         (render-spheres 10))) ; draw 10 copies
> >
> >
> >
> >
> > This is an example, which includes adding (with-pixels-renderer) to
> > the definition of myobj, but I get no spheres at all now...?
> >
> >
> >
> >
> > Pete
>
>
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