[Haskell-cafe] FRP demos and tutorials page

[Limestraël]

Really?
There are only 4 fundamental functions in Reactive?

Seems simpler than I thought...

Thanks, btw, I've been looking quite a long time to simple reactive tutos.

2010/5/10 Tom Poliquin <poliquin at softcomp.com>

>
> On Monday 10 May 2010 00:08, Jean-Marie Gaillourdet wrote:
>
> >> We have created are a set of demos and tutorials for
> >> FRP ("Conal reactive").   It consists of four demos: the simple furnace,
> >> the human controlled furnace, the hybrid robot sim, and the FRP robot
> sim.
>
> > since I never took the time to understand frp properly I thought it would
> > be helpful to look at some examples. I was able to compile and run the
> > first to programs after I managed to find out the dependencies. But I
> > failed to compile third one. I just got the a compiler error with
> > ghc-6.12.1 on Mac OS X 10.6, see below.
> ....
> ....
> > .... No instance for (MatrixComponent Double)
> ....
>  > .. and various other complaints about Doubles.
>
> Thanks Jean for trying the examples out!
>
> We'll look into this tomorrow. I think we are down rev a bit
> in our OpenGL.
> Our Doubles should be GLdoubles to make everybody
> happy. We'll upload new code when fixed and let you know.
>
> Tom
>
>
> On Monday 10 May 2010 00:08, Jean-Marie Gaillourdet wrote:
> > Hi,
> >
> > since I never took the time to understand frp properly I thought it would
> > be helpful to look at some examples. I was able to compile and run the
> > first to programs after I managed to find out the dependencies. But I
> > failed to compile third one. I just got the a compiler error with
> > ghc-6.12.1 on Mac OS X 10.6, see below.
> >
> > Best regards,
> > Jean
> >
> > leibniz:robot_sim jmg$ ./go
> > Compiling Generator
> > [1 of 2] Compiling Model            ( Model.hs, Model.o )
> > [2 of 2] Compiling Main             ( Main.hs, Main.o )
> > Linking main ...
> > Compiling Player
> > [1 of 5] Compiling ReadImage        ( ReadImage.hs, ReadImage.o )
> > [2 of 5] Compiling Sprites          ( Sprites.hs, Sprites.o )
> > [3 of 5] Compiling ViewSupport      ( ViewSupport.hs, ViewSupport.o )
> >
> > ViewSupport.hs:32:7:
> >     No instance for (MatrixComponent Double)
> >       arising from a use of `scale' at ViewSupport.hs:32:7-11
> >     Possible fix:
> >       add an instance declaration for (MatrixComponent Double)
> >     In the expression: scale
> >     In the definition of `scal': scal = scale
> >
> > ViewSupport.hs:100:9:
> >     No instance for (NormalComponent Double)
> >       arising from a use of `normal' at ViewSupport.hs:100:9-33
> >     Possible fix:
> >       add an instance declaration for (NormalComponent Double)
> >     In a stmt of a 'do' expression: normal (Normal3 nx ny nz)
> >     In the second argument of `($)', namely
> >         `do { normal (Normal3 nx ny nz);
> >               mapM_
> >                 (\ ((vx, vy, vz), tcoord)
> >                      -> do { texCoord tcoord;
> >                              .... })
> >                 (zip ([q0] ++ [q1] ++ [q2] ++ [q3]) ts) }'
> >     In the expression:
> >           renderPrimitive Quads
> >         $ do { normal (Normal3 nx ny nz);
> >                mapM_
> >                  (\ ((vx, vy, vz), tcoord)
> >                       -> do { texCoord tcoord;
> >                               .... })
> >                  (zip ([q0] ++ [q1] ++ [q2] ++ [q3]) ts) }
> >
> > ViewSupport.hs:102:18:
> >     No instance for (TexCoordComponent Double)
> >       arising from a use of `texCoord' at ViewSupport.hs:102:18-32
> >     Possible fix:
> >       add an instance declaration for (TexCoordComponent Double)
> >     In a stmt of a 'do' expression: texCoord tcoord
> >     In the expression:
> >         do { texCoord tcoord;
> >                vertex $ Vertex3 vx vy vz }
> >     In the first argument of `mapM_', namely
> >         `(\ ((vx, vy, vz), tcoord)
> >               -> do { texCoord tcoord;
> >                         vertex $ Vertex3 vx vy vz })'
> >
> > ViewSupport.hs:103:18:
> >     No instance for (VertexComponent Double)
> >       arising from a use of `vertex' at ViewSupport.hs:103:18-23
> >     Possible fix:
> >       add an instance declaration for (VertexComponent Double)
> >     In the first argument of `($)', namely `vertex'
> >     In the expression: vertex $ Vertex3 vx vy vz
> >     In the expression:
> >         do { texCoord tcoord;
> >                vertex $ Vertex3 vx vy vz }
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