"Bald Eagle" <cre### [at] netscapenet> wrote:

>
> You can always post your WIPs (Works in Progress) and SDL in the appropriate
> sections as attachments so that we can see exactly what you're trying to do and
> see where any difficult spots and hard-to-spot errors may be.
>
> Welcome to the POV-Ray forums, and good luck    :)


Thank you all for your extremely useful advice!

I have been trying out some of the ideas suggested and I am now starting with
the simplest model and will expand it to a more complex and better looking one
after gaining some more experience. I just need to get to that point, where the
basic model works :).

The "prism" function seemed to me a good way of modelling the plate, due to the
given conditions in my case (1D vibration). For the animation I chose the linear
spline curve, since I managed to make it work in other animations I tried
before.

Given this, my approach consists of assigning each of the 6 points the plate is
built up of one linear spline curve generated by the vibration data. Since I
have not yet figured out how to work properly with the array definition and
reading in, I just copied a fraction of the data points from the .txt file into
my spline curve definition. Then I defined a translating vector transformation
"vtransform" along the spline curve and assigned it to a separately declared
point of the prism. Now, this sounds so simple and yet it is not working. I am
afraid, I am committing a huge mistake or omitting a "vital" aspect regarding
the sintax :/ .

It would be awesome, if you guys take a look at my (very simple) code and give
me a hint where the error is. I can't attach anything, so I have to copy my code
in here. Thank you very much in advance!


  background{White}
  camera {
    angle 20
    location <2, 10, -30>
    look_at <0, 0, -1>
    rotate <0,40,0>
  }
  light_source { <20, 20, -20> color White }




#declare P1 = <0, -3.7 >;
#declare P2 = <0, -4.3 >;
#declare P3 = <0, -3.8 >;
#declare P4 = <0, -4.1 >;
#declare P5 = <0, -3.7 >;
#declare P6 = <0, -4.1 > ;
#declare P7 = <0, -4 >  ;
#declare P8 = <0, -3.7 > ;
#declare P9 = <0, -3.8 > ;
#declare P10 = <0, -3.9 >;
#declare P11 = <0, -3.8 >;
#declare P12 = <0, -3.8 >;
#declare P13 = <0, -3.8 >;
#declare P14 = <0, -3.7 >;
#declare P15 = <0, -4.2 >;
#declare P16 = <0, -3.6 >;
#declare P17 = <0, -3.6 >;
#declare P18 = <0, -3.9 >;
#declare P19 = <0, -4.2 >;
#declare P20 = <0, -3.7 >;
#declare P21 = <0, -3.8 >;



#declare Spline_1 =
  spline {
    linear_spline

0.00,P1,
0.05,P2,
0.10,P3,
0.15,P4,
0.20,P5,
0.25,P6,
0.30,P7,
0.35,P8,
0.40,P9,
0.45,P10,
0.50,P11,
0.55,P12,
0.60,P13,
0.65,P14,
0.70,P15,
0.75,P16,
0.80,P17,
0.85,P18,
0.90,P19,
0.95,P20,
1.00,P21,

  }// end of spline ---------------
//---------------------------------------------


   prism {
    linear_sweep
    linear_spline
    0,
    0,
    7,
    <-2,-3>,<2,-3>, <2,0>, <2,3>, <-2, 3>, <-2,0>, <-2,-3>
    pigment { Blue }
  }

  #declare A = <-2,-3,0>;
  #declare Trans1 = transform{
            translate Spline_1(clock)};
  #declare B = vtransform(A,Trans1);

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