what are you trying to do ..

a simple cube with all same round edges ?
a piece of sugar with same round edge radius?
a tronqued pyramid ?


something else



news:200### [at] availableyet...
> hello,
>
> I did fight again through Pov-man related to prisms but did not find any
solution for this:
> aim is to produce a nearly quadratic prism with rounded edges.
> superellipsoid does not fulfill my needs because one side is shorter than
opposit one.
> radius should be low|small(?).
> but now cubic_spline in superellipsoid produces stars at the corners.
>
> does anybody have a clue, why? and how can it be done better?
>
> thank you in advance
>
> code follows:
> #version 3.6
>
> //povray +Iprismtest.pov +Oprismtest.png +W640 +H480 +A0.01 +p +Q9
>
> camera {
>    location <0,3,0>
> look_at <0,0,-0>
> }
>
> light_source {
> < 0,10,0>
> color rgb <255,255,255>/255
> }
>
> #declare ar_prism = array[15]{
> <2,-1.9>,
>
> <1.85,1.95>,
> <1.7,2>,
> <-1.7,2>,
> <-1.85,1.95>,
>
> <-1.9,1.8>,
> <-2,-1.9>,
> <-1.95,-2.05>
> <-1.8,-2.1>
>
> <1.8,-2.1>,
> <1.95,-2.05>,
> <2,-1.9>,
> <1.9,1.8>,
> <1.85,1.95>,
>
> <1.7,2>
> }
>
> #declare pricnt = 0;
> #declare max_pricnt = dimension_size(ar_prism,1);
> prism {
> cubic_spline
> //linear_spline
> 0,
> 1,
> max_pricnt,
> #while (pricnt<(max_pricnt-1))
> ar_prism[pricnt],
> #declare pricnt = pricnt + 1;
> #end //while
> ar_prism[pricnt]
> pigment { color <255,255,255>/255 }
> scale <0.3,1,0.25>
> }
>
> #declare cnt = 0;
> #declare max_cnt = dimension_size(ar_prism,1);
> union{
> #while (cnt<max_cnt)
> sphere {
> <ar_prism[cnt].x, 4, ar_prism[cnt].y>, .05
> pigment { color <255,0,0>/255 }
> }
> #declare cnt = cnt + 1;
> #end //while
> scale <0.3,0.25,0.25>
> }
>
>

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