Among other things, "JWV" <jwv|at|planet.nl> wrote:

>> - Also, some edges could have no "protrusion", just a more wavy shape
>> than the bare straight edge. ASCII picture:
>>                              ____
>>                             /    \
>>      ____                   \    /
>>   __/    \__  instead of  __/    \___
> 
> After staring at, thinking about, and realligning the ascii picture: Yes
> that would be possible (will try to implement that).

I realized you've already posted the code. I've looked more closely at the 
images and maybe you could find some time to "improve the shapes of the 
pieces. It would take some time and effort, but I believe it may be worth 
it. I include an attachment, because ASCII art is not good enough for this 
;-)

Note: if/when you use differences and intersections in your code, I guess it 
would be wise to add "manual" bounding boxes to improve the rendering 
times...

-- 
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby

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Attachments:
Download 'shapes.png' (13 KB)

Preview of image 'shapes.png'