Jeremy M. Praay wrote:
> "Jim Charter" <jrc### [at] msncom> wrote in message 
> news:421115c3$1@news.povray.org...
> 
>>Jeremy M. Praay wrote:
>>
>>>UV-mapping?  Blasphemy!  ;-)
>>>
>>>It's all procedural.
>>
>>Okay ;) I would have thought it odd if it wasn't but I just wanted to be 
>>sure.  I think to be fair, if you use the hf_cylinder macro you are using 
>>a type of uv mapping implicitly, in the sense that a uv space is being 
>>projected, which is what I meant.
> 
> 
> Ahh.  Ok, then.  I'll forgive the heresy.  ;-)
> 
> I actually looked at the hf_cylinder macro, and it scared me, so I simply 
> used a isosurface-pigment-image_map-thing.  I have no idea how to refer to 
> it, but it's something I've used before, so it was easy to adapt.  I think 
> Christoph Hormann does something similar in some of the iso_csg library 
> macros (IC_HF_Cylinder).
> 
> 


Okay, so you are doing the thing I couldn't picture.  I'd forgotten 
about the IC_HF_Cylinder() macro in iso_csg. ( It does tend to confuse 
the term heightfield or hf which I normally would use to mean mesh. ) 
My mistake.   So that makes my reference to UV space implicit only in 
the fact of the image_map keyword and that's about it.  I'll shutup now.



> 
> I should probably restate that.  I had a cylinder for the box, then I 
> created the fingers by differencing cylinders (turned 90 degrees) from a 
> cylinder (the same size as the box) and then unioning the box-cylinder with 
> the differenced (fingers) cylinder and translating the differenced one 
> slightly -z, so that the fingers would stick out.  But then I realized that 
> rounding the differenced parts was nearly impossible, and without some 
> rounded edges on the fingers, it just didn't look right, so I gave up on 
> that, and turned to heightfields, which up to that point, I hadn't used.
> 
> To be technically correct, the rounded edges (on top of the lid) which you 
> see now are actually the Round_Cylinder_Union.
> 
> I think I'll add the source to the pov-ray wiki, though I might want to 
> clean it up a little bit first.
> 
Yeah, after I posted I realized what you meant.  Duh.

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