> "Bruno Cabasson" <bru### [at] cabassoncom> wrote:
>> "And" <49341109@ntnu.edu.tw> wrote:
>>> Alain Martel <kua### [at] videotronca> wrote:

>>>>> Your cloud do have some great properties. Although it is unexpected simple(the
>>>>> pov-code). The fluffy appearance is what I want. And the coverage is moderate.
>>>>> But in fact the real geometry shows the top and bottom are truncated by the
>>>>> boundary(800m~1200m). I will think how to solve this in the future, but if you
>>>>> have idea I think it will be nice.
>>>>>
>>>>
>>>> You may use a planar pattern to hide that. Just scale and translate it
>>>> properly, and add a map or use an alternate wave type to control how it
>>>> need to fade near the container's edges.
>>>
>>> How do you combine these two(The original and the planar pattern)? I can't spend
>>> time to try it right now, but I wish to look your code (even a simple example).
>>
>> I think the planar (or equivalent) pattern can be used as an additional density
>> function (that will multiply with the main one). I did use this for some other
>> clouscapes atempts.
> 
> 
> Multiply is a straightforward idea that combine these functions. I have doubts
> about it because it seem change the original pattern (unnatural) ....but I
> hardly ever try it. You said that you have used it. Is the effect fine?
> 
> 
> 
> 

The planar pattern start at 1 on the X-Z plane and drop to zero 1 unit 
above and under it.

There is no distortion involved.

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