On 24-2-2017 15:28, Kirk Andrews wrote:
> "omniverse" <omn### [at] charternet> wrote:
>> Thomas de Groot <tho### [at] degrootorg> wrote:
>>> On 22-2-2017 13:17, Thomas de Groot wrote:
>>>> This version does interesting things, different from the previous one.
>>
>> Fascinating stuff, as I watch fervently from the sidelines.
>>
>> Has me wondering if erosion could be accomplished via difference {} using
>> likewise cone+sphere stream/lake creation method.
>>
>> Bob
>
> Looks like that was something I was trying out, back in 2008. Looks like I was
> rendering out a flat image of just the rivers to be subtracted from the height
> map image.
>

The water seems to be above the surface. Also, stream patterns do not 
take the underlying landscape into account, with patterns happily 
crossing peaks. I guess that the pattern was not derived from this 
particular landscape but was just superposed on it for testing's sake. 
Using a flow map generated from a particular landscape that would be 
possible to do indeed. Wilbur, amongst others, can make such maps.

-- 
Thomas

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