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On 19.08.2017 04:23, Stephen wrote:
> On 19/08/2017 07:04, Sven Littkowski wrote:
>> Intention:
>>
>> Using the "Difference" function to create caves and tunnels inside a
>> square-shaped piece of Martian surface (a hollow mesh object).
>>
>> What are your solutions, to transfer what is now a mesh, into a solid
>> object. I believe these objects need to be solid, in order to create
>> caves and tunnels through Difference into that body.
>>
>
>
> You are thinking about it wrongly.
> There are no solid mesh objects. The keyword "hollow" has nothing to do
> with an object not being solid. It is used for media containers.
> You should think in terms of the mesh not having any holes. Then you can
> use it with csg without artefacts. In the animation below I intersected
> the mesh of Ariel (the ghost) was intersected with a cub then filled
> with media. The hollow keyword was used for that.
>
> http://www.tc-rtc.co.uk/member/imagenewdisplay/index176.html
>
> When I was creating the df3s for Dhalgren with Thomas. I had a lot of
> trouble with the meshes when they had holes in them. (I had to manually
> edit the slices that make up the image sequence.)
>
> http://news.povray.org/povray.binaries.images/thread/%3C58343a6a@news.pov
ray.org%3E/
>
>
>
>
Thanks. The first link requires a username and password, was not able to
see the animation just like that.
Nonetheless, good to know I can still work with division. Will give a try.
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