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I've been trying to create realistic rocks for some time - I think I'm
getting close!
All isosurface functions.
I'd like to add a rock staircase going over the center pass using
isosurfaces, any ideas how I could do it?
Mick
Post a reply to this message
Attachments:
Download 'rocks.jpg' (139 KB)
Preview of image 'rocks.jpg'
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I would slice out a section and insert the staircase- but it is not so
simple as that for most isosurfaces.
My solution is to render the isosurface in parts. I create a container that
bounds the isosurface so that I don't get spurious objects or "dust" from the
function. Then I insert my object. For your mountains, it may involve two or
three segments.
So imagine the staircase as a rectangular block- it is bounded by perhaps
three sides that will be in the scene. Make a left, rear, and right isosurface
"chunk" so that each reaches its container right at the edge of your stair, but
overall they will merge into a single mountain range when rendered.
Cheers!
Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip
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Mick Hazelgrove wrote:
> I've been trying to create realistic rocks for some time - I think I'm
> getting close!
>
> All isosurface functions.
>
> I'd like to add a rock staircase going over the center pass using
> isosurfaces, any ideas how I could do it?
>
> Mick
>
>
>
Very impressive!
A stair would look great.
Sebastian.
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This is wonderful. I've been doing some trials myself
with making isolandscapes. I have nothing that looks
this nice, my computer's just too slow...
=Bob=
"Mick Hazelgrove" <mic### [at] mhazelgrove fsnetcouk> wrote in message
news:3dea4918@news.povray.org...
: I've been trying to create realistic rocks for some time - I think I'm
: getting close!
:
: All isosurface functions.
:
: I'd like to add a rock staircase going over the center pass using
: isosurfaces, any ideas how I could do it?
: Mick
Post a reply to this message
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This took 12 hours!!! on a 1.5 gig machine!
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"Mick Hazelgrove" <mic### [at] mhazelgrovefsnetcouk> wrote in message
news:3dea8fab@news.povray.org...
: This took 12 hours!!! on a 1.5 gig machine!
Ouch! The last full scene I did had about 200,000
objects and still rendered in about 20 hours. I only have
a dual PIII 450 on NT. It was fast in its day... My next
work machine should be alot better though.
Would love to see the code...
Great picture!
=Bob=
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200,000 ...
Buh.
Jeez. :)
Aaron Gillies
x3rxes^yahoo.com
New York City
=Bob= wrote:
> "Mick Hazelgrove" <mic### [at] mhazelgrovefsnetcouk> wrote in message
news:3dea8fab@news.povray.org...
> : This took 12 hours!!! on a 1.5 gig machine!
>
> Ouch! The last full scene I did had about 200,000
> objects and still rendered in about 20 hours. I only have
> a dual PIII 450 on NT. It was fast in its day... My next
> work machine should be alot better though.
>
> Would love to see the code...
> Great picture!
> =Bob=
>
>
>
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I'll post the code when I've cleaned it up a little!
Mick
"=Bob=" <bob### [at] threestrandscom> wrote in message
news:3deab03a$1@news.povray.org...
> "Mick Hazelgrove" <mic### [at] mhazelgrovefsnetcouk> wrote in message
news:3dea8fab@news.povray.org...
> : This took 12 hours!!! on a 1.5 gig machine!
>
> Ouch! The last full scene I did had about 200,000
> objects and still rendered in about 20 hours. I only have
> a dual PIII 450 on NT. It was fast in its day... My next
> work machine should be alot better though.
>
> Would love to see the code...
> Great picture!
> =Bob=
>
>
>
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This looks very impressive. The rock structure reminds me of eroded chalk
rocks I have seen in Sardinia, for example (the sharp edges almost ruined my
shoes after a 3 hours walk). However, i.m.h.o., the y (or whatever axis is
upwards) scaling could be reduced to make it even more realistic.
Regards, Christoph
"Mick Hazelgrove" <mic### [at] mhazelgrovefsnetcouk> schrieb im Newsbeitrag
news:3dea4918@news.povray.org...
> I've been trying to create realistic rocks for some time - I think I'm
> getting close!
>
> All isosurface functions.
>
> I'd like to add a rock staircase going over the center pass using
> isosurfaces, any ideas how I could do it?
>
> Mick
>
>
>
Post a reply to this message
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Mick Hazelgrove wrote:
>
> I've been trying to create realistic rocks for some time - I think I'm
> getting close!
>
> All isosurface functions.
Very nice and quite different from most isosurface terrains i have made in
the past. At some places i suspect insufficiant max_gradient.
>
> I'd like to add a rock staircase going over the center pass using
> isosurfaces, any ideas how I could do it?
I would use a CSG with separate isosurface objects. Otherwise it will get
really slow. For a staircase a combination of difference (for the parts
carved out of the rock) and merge (for the parts built up) would probably
work.
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 07 Dec. 2002 _____./\/^>_*_<^\/\.______
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