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Blue Herring <pov### [at] bherring cotse net> wrote:
> That looks really neat, like you could reach out and touch it. Are
> those all isosurfaces?
No, just one single mesh, copied and rotated randomly before placement. It's a
superellipsoid deformed with a very turbulent bozo pattern. Took quite a long
time to render, but only because of sub-pixel detail affecting the
antialiasing/radiosity.
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"Bill Pragnell" <bil### [at] hotmail com> wrote:
> Hi all
>
> I'm playing with a new idea for a CGSphere (http://www.cgsphere.com for the
> unfamiliar). The image below is my new version of the ground plane - the rules
> say don't modify the ground plane, but since many entries don't feature it at
> all I think I'm safe. I've not seen this done with the ground before so I
> thought I'd see if it were easy.
>
> It is.
Aha, I've been wondering about those types of images with the curved tiled
background like the middle of a half-pipe. I assume you used the mesh relief
macros to deform the block? If so, what what the mesh resolution? These look
really great!
About the rule-bending Bill, though it says: "The grid plane must remain mapped
with the provided grid texture and it may not be edited in any way (texture
included)," but I saw plenty of top-rated images that modified the tiles a lot.
-Rob
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"Bill Pragnell" <bil### [at] hotmail com> schreef in bericht
news:web.4860dc9e7a1df211731f01d10@news.povray.org...
> Hi all
>
> I'm playing with a new idea for a CGSphere (http://www.cgsphere.com for
> the
> unfamiliar). The image below is my new version of the ground plane - the
> rules
> say don't modify the ground plane, but since many entries don't feature it
> at
> all I think I'm safe. I've not seen this done with the ground before so I
> thought I'd see if it were easy.
>
Perfect, Bill!
I don't think this really infringes CGSphere rules. Like Robert said, there
is a wide latitude to interpret the background, and I suppose that as long
as the principle is still recognizable, you are within the limits allowed
(whatever that may be) :-)
Thomas
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"Robert McGregor" <rob### [at] mcgregorfineart com> wrote:
> Aha, I've been wondering about those types of images with the curved tiled
> background like the middle of a half-pipe. I assume you used the mesh relief
> macros to deform the block? If so, what what the mesh resolution?
Sure did! Mesh resolution was between 300 and 400.
> About the rule-bending Bill, though it says: "The grid plane must remain mapped
> with the provided grid texture and it may not be edited in any way (texture
> included)," but I saw plenty of top-rated images that modified the tiles a lot.
Yes, I agree. I think this will be a far purer entry than many!
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Another version. I've moved the light source to bring out the relief more
clearly, and changed the erosion slightly. This rendered in about an hour (on a
relatively slow machine).
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Attachments:
Download 'cgsphere5.jpg' (339 KB)
Preview of image 'cgsphere5.jpg'
![cgsphere5.jpg](/povray.binaries.images/attachment/%3Cweb.48624d0b9c465bad731f01d10%40news.povray.org%3E/cgsphere5.jpg?preview=1)
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Bill Pragnell napsal(a):
> Another version. I've moved the light source to bring out the relief more
> clearly, and changed the erosion slightly. This rendered in about an hour (on a
> relatively slow machine).
>
>
> ------------------------------------------------------------------------
>
This one looks a bit like snow
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Another version, coloured. I'm not sure I like this colour; I may go back to a
blue/grey slate-type colour, but more granite-like. Or maybe a sandstone-like
texture. Hmm. The grass isn't quite right either but this was only a first
stab!
Bill
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Attachments:
Download 'cgsphere6.jpg' (331 KB)
Preview of image 'cgsphere6.jpg'
![cgsphere6.jpg](/povray.binaries.images/attachment/%3Cweb.4864d7bf9c465bad731f01d10%40news.povray.org%3E/cgsphere6.jpg?preview=1)
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"Bill Pragnell" <bil### [at] hotmail com> schreef in bericht
news:web.4864d7bf9c465bad731f01d10@news.povray.org...
> Another version, coloured. I'm not sure I like this colour; I may go back
> to a
> blue/grey slate-type colour, but more granite-like. Or maybe a
> sandstone-like
> texture. Hmm. The grass isn't quite right either but this was only a first
> stab!
>
Basically, the color looks allright. It is mainly the color gradient on the
smooth faces that I find distracting.
Thomas
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Bill Pragnell wrote:
> Another version, coloured. I'm not sure I like this colour; I may go back to a
> blue/grey slate-type colour, but more granite-like. Or maybe a sandstone-like
> texture. Hmm. The grass isn't quite right either but this was only a first
> stab!
>
> Bill
>
>
> ------------------------------------------------------------------------
>
Nice. I guess you are matching the color map to the deforming pattern?
I was playing with that a bit too. Of course once the mesh is
deformed it not longer quite matches the original pattern. But soft
effects are possible and carry the illusion to a degree.
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"Bill Pragnell" <bil### [at] hotmail com> wrote:
> Another version, coloured. I'm not sure I like this colour; I may go back to a
> blue/grey slate-type colour, but more granite-like. Or maybe a sandstone-like
> texture. Hmm. The grass isn't quite right either but this was only a first
> stab!
>
> Bill
Bill, your entry is looking great. I like the warmer tones.
I assume you set up your grid with a loop of some sort? Care to share?
Thanks,
Rob
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