POV-Ray : Newsgroups : povray.binaries.images : More Bicubic Patches - 3 attachments Server Time: 17 Feb 2019 21:51:18 GMT
  More Bicubic Patches - 3 attachments (Message 1 to 4 of 4)  
From: Tor Olav Kristensen
Subject: More Bicubic Patches - 3 attachments
Date: 29 Dec 2003 05:43:35
Message: <3fefbf07@news.povray.org>
- But only a few this time.

The first image shows some bicubic patches
stitched together by a macro I made.

The second image also shows the grid that is
used to control all the patches.

And the thrid shows it all from above.

The heights around this "circle" is controlled
by entries in an array:

array[13][8] {
  {  0,  0,  0,  0,  0,  0,  0,  0 },
  {  0,  0,  0,  0,  0,  0,  0,  0 },
  {  0,  0,  0,  0,  0,  0,  0,  0 },
  {  2,  2,  1,  1,  1, -2,  2,  2 },
  {  2,  2,  1,  1,  1, -3,  2,  2 },
  { -2, -2,  0,  1,  0, -3,  1, -2 },
  {  1,  1,  1,  1,  3, -3,  1,  1 },
  {  1,  1,  1, -1,  4, -3,  1,  1 },
  {  2,  2, -1,  0,  2, -3,  2,  2 },
  {  2,  2, -1,  0,  2, -2,  2,  2 },
  {  0,  0,  0,  0,  0,  0,  0,  0 },
  {  0,  0,  0,  0,  0,  0,  0,  0 },
  {  0,  0,  0,  0,  0,  0,  0,  0 }
}

If you look at the grid you may find the
different heights around it.

The camera is set to orthographic for all the
three scenes, so the "perspective" may look a
bit odd.


Tor Olav


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Attachments:
Download 'Patch03_12.jpg' (28 KB)
Download 'Patch03_13.jpg' (71 KB)
Download 'Patch03_14.jpg' (80 KB)

Preview of image 'Patch03_12.jpg'
Patch03_12.jpg

Preview of image 'Patch03_13.jpg'
Patch03_13.jpg

Preview of image 'Patch03_14.jpg'
Patch03_14.jpg


 

From: Tor Olav Kristensen
Subject: Re: More Bicubic Patches - 3 attachments
Date: 29 Dec 2003 05:57:09
Message: <3fefc235@news.povray.org>
Tor Olav Kristensen <tor_olav_kCURLYAhotmail.com> wrote in 
news:3fefbf07@news.povray.org:

> 
> - But only a few this time.

It's 70 patches there.


Tor Olav


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From: ABX
Subject: Re: More Bicubic Patches - 3 attachments
Date: 29 Dec 2003 10:40:59
Message: <nt00vvoshsf1d1i8edobs7g60fbal7tc22@4ax.com>
On 29 Dec 2003 00:43:35 -0500, Tor Olav Kristensen
<tor_olav_kCURLYAhotmail.com> wrote:
> - But only a few this time.

Nice and interesting.
Are you able to make animated version of it where vertices flow up-down?
Are you able to make water with it to imitate waves?
Are you able to move object through grid to break waves and apply different
texturing to broken grid elements?
So we have a waves on ship body ;-)

ABX


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From: Tor Olav Kristensen
Subject: Re: More Bicubic Patches - 3 attachments
Date: 30 Dec 2003 06:21:10
Message: <3ff11956@news.povray.org>
ABX <abx### [at] abxartpl> wrote in
news:nt00vvoshsf1d1i8edobs7g60fbal7tc22@4ax.com: 

> On 29 Dec 2003 00:43:35 -0500, Tor Olav Kristensen
> <tor_olav_kCURLYAhotmail.com> wrote:
>> - But only a few this time.
> 
> Nice and interesting.

Thank you.


> Are you able to make animated version of it where vertices flow
> up-down? Are you able to make water with it to imitate waves?
> Are you able to move object through grid to break waves and apply
> different texturing to broken grid elements?
> So we have a waves on ship body ;-)

I see what you are thinking of Wlodek. It's an interesting idea.

The hard work would be to model exactly how the control grid should
be displaced around the hull of the ship.

But apart from that, it should be quite feasible.


Tor Olav


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