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Mike Raiford wrote:
> Mike Raiford wrote:
>> It looks good, except, it's gone plaid...
>>
>> Looks like everything worked as expected, except the left edge and top
>> edge didn't have appropriate normals, causing a plaid effect.
>
> Hmmm... An attempt, using the mean delta between two rows or columns.
>
>
> ------------------------------------------------------------------------
>
Haha! Perfection!
Instead of the mean of the deltas, I used the median of the deltas!
Post a reply to this message
Attachments:
Download 'deplaided_median.jpg' (64 KB)
Preview of image 'deplaided_median.jpg'
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On Mon, 31 Aug 2009 09:21:24 -0500, Mike Raiford <mraXXXiford.at.@g1023mail.com>
wrote:
>Haha! Perfection!
Congratulations Mike, but excuse my ignorance. What is the difference between
normal maps and bump maps?
--
Regards
Stephen
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Stephen wrote:
> Congratulations Mike, but excuse my ignorance. What is the difference between
> normal maps and bump maps?
A normal map stores the (relative) surface normal vectors in the RGB
channels of the image, whereas a bump map (which POV-Ray uses) stores
the perceived height of the surface as a gray value.
Normal maps are actually more flexible in how they can alter the surface
normal of an image than bump maps. But, obviously these don't work in
POV-Ray yet.
--
~Mike
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On Mon, 31 Aug 2009 11:11:21 -0500, Mike Raiford <"m[raiford]!at"@gmail.com>
wrote:
>Stephen wrote:
>
>> Congratulations Mike, but excuse my ignorance. What is the difference between
>> normal maps and bump maps?
>
>A normal map stores the (relative) surface normal vectors in the RGB
>channels of the image, whereas a bump map (which POV-Ray uses) stores
>the perceived height of the surface as a gray value.
>
>Normal maps are actually more flexible in how they can alter the surface
>normal of an image than bump maps. But, obviously these don't work in
>POV-Ray yet.
Thanks Mike,
I could have Googled it but I was doing an "Invisible" :P
What applications are they used in?
--
Regards
Stephen
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Stephen wrote:
> Thanks Mike,
> I could have Googled it but I was doing an "Invisible" :P
> What applications are they used in?
The one I've been messing with was output by the game Spore, when I
exported my creature to a mesh.
I think Blender and other modeling programs use them as well. I'm
betting inside a lot of games that use D3D hardware probably use them,
since they can give better surface normal results. Many of the
commercial 3D packages can use them, too.
--
~Mike
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> What applications are they used in?
Like, every 3d app beside POVRay.
[/rant]
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Roman Reiner wrote:
>> What applications are they used in?
>
> Like, every 3d app beside POVRay.
>
> [/rant]
Something like that :-D
--
~Mike
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On Mon, 31 Aug 2009 14:23:53 -0500, Mike Raiford <"m[raiford]!at"@gmail.com>
wrote:
>Roman Reiner wrote:
>>> What applications are they used in?
>>
>> Like, every 3d app beside POVRay.
>>
>> [/rant]
>
>Something like that :-D
Well my ignorance is bliss since I don't play games and only use Pov. Except
maybe Poser but I don't use the render o/p much.
Heigh Ho! :D
--
Regards
Stephen
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Mike Raiford wrote:
> Mike Raiford wrote:
>> Mike Raiford wrote:
>>> It looks good, except, it's gone plaid...
>>>
>>> Looks like everything worked as expected, except the left edge and
>>> top edge didn't have appropriate normals, causing a plaid effect.
>>
>> Hmmm... An attempt, using the mean delta between two rows or columns.
>>
>>
>> ------------------------------------------------------------------------
>>
>
> Haha! Perfection!
>
> Instead of the mean of the deltas, I used the median of the deltas!
>
>
>
>
> ------------------------------------------------------------------------
>
used map:
Post a reply to this message
Attachments:
Download 'test.jpg' (57 KB)
Preview of image 'test.jpg'
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From: Thomas de Groot
Subject: Re: Normal map to bump map ... plaid.
Date: 1 Sep 2009 05:33:50
Message: <4a9cea7e@news.povray.org>
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"Mike Raiford" <"m[raiford]!at"@gmail.com> schreef in bericht
news:4a9c0807$1@news.povray.org...
> I think Blender and other modeling programs use them as well. I'm betting
> inside a lot of games that use D3D hardware probably use them, since they
> can give better surface normal results. Many of the commercial 3D packages
> can use them, too.
Ah! I remember now that GeoControl (a heightfield program) can generate
normal maps too. I always wondered what I could do with them... in Pov I
mean... :-)
Thanks for lighting my dim understanding torch...
Thomas
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