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From: Thomas de Groot
Subject: Interlocking heightfields
Date: 19 May 2008 04:17:38
Message: <483137a2@news.povray.org>
In povray.general, Stephen asked for a method to make a seamless patchwork 
of height_fields (topic: Interlocking heightfields; May 11th). John 
VanSickle was so kind to provide a couple of interesting macros. While 
learning to use them, I made this simple test image consisting of 16 
heightfields. I thought I could post it here, as info.

For more details, see: 
http://news.povray.org/povray.general/thread/%3Cnkge24ll63d2pdoe3qr8kvg29bgf79sf63%404ax.com%3E/?mtop=273531

and scroll down to John's message.

Thomas


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JVS_HFpatchwork.jpg


 

From: Stephen
Subject: Re: Interlocking heightfields
Date: 19 May 2008 07:20:29
Message: <djo234l8ud8mvphls790infpm3skca7fp7@4ax.com>
On Mon, 19 May 2008 10:17:37 +0200, "Thomas de Groot"
<t.d### [at] internlDOTnet> wrote:

>For more details, see: 

That looks really good, well done.
Too bad my new scene is all at sea. So I'm using your
TdG_RipplingWater material instead <g>
-- 

Regards
     Stephen


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From: John VanSickle
Subject: Re: Interlocking heightfields
Date: 19 May 2008 07:38:27
Message: <483166b3$1@news.povray.org>
Thomas de Groot wrote:
> In povray.general, Stephen asked for a method to make a seamless patchwork 
> of height_fields (topic: Interlocking heightfields; May 11th). John 
> VanSickle was so kind to provide a couple of interesting macros. While 
> learning to use them, I made this simple test image consisting of 16 
> heightfields. I thought I could post it here, as info.

When I used these macros, I gave the height fields a high enough 
resolution so that there was no need for any tricks with the normals. 
There was no smoothing, and the texture applied to the height fields had 
no normal component.  To make the height fields rougher, I put more 
roughness in the pigment used to generate the height fields, so that the 
height fields really were rougher, instead of merely appearing to be.

Regards,
John


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From: Thomas de Groot
Subject: Re: Interlocking heightfields
Date: 19 May 2008 08:29:30
Message: <483172aa@news.povray.org>
"John VanSickle" <evi### [at] hotmailcom> schreef in bericht 
news:483166b3$1@news.povray.org...

> When I used these macros, I gave the height fields a high enough 
> resolution so that there was no need for any tricks with the normals. 
> There was no smoothing, and the texture applied to the height fields had 
> no normal component.  To make the height fields rougher, I put more 
> roughness in the pigment used to generate the height fields, so that the 
> height fields really were rougher, instead of merely appearing to be.
>

Yes, there are all kind of possibilities indeed to make the height_fields 
look interesting. Thanks John, for your further suggestions, which I shall 
certainly try out too.

Thomas


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From: Thomas de Groot
Subject: Re: Interlocking heightfields
Date: 19 May 2008 10:20:46
Message: <48318cbe$1@news.povray.org>
...in particular, I overlooked that little parameter Test... :-)

Thomas


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From: Thomas de Groot
Subject: Re: Interlocking heightfields
Date: 20 May 2008 03:27:54
Message: <48327d7a@news.povray.org>
"Thomas de Groot" <t.d### [at] internlDOTnet> schreef in bericht 
news:48318cbe$1@news.povray.org...
> ...in particular, I overlooked that little parameter Test... :-)
>
> Thomas
>
>

...which altogether, leads finally to this.

Thomas


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JVS_HFpatchwork.jpg


 

From: Paolo Gibellini
Subject: Re: Interlocking heightfields
Date: 21 May 2008 09:18:30
Message: <48342126$1@news.povray.org>
Awesome!
;-)
Paolo
 >Thomas de Groot wrote:
> "Thomas de Groot" <t.d### [at] internlDOTnet> schreef in bericht 
> news:48318cbe$1@news.povray.org...
>> ...in particular, I overlooked that little parameter Test... :-)
>>
>> Thomas
>>
>>
> 
> ...which altogether, leads finally to this.
> 
> Thomas
> 
> 
>


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From: Thomas de Groot
Subject: Re: Interlocking heightfields
Date: 22 May 2008 03:47:01
Message: <483524f5$1@news.povray.org>
"Paolo Gibellini" <p.g### [at] gmailcom> schreef in bericht 
news:48342126$1@news.povray.org...
> Awesome!
> ;-)
> Paolo

This is just basic stuff as far as I am concerned. All the credit for the 
real work should go to John!!  :-)

Thomas


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From: John VanSickle
Subject: Re: Interlocking heightfields
Date: 22 May 2008 08:17:19
Message: <4835644f$1@news.povray.org>
Thomas de Groot wrote:
> "Paolo Gibellini" <p.g### [at] gmailcom> schreef in bericht 
> news:48342126$1@news.povray.org...
>> Awesome!
>> ;-)
>> Paolo
> 
> This is just basic stuff as far as I am concerned. All the credit for the 
> real work should go to John!!  :-)

The macro may need tweaking.  The rippling in the left-hand side of the 
image appears to be an artifact.

Regards,
John


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From: Thomas de Groot
Subject: Re: Interlocking heightfields
Date: 22 May 2008 10:25:02
Message: <4835823e$1@news.povray.org>
"John VanSickle" <evi### [at] hotmailcom> schreef in bericht 
news:4835644f$1@news.povray.org...

> The macro may need tweaking.  The rippling in the left-hand side of the 
> image appears to be an artifact.
>

I have been wondering about that. It appears indeed in the close up height 
field blocks.

Thomas


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