POV-Ray: Newsgroups: povray.newusers: How to know the highest point of a sub-area of a highfield ?

POV-Ray : Newsgroups : povray.newusers : How to know the highest point of a sub-area of a highfield ?		Server Time 30 Jul 2024 06:28:11 EDT (-0400)

From: destroyedlolo
Subject: How to know the highest point of a sub-area of a highfield ?
Date: 24 Jul 2004 07:32:49
Message: <41025679.4080705@yahoo.com>

Hi all,

I have a hightfield and I put the camera on it's surface (thanks to 
trace() function and I add 10m to no be "inside" the HF).

Unfortunaly, my view point should be in a hole of my terrain so ... I 
can't see nothing in this case.

There is a way to find the maximum height of, let say, 100m around my 
view point ? (meters is the scale I use).

Thanks for your help.

Laurent

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From: Christoph Hormann
Subject: Re: How to know the highest point of a sub-area of a highfield ?
Date: 24 Jul 2004 07:55:01
Message: <cdtifi$6ut$1@chho.imagico.de>

destroyedlolo wrote:
> Hi all,
> 
> I have a hightfield and I put the camera on it's surface (thanks to 
> trace() function and I add 10m to no be "inside" the HF).
> 
> Unfortunaly, my view point should be in a hole of my terrain so ... I 
> can't see nothing in this case.
> 
> There is a way to find the maximum height of, let say, 100m around my 
> view point ? (meters is the scale I use).

Sure, you just have to sample the area of the heightfield with trace in 
steps not larger than the heightfield resolution.

But for ensuring the camera does not look at a 'wall' it is much more 
efficient to trace from the camera in viewing direction.

Christoph

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