POV-Ray : Newsgroups : povray.documentation.inbuilt : image function : Re: image function Server Time
18 May 2024 12:20:24 EDT (-0400)
  Re: image function  
From:
Date: 26 Feb 2002 09:52:58
Message: <f47n7uo0cusc66jn0u66a8ini0n0sqhbm7@4ax.com>
On Tue, 26 Feb 2002 15:30:41 +0100, "Thorsten Froehlich" <tho### [at] trfde>
wrote:
> You can just use the function directly you want to get rid of the
> "pixel" effect.

That's obvious. The problem is to use image to _avoid_ direct function
calculation for the same coordinates. Imagine: You make poster 3000x3000.
There is flat object with pattern based on complicated function. This object
is projected onto image into area 300x300. This object has also many (20?)
reflections on other objects. Each reflection is smaller or the same size.
When I use AA of rendering and direct function in pattern then effect is
smooth but rendering is veeery slow becouse some calculations are performed
for similiar coordinates of pattern. So I want to speed things up making image
function. I don't want waste additional memory for high resolution of this
image function becouse memory is important in such large poster rendering. So
I use additional amount of time during parsing to prepare blured image
function. Looking at my experiments I can save 50% of memory used by not
blurred image with the same effect.

If above is still useles for you then EOT for me. I don't know how to convince
you of it.

ABX


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