POV-Ray : Newsgroups : povray.beta-test : Function image type mirrored vertically : Re: Function image type mirrored vertically Server Time
30 Jul 2024 00:19:33 EDT (-0400)
  Re: Function image type mirrored vertically  
From:
Date: 7 Apr 2002 12:36:24
Message: <vqs0bu03i34uou7ek8b0e6qre8q6t680cu@4ax.com>
On Sat, 6 Apr 2002 00:23:15 +0200, "Rune" <run### [at] mobilixnetdk> wrote:
> The function image type is mirrored vertically.

As I understand all those discussion (with my poor language):

When function 100, 100 {...} is performed it means that engine samples space
from <0,0,0> to <1,1,0> and makes grid of values. After sampling it isn't
coordinate system at all. It is internally flat grid/array[100][100] of values
just like grid with values of pixels/colors in images. Then it is passed to the
same procedure as typical image. This is separated procedure and it doesn't
metter what grid is. Grid is a grid, it is placed/mapped from <0,1,0> to <1,0,0>
becouse general rule for images is that first line of grid makes top line of
image. Right ?

ABX


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