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"Chris Huff" wrote:
> I chose to have upper left be <0,1,0> and lower right
> be <1,0,0> for all of the filters which use pigments,
> so it would be easy to control the filter with an
> image_map(useful for logos, etc). If it is "centered",
> the image_map has to be translated into position.
But <0,1,0> is *lower* left! See scene in end of message.
> I really didn't even think about camera normals...
> I think the method I chose is more intuitive and easier
> to use.
When using image_maps, yes. When using ripples, spherical, boxed, and many
other patterns, no!
The normal_in_camera feature and the patterned_blur feature really are very
much alike, so I think it would be quite natural to make the alignment work
the ame way too.
> > 2) Make the amount of blur resolution-independent.
> > Blur the image based on % of width or something instead
> > of in pixels.
>
> This is certainly a good suggestion, I would have done it
> if I had thought of it...
Hmm, is it too late to change it for the next version?
> > 3) Support "non-integer blurring". Currently when you
> > use patterned blur certain bands appear because only
> > "integer pixel blurring" is supported, and not the
> > values in between.
>
> I don't understand what you mean here...the color values
> averaged together are float type, not integer. Or do
> you mean non-integer blur amounts?
Yes. You could say the radius, in pixels, of the blur.
> The patch should already do that...
See the code below. The banding is very clear (and not very nice).
#version unofficial MegaPov 0.5;
global_settings {
post_process {
patterned_blur {8, 0, 0, spherical
color_map {[0 rgb 1][1 rgb 0]}
translate <0,0,0> // upper left corner - shows banding
}
}
}
sky_sphere {
pigment {
radial rotate 90*x frequency 32
color_map {[0.5 rgb 0][0.5 rgb 1]}
}
}
// so POV-Ray doesn't complain about no objects in scene:
sphere{-z,.1 pigment{color 0}}
Greetings,
Rune
---
Updated April 25: http://rsj.mobilixnet.dk
Containing 3D images, stereograms, tutorials,
The POV Desktop Theme, 350+ raytracing jokes,
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