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Mike Horvath <mik### [at] gmailcom> wrote:
> http://wiki.povray.org/content/Reference:Camera#Focal_Blur
>
> How can a plane be parallel to the camera? Can't a plane only be
> perpendicular to a vector?
>
> Also, I don't understand why a plane is used at all. All points
> equidistant from focal_point should form a sphere, don't they?
Probably parallel in the view sense, every plane forward of the camera view
would be considered parallel.
Someone else would need to answer that second part, but I think the way it works
is to simply use a flat plane like orthographic projection does. Maybe... maybe
not.
I looked at your SDL and the new screen.inc (I renamed mine here screen2.inc to
not mix it up with the old one).
Found that by using aperture 0.01 to focus the blurring while testing, and using
the camera location instead of <0,0,0> I could get a look at the text again by
adding a little z to it.
Of course, it blurs away immediately after clock increases away from 0.
focal_point CameraLocation+z*0.4
If 0.3 or 0.5 is used the text blurs out, so obviously there's a very narrow
focus area.
I don't know if you will be able to discover a method to keep the text at the
focal plane but seems like it shouldn't be impossible either.
Bob
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