"Scott" <spa### [at] spamcom> wrote:
> Stefan Viljoen <spamnot@<removethis>polard.com> wrote:
> > You say you didn't give lots of attention to the detail or textures, but the
> > road sure looks realistic - the closeup part of it to the camera. Looks
> > almost exactly like the real thing at high speed - how did you do it?
>
> It does look good, and presumably that effect is because the camera is
> moving at high speed to keep the image of the car sharp.  But if this is
> the case, the other parts of the track should be blurred too, like those
> hemispherical markers...

No, nothing is moving, it's just squeezing and stretching of a simple
pattern, like this:

pigment {
  granite
  color_map {
   [0 color rgb <1,1,1> *0.4 ]
   [1 color rgb <1,1,1> *0.7 ]
  }
  scale <300,3,300>
}

The racetrack is just a difference of a cylinder and a cone, some 5000 units
radius. The effect is somewhat exaggerated by the camera position and
angle.

H

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