How to make a Hole in the Water - Whirlpool
This shows how to do this by simple CSG.
At last we have to put a texture with an according "normal" component
on the plane to simulate the wirling of the water.
For making it easier to see what happens a quater of the plane is cut off.
Hole in the water:
Description of this scene for POV-Ray: .pov file
or .txt file |
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We take a xz plane (plane{<0,1,0>,0} and a cylinder as deep as we want our hole to be.
The upper end must be a little bit higher than the plane to avoid coincident surfaces in difference.
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We subtract this cylinder from our plane.
We've got a hole with a sharp edge.
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To get a round edge we have to take another cylinder of the
radius of our first cylinder plus the edge radius which we want.
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Once again we subtract it!
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Now we add a torus with
the major radius = radius of our second cylinder
and the minor radius = our edge radius.
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This is all we need for a hole with a rounded edge.
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At last we have to add to our water texture
a normal like this:
normal {spiral1 20 0.25
sine_wave
turbulence 0.1
rotate<90,0,0>
scale 0.5 } |
That's it!
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part
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4 | 5 | 6 |
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