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Since MegaPOV 0.4 includes my blob pattern, it is quite simple to make
blobs using isosurfaces. Of course, they are currently limited to
cylinders and spheres, but I am still planning to add additional types
of components, and the "blobs" used in the pattern are a bit more
flexible than standard ones. Also, you can use turbulence or other warps
more easily than you could if you make the blob out of functions. And it
might be a little faster, I haven't checked.
My object and proximity patterns are also included in this version, the
object pattern doesn't work very well in isosurfaces(because of the
sharp boundary between it's two values instead of a smoothly changing
value, it is harder to find the intersection point) and I haven't even
tried the proximity pattern with isosurfaces yet.
Here is the code for this isosurface:
#declare DensityFunc = 0;
#declare falloffAmt = 3;
#declare TestFunction =
function {
pigment {
blob {
cylinder {<3, 2.4, 0>, < -3, 2.4, 0>, 1.0, 1
density_function DensityFunc,falloffAmt
}
cylinder {<3, 2.4, 0>, < -3, 2.4, 0>, 1.0, 1
rotate z*1*120
density_function DensityFunc,falloffAmt
}
cylinder {<3, 2.4, 0>, < -3, 2.4, 0>, 1.0, 1
rotate z*2*120
density_function DensityFunc,falloffAmt
}
sphere {< 0, 0, 0>, 2.75, 1
density_function DensityFunc, falloffAmt
}
threshold 1
max_density 0
}
ramp_wave
color_map {
[0 color Black]
[1 color White]
}
warp {turbulence 0.2}
scale 0.25
}
}
isosurface {
normal on
function {
TestFunction(x, y, z)
}
accuracy 0.01
threshold 0.1
contained_by {box {<-1.5, -1.5, -1>, <1.5, 1.5, 1>}}
open
eval
texture {
pigment {color White}
finish {brilliance 3}
}
translate y*1.2
}
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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Attachments:
Download 'blob isosurface.jpg' (22 KB)
Preview of image 'blob isosurface.jpg'
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>Of course, they are currently limited to
>cylinders and spheres, but I am still planning to add additional types
>of components, and the "blobs" used in the pattern are a bit more
>flexible than standard ones. Also, you can use turbulence or other warps
>more easily than you could if you make the blob out of functions. And it
>might be a little faster, I haven't checked.
Isoblobs are already in MegaPOV...
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