spirals
do you want an archimedean lollipop
or an logarithmic one ?
with this plugin you can create spirals with different
shapes, sizes or colors
there are two spiral modes:
- archim.
this mode creates an Archimedean spiral with an equal distance between two windings
- log
this mode creates a logarithmic spiral with an increasing distance between the windings
(for more information about spirals please consult a mathematical encyclopedia)
the parameters of the plugin:
- no
with this parameter you can determine how much spirals come out of the origin
values between 1 and 24 are allowed
- windings
with this parameter you can adjust how much windings the spiral(s) have
- width
you can adjust how the ratio between the spiral and the room in between with this parameter:
- 0 means there will be no spiral at all
- 0.5 creates an spiral with an symmetric spiral/room ratio
- 1 means the spiral touches itself
- size
the x- and y-coordinates are multiplied by this value before doing the calculations;
a larger value results in seeing more of the spiral
- rotation
the spiral is rotated clockwise by this value
- noise
if this parameter is non-zero (larger than 0.001 to be exactly) it
will cause a distortion of the spirals
- value mode
there are different ways to determine the texture value for a point:
- 0 points inside the spiral gets the value 1.
- 1 the value is linear increasing from 0. to 1.
- 2 the value is linear increasing from 0. to 0.5 and then decreasing to 0.
- 3 same as before but with an quadratic increasing/decreasing
- 4-7 the behavior is similar to 0-3 but different spirals gets different
values or value intervalls
- no aalias
with this option you can disable
anti-aliasing for this texture even if it was enabled in the render
window (it is useful if you use colorbands to avoid artefact effects)
- ani speed
you can animate this texture by setting this parameter to a value different from 0;
the spiral will be rotated ani speed degrees every frame
- bump
you can turn bump mapping on with this button
- bump size
you can adjust the bump mapping effect with this parameter
examples
here you see a few example pics:
these pictures are created with the
bump mapping feature
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download
here you can get the C-source and a precompiled version for a linux i386 libc6 and
a IRIX system as a gzipped-tar-file:
the spirals plugin
if you've any enhancements, corrections, questions or comments to any of my
plugins please let me know
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