Up
Next
jitterbug - jitterbug transformation
jitterbug [options] [cycle_stage]
Create a stage of the jitterbug transformation in OFF format. The
cycles run from 0.0 to 1.0. The fractional part of cycle_stage
is tied to a stage in a full rotation jitterbug. This stage is
measured by the distance travelled by a point moving around a square
which halves a cube of edge 0.25, and which determines the jitterbug
shape.
- cycle_stage
- A number from 0.0 to 1.0 specifying how far through the jitterbug cycle
- -h
- program help
- -f <faces>
- faces to include:
- x - none
- a - all
- e - equilateral triangles (default)
- o - other triangles
- -c <cycle>
- cycle type:
- f - full rotation
- o - alternating between left and_ang(cyc_val) right octahedron stages
- r - rolling between left and right octahedron stages
- i - alternating between left and right icosahedron stages
- -l <size>
- lattice size, nummber of jitterbugs along an edge (default 1)
- -r
- allow lattice reversal by fixing connections between jitterbug neighbours
- -t
- fix an opposing pair of triangles, stopping them from rotating
- -T
- rotate so equilateral triangle is on top (suports -t)
- -o <file>
- write output to file, if this option is not used
the program writes to standard output
Octahedron stage of full jitterbug, include only the equilateral triangles
jitterbug -f e 0.125 > jb_oct.off
Icosahedron stage of icosahedron cycle jitterbug, in 3x3x3 lattice
jitterbug -c i -l 3 0.75 > jb_ico.off
The models are based on R. Buckminster Fuller's
jitterbug transformation.
The equilateral faces are given colour index 1, and the other faces
have colour index 2. The faces can easily be given colour values
using the off_color program. E.g.
jitterbug -c i -l 3 0.75 | off_color -c 2 > jb_ico_col.off
Up:
Programs and Documentation
Next:
poly_weave - weave based on a polyhedron
Antiprism Documentation 21.11.2007 -
http://www.antiprism.com/