Download or view supertoroidTest.frink in plain text format
/** This tests supertoroid generation in Frink's 3D routines (notably
frink.graphics.VoxelArray.makeSupertoroid )
and was used to fix the bounding box calculation problem when rx != ry
It now calculates a correct minimal bounding box for all cases.
Frink's 3-D routines:
https://frinklang.org/3d/ (especially the VoxelArray class)
For more information on supertoroids, see:
https://cse.buffalo.edu/~jryde/cse673/files/superquadrics.pdf for the equation
http://paulbourke.net/geometry/toroidal/ for graphs of the equation families.
*/
res = 254/in
r = 100 // Radius of large ring
rx = 10 // Radius of small ring in x direction
ry = 20 // Radius of small ring in y direction
rz = 45 // Radius of small ring in z direction
// Eccentricities of the large and small ring.
// (1=circle, 2=diamond, less than 1 is puffy rounded square, greater than 2
// is a pinched diamond. See links above for examples. )
eLarge = 1 // Eccentricity of large ring
eSmall = 1 // Eccentricity of small ring.
outer = callJava["frink.graphics.VoxelArray", "makeSupertoroid", [r, rx, ry, rz, eSmall, eLarge]]
outer.projectX[undef].show["X"]
outer.projectY[undef].show["Y"]
outer.projectZ[undef].show["Z"]
filename = "supertoroid.obj"
print["Writing $filename..."]
w = new Writer[filename]
w.println[outer.toObjFormat["supertoroid", 1/(res mm)]]
w.close[]
println["done."]
Download or view supertoroidTest.frink in plain text format
This is a program written in the programming language Frink.
For more information, view the Frink
Documentation or see More Sample Frink Programs.
Alan Eliasen was born 20108 days, 1 hours, 21 minutes ago.