/** This makes a Lord of the Rings ring for 3-D printing. */

res = 254/inch

r = 2 inch
h = r/2
rx = .2 r
ry = rx
rz = .4 r

// Get this file from:
// https://upload.wikimedia.org/wikipedia/commons/thumb/2/23/One_Ring_inscription.svg/1024px-One_Ring_inscription.svg.png
// or a different resolution from
// https://commons.wikimedia.org/wiki/File:One_Ring_inscription.svg
img = new image["file:One_Ring_1024x288.png"]

v = callJava["frink.graphics.VoxelArray", "makeSupertoroid", [r res, rx res, ry res, rz res, 1, 1]]

// 2-pixel cube tool for testing
pixelTool = newJava["frink.graphics.VoxelArray", [0,2,0,2,0,2,true]]

emboss = v.cylindricalEmboss[img, 0,0,0, 0 deg, 360 deg, 2 rz res, -.0 cm res, 2 mm res, pixelTool, 0, 0, 0]

v.remove[emboss]

v.projectX[undef].show["X"]
v.projectY[undef].show["Y"]
v.projectZ[undef].show["Z"]

filename = "OneRingEmboss.obj"
print["Writing $filename..."]
w = new Writer[filename]
w.println[v.toObjFormat["v", 1/(res mm)]]
w.close[]
println["done."]