Download or view paintAlongHullTest.frink in plain text format
/** This program tests the VoxelArray.paintAlong hull method for 3D printing.
This expands or contracts an object by moving a tool around its hull. This
is sometimes called the Minkowski sum operation in some modeling packages.
*/
sides = 7
angle = 90 deg // Point at top
outerRadius = .5 in
res = 254/in
polygon = callJava["frink.graphics.Point2DFloatList", "makeRegularPolygon", [sides, outerRadius res, angle]]
v = callJava["frink.graphics.VoxelArray", "extrudeZTapered", [polygon, 0 in res, 1 in res, 1, .5]]
// Double-cone tool
th = .1 in
tr = .1 in
t1 = callJava["frink.graphics.VoxelArray", "makeTaperedCylinder", [0,0,0,0,0,th res, tr res, 0]]
t2 = callJava["frink.graphics.VoxelArray", "makeTaperedCylinder", [0,0,0,0,0,-th res, tr res, 0]]
doubleConeTool = t1.union[t2]
// Spherical tool
sphereTool = callJava["frink.graphics.VoxelArray", "makeSphere", [.1 in res]]
// Double-cone with flat sides tool
th = .1 in
tr = .1 in
flatHeight = .1 in
t1 = callJava["frink.graphics.VoxelArray", "makeTaperedCylinder", [0,0,flatHeight/2 res,0,0,(th+flatHeight/2) res, tr res, 0]]
t2 = callJava["frink.graphics.VoxelArray", "makeTaperedCylinder", [0,0,-flatHeight/2 res,0,0,-(th + flatHeight/2) res, tr res, 0]]
flat = callJava["frink.graphics.VoxelArray", "makeCylinder", [0,0,flatHeight/2 res,0,0,-flatHeight/2 res, tr res]]
doubleConeWithFlatSidesTool = t1.union[t2].union[flat]
v = v.paintAlongHull[sphereTool, 0,0,0, true]
v.projectX[undef].show["X"]
v.projectY[undef].show["Y"]
v.projectZ[undef].show["Z"]
filename = "paintAlongHullTest.obj"
print["Writing $filename..."]
w = new Writer[filename]
w.println[v.toObjFormat["hull", 1/(res mm)]]
w.close[]
println["done."]
Download or view paintAlongHullTest.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 19967 days, 5 hours, 8 minutes ago.