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, 12 hours, 44 minutes ago.