Project: Threaded Rod

Open #threaded-rod

const Thread = ({ radius = 1, height = 1, threadHeight = 1, sides = 16 } = {}) => {
  const X = 0;
  const Y = 1;
  const Z = 2;
  const thread =
    lathe({ loops: height / threadHeight, loopOffset: threadHeight, sides },
          Triangle()
            .scale(threadHeight)
            .rotateZ(90)
            .move(0, radius));
  const [min, max] = thread.measureBoundingBox();
  return intersection(Cube.fromCorners([0, min[Y], min[Z]],
                                       [height, max[Y], max[Z]]),
                      thread)
           .rotateY(-90)
           .center();
}

const ThreadedRod = ({ radius = 1, height = 1, threadHeight = 1, sides = 16, play = 0 } = {}) => {
  if (play !== 0) {
    return assemble(ThreadedRod({ radius, height, threadHeight, sides }).drop(),
                    ThreadedRod({ radius: radius - play, height, threadHeight, sides }));
  } else {
    return assemble(Thread({ radius, height, threadHeight, sides }),
                    Cylinder({ radius, height, sides }));
  }
}

assemble(
    Cube(20).as('cube'),
    ThreadedRod({ radius: 5, height: 20, sides: 32 }).as('rod'))
  .withWireframe();