thehans

$fs=0.2;
$fa=0.2;

headNum = 2;

phillipsDrive(headNum);
//phillipsDemo(headNum);

module phillipsDemo(num) {
  difference() {

thehans

// LSD Radix sort (stable)
//   base: should be a power of two, otherwise exit condition (d==m) might not be reached.
//   key: 3 possible types
//      - number (vector index into each element) 
//      - function (takes element and returns the key value)
//      - undef (elements are used directly as the key)
//     key values need not be integers, but will be treated as integers via floor()
//     e.g. [1.5, 1, 1.2] is considered sorted since they are all same key after floor
function radix_sort(v,base=4,key) = key==undef ?
  _rs(v,1,pow(base,-floor(log(max(v))/log(base))),base) : 

thehans

n = 8;
height = 40;

width = 50; // distance across flats of polygon (when n is even)
rxy = 8;
rz = 3;
width2 = 30; 
rxy2 = rxy*width2/width;
rz2 = 0.1; // small but nonzero

thehans

$fs=0.5; 
$fa=1;

// example usage
chamfer_extrude(height=10,ch1=-3,ch2=3) {
  hull() { 
    translate([-10,0]) circle(5, $fn=64);
    translate([10,0]) circle(5, $fn=64);
  }
  square([10,30],center=true);

thehans

// Demo of using complex numbers to map one 2D point to another.
// Performs rotate and/or scale transform in one operation, without any 
// transcendental (trigonometric) functions nor irrational numbers*.
//   *please ignore the circular input data

// Enable animation for demo!

// multiply complex numbers
function cmul(c1,c2) = let(a=c1[0],b=c1[1],c=c2[0],d=c2[1])
  [a*c-b*d, a*d+b*c];

thehans

// Pipe library demonstrating a concept of chained operations

$fn = 72; // define exact number of fragments in curves
// using $fs instead would cause some mismatched # of edges during tapers
echo(str("For best results, all angles should be multiples of ", 360/$fn, " degrees"));

in = 25.4;

// Example of how to use pipe
// Note that all calls are chained (there's only one semicolon, at the end)

thehans

# If the design does not create a "sync" clock domain, it is created by the nMigen build system
# using the platform default clock (and default reset, if any).

from nmigen import *
from nmigen_boards.de10_nano import *


class Blinky(Elaboratable):
    def elaborate(self, platform):
        leds = Array(platform.request("led", i) for i in range(0,8))

thehans

module rotate_about(a, v, p=[0,0,0]) {
     translate(p) rotate(a,v) translate(-p) children();
}

// example usage
rotate_about([0,45,0],p=[5,0,10]) 
  cylinder(r=5,h=10);

thehans

$fs=0.5; 
$fa=1;

// example usage
fillet_extrude(height=10,r1=3,r2=-3) {
  hull() { 
    translate([-10,0]) circle(5);
    translate([10,0]) circle(5);
  }
  rotate(90) hull() { 

thehans

module rotate_extrude3D(clearance, bounds=[1000,1000]) {
  rotate_extrude()
    intersection() { // clip to positive x axis before rotate_extrude
      translate([0,-bounds[1]/2]) square(bounds);
      offset(delta=clearance) // add clearance to profile
        union() for(a=[-90:$fa:90]) // union projections from multiple angles
          projection() rotate([-90,a]) children();
    }
}