NUM_HAIRS = 200
LAYER_HEIGHT = 0.3
DIAMETER = 80
NUM_SIDES = 5
LAYERS = 200
dtheta = 2 * math.pi / NUM_HAIRS
dx = DIAMETER * math.sin(dtheta / 2)
t = ExtruderTurtle()
## Set up the turtle
t.name("flex-circle.gcode")
t.setup(x=100, y=100)
t.rate(FEEDRATE)
t.set_density(EXT_DENSITY)
for l in range(LAYERS):
for k in range(NUM_HAIRS):
t.right(dtheta)
t.forward(dx)
t.left(HAIR_ANGLE)
t.forward(HAIRLENGTH)
t.dwell(50)
t.forward(-2 * HAIRLENGTH)
t.dwell(50)
t.forward(HAIRLENGTH)
t.right(HAIR_ANGLE)
## Move to the next layer
t.lift(LAYER_HEIGHT)
from extruder_turtle import ExtruderTurtle
import math
## Parameters for the spiral
N = 40 ## Number of subdivisions of one round-trip
radius = 20 ## Outer radius of the spiral
dtheta = 2 * math.pi / N ## Change in heading after each step
dx = radius * dtheta ## Forward movement during each step
dr = -0.5 / N ## Change in radius with each step
t = ExtruderTurtle()
t.name("alien-tree.gcode")
t.setup(x=100, y=100)
t.set_density(0.07) # 0.05
t.rate(500)
while radius > 0:
t.forward(dx)
t.right(dtheta)
radius += dr
dx = radius * dtheta
for l in range(50):
t.extrude(0.1)
t.dwell(100)
t.lift(0.05) # 0.1
for x in range(60):
for l in range(10):
t.extrude(0.1)
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
t.name("euler-spiral.gcode")
t.setup(x=100, y=100)
t.rate(700)
t.set_density(0.5)
length = 0
dl = 5
for i in range(200):
length += dl
t.move(dl)
t.right(2 * math.pi * length * dl / 10)
dl = 5 / length
t.finish()
## Parameters for vase and rim oscillations
N = 100
RADIUS = 20
PERIODS = 3
AMPLITUDE = 6
LAYERS = 200
dtheta = 2 * math.pi / N
dx = RADIUS * dtheta
radius = RADIUS
t = ExtruderTurtle()
## Set up the turtle
t.name("nonplanar-vase.gcode")
t.setup(x=100, y=100)
t.set_density(0.05)
t.rate(500)
## Draw a spiral base
dr = 0.5 / 60
base_rad = 0
base_dx = 0
while base_rad < RADIUS:
t.forward(base_dx)
t.right(2 * math.pi / 60)
base_rad += dr
base_dx = base_rad * 2 * math.pi / 60
## First few layers "bulding up" the oscillations
for l in range(20):
prop = l / 20
## 2 is a primitive root modulo N
DIAMETER = 50
dtheta = 2*math.pi/N
dx = DIAMETER*math.sin(dtheta/2)
n = 1
t = ExtruderTurtle()
## Set up the turtle
t.name("not-a-cardioid.gcode")
t.setup(x=100, y=100)
t.rate(700)
for l in range(50):
## Draw a circle
t.set_density(0.07)
t.left(dtheta/2)
for k in range(N):
t.right(dtheta)
t.move(dx)
t.right(dtheta/2)
## Draw several chords
for i in range(10):
t.dwell(100)
t.set_density(0.03)
angle = n*dtheta/2
t.right(angle)
t.move(DIAMETER*math.sin(angle))
t.right(angle)
## Point n is joined by a line segment to point 2n
from extruder_turtle import ExtruderTurtle
import math
import random
t = ExtruderTurtle()
t.name("random-cone.gcode")
t.setup(x=100, y=100)
t.rate(700)
t.set_density(0.02)
for l in range(80 * 7):
t.forward(20 - l * 20 / (80 * 7))
t.right(2 * math.pi / 7 + math.pi * random.random() / 500)
t.lift(0.3 / 7)
t.lift(1)
t.extrude(0.8)
t.lift(-1)
t.dwell(200)
t.finish()
from extruder_turtle import ExtruderTurtle
import math
## Parameters for the spiral
N = 40 ## Number of subdivisions of one round-trip
radius = 20 ## Outer radius of the spiral
dtheta = 2 * math.pi / N ## Change in heading after each step
dx = radius * dtheta ## Forward movement during each step
dr = -0.5 / N ## Change in radius with each step
t = ExtruderTurtle()
t.name("palm-tree.gcode")
t.setup(x=100, y=100)
t.set_density(0.06) # 0.05
t.rate(500)
while radius > 0:
t.forward(dx)
t.right(dtheta)
radius += dr
dx = radius * dtheta
for l in range(50):
t.extrude(0.1)
t.dwell(100)
t.lift(0.1) # 0.1, 0.05
for x in range(60):
prog = x / 60
frond_length = prog**4 * 20
from extruder_turtle import ExtruderTurtle
import math
import random
t = ExtruderTurtle()
t.name("random-hourglass.gcode")
t.setup(x=100, y=100)
t.rate(500)
t.set_density(0.04)
for l in range(240 * 7):
t.forward(10 * math.sqrt(12 * (l / (240 * 7) - 1 / 2)**2 + 1))
t.right(2 * math.pi / 7 + math.pi * random.random() / 500)
t.lift(0.2 / 7)
t.lift(1)
t.extrude(0.4)
t.lift(-1)
t.dwell(200)
t.finish()
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
## Set up the turtle
t.name("tall-bumpy-star.gcode")
t.setup(x=100, y=100)
t.rate(1000)
t.set_density(0.2)
t.lift(2)
for l in range(50):
## Draw a seven-pointed star
for k in range(7):
t.forward(50)
t.right(6 * math.pi / 7)
## Move to the next layer
t.lift(0.6) # 0.5 gets too squished
# 1 gets too bumpy
## Save to a GCODE file
t.finish()
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
## Set up the turtle
t.name("bumpy-star.gcode")
t.setup(x=100, y=100)
t.rate(700)
t.set_density(0.3)
t.lift(1)
for l in range(9): # height of 10.5
## Draw a seven-pointed star
for k in range(7):
t.forward(50)
t.right(6 * math.pi / 7)
## Move to the next layer
t.lift(
1.2
) # 0.7 for first demo, 0.6 for second demo, 0.9 for third demo, 1.2 for fourth demo
# 0.5 gets too squished
# 1 gets too bumpy
## Save to a GCODE file
t.finish()
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
t.name("square-string-art.gcode")
t.setup(x=100, y=100)
t.rate(500)
t.set_density(0.06)
for l in range(50):
x = 5 * (l % 10)
y = 5 * (l % 10)
theta = math.atan(y / (50 - x))
r = math.sqrt((50 - x)**2 + y**2)
for i in range(3):
t.forward(50)
t.left(math.pi / 2)
t.forward(50)
t.left(math.pi * 3 / 4)
t.forward(50 * math.sqrt(2))
t.left(math.pi * 3 / 4)
t.lift(0.3)
t.lift(-0.2)
t.set_density(0.03)
t.forward(x)
t.left(theta)
t.forward(r)
t.forward(-r)
t.right(theta)
t.forward(-x)
