Raphael Cheat Sheet
Full Reference

x    # x position
y    # x position
r    # radius
w    # width
h    # height
rx   # ellipse x-axis
ry   # ellipse y-axis


# objects

circle(x,y,r)

rect(x, y, w, h, r)

ellipse(x, y, rx, ry)

image(url, x, y, w, h)

text(x, y, str)


# examples (run these in the blue console)

circle(200,200,30).fill('darkorange')

rect(300,200,30,120,5).fill('azure')

ellipse(400, 120, 30, 90).fill('olivedrab')

text(100,100,'hi earth').attr
  'font-size': 14
  'fill': 'tomato'

# paths - use svg path string format
path("M10 10L90 90")

# sets
st = set()
st.push circle(30,50,10).fill('blue')
st.push circle(50,90,10).fill('red')
st.translate(50,50)
  

Color

# 12 colored bars
a = []
for i in [1..12]
  a[i] = rect 40, 40*i, 200, 10
  a[i].fill getColor()
  

Icons

# Display all iconts
i = 0
for key, value of icon
  text(i, 200, key).stroke 'aliceblue'
  path(value).translate(i, 230).stroke 'aliceblue'
  i += 40
  

CoffeeScript Cheat Sheet
Full Reference

# assignment
x = 4

# functions
mult = (a,b) -> a*b

# arrays
list = [1,2,3,4,5]

# objects
sh =
circ: (x,y) -> circle(x,y,15)
sq: (x,y) -> rect(x,y,15,15)

# new square at 75, 125
sh.sq(75,125)

# array comprehensions
circles = (sh.circ(25*x,200) for x in [1..10])
  

Math

sin pi/6  # 0.49999 ~ 1/2
acos 1/2  # 1.04719 ~ pi/3
random()  # generate random number, 0-1
abs -5    # 5
pow(x,3)  # x^3
floor 4.5 # 4
ceil 5.2  # 6
  

Connect Shapes
Original

# create a shape
shape(x, y, width, height)
link(int, int)

# Example: Create three shapes.
# Link 0 to 1, and 1 to 2
shape 50, 50, 10, 10 
shape 200, 150, 40, 40 
shape 400, 50, 30, 30 
link 0, 1 
link 1, 2 

# Classy, takes an object and creates
# a graphical interface for its properties
classy(name, object, options)

# Example: Classy
classy 'My Object',
  f: (x) -> 2*x
  n: 5
  str: "the quick brown fox"
  nan: NaN
  blah: {car: 'buggy', horn: 'french'}
  huh: [4,5,'pop','bug']
  elem: $('body')[0]
  null: null