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universe.py
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import svgwrite
import math
## Everything is drawn logarithmically from the origin.
def frange(x, y, jump):
while x < y:
yield x
x += jump
def logg(val):
return math.log(val, 10)
# Draw object at angle R, distance dist
def drawObjectR(dwg, diam, r, dist, diff, text = ""):
rad = (r / 12) * math.pi
drawObjectRad(dwg, diam, rad, dist, diff, text)
# Draw object at angel rad and distance dist
def drawObjectRad(dwg, diam, rad, dist, diff, text = ""):
yy = dist * math.cos(rad)
xx = dist * math.sin(rad)
drawObject(dwg, diam, xx, yy, diff, text)
def drawLineR(dwg, rad, dist):
yy = dist * math.cos(rad)
xx = dist * math.sin(rad)
drawLine(dwg, 1, 1, xx, yy)
def drawLine(dwg, x, y, x2, y2):
if (x != 0 or y != 0):
dist=logg(math.sqrt((x*x) + (y*y)))
if (y == 0):
rr = math.pi / 2
else:
rr = math.atan2(x, y)
xx1 = dist*math.sin(rr)
yy1 = dist*math.cos(rr)
else:
xx1 = 0
yy1 = 0
dist2=logg(math.sqrt((x2*x2) + (y2*y2)))
if (y == 0):
rr2 = math.pi / 2
else:
rr2 = math.atan2(x2, y2)
xx2 = dist2*math.sin(rr2)
yy2 = dist2*math.cos(rr2)
dwg.add(dwg.line((cx+round(scal*xx1), cy+round(scal*yy1)), (cx+round(scal*xx2), cy+round(scal*yy2)), stroke=svgwrite.rgb(10, 10, 16, '%')))
# Draws an object att coordinates xpos, ypos
def drawObject(dwg, diam, xpos, ypos, diff, text = ""):
x=xpos + diam*math.cos(0)
y=ypos + diam*math.sin(0)
dist=logg(math.sqrt((x*x) + (y*y)))
if (y == 0):
rr = math.pi / 2
else:
rr = math.atan2(x, y)
xx1 = dist*math.sin(rr)
yy1 = dist*math.cos(rr)
poly = []
poly.append((cx+round(scal*xx1), cy+round(scal*yy1)))
for r in frange(0.0, 6.4, diff):
x=xpos + diam*math.cos(r)
y=ypos + diam*math.sin(r)
dist=logg(math.sqrt((x*x) + (y*y)))
if (y == 0):
rr = math.pi / 2
else:
rr = math.atan2(x, y)
xx = dist*math.sin(rr)
yy = dist*math.cos(rr)
poly.append((cx+round(scal*xx), cy+round(scal*yy)))
xx1=xx
yy1=yy
dwg.add(dwg.polygon(poly,stroke='black', fill='none'))
if (not text == ""):
dwg.add(dwg.text(text, insert=(cx+round(scal*xx)+5, cy+round(scal*yy)), fill='black'))
cx = 600
cy = 420
scal = 18
dwg = svgwrite.Drawing('test2.svg', profile='tiny')
# Light year in kilometers
kmperly = 9460730472580
# Megaparsek in kilometers
mpc = 3260000 * kmperly
drawLineR(dwg, 0, 152098232)
drawLineR(dwg, 0.1, kmperly*10)
drawLineR(dwg, 0.3, kmperly*1000)
drawLineR(dwg, 0.5, kmperly*100000)
drawLineR(dwg, 0.7, mpc)
drawLineR(dwg, 0.9, 100*mpc)
drawObject(dwg, 6371, 0, 6371, 0.01, "Earth")
drawObject(dwg, 6471, 0, 6371, 0.01)
drawObject(dwg, 100, 0, 6371, 0.01)
# Moon
drawObject(dwg, 1737*2, 0, -384399, 1, "Moon")
# Sun
drawObject(dwg, 1396840, 0, -152098232, 1, "Sun")
#drawObjectRad(dwg, 1396840, 2, 152098232, 1)
#drawObjectRad(dwg, 1396840, 3, 152098232, 1)
# orbit of Neptune
drawObject(dwg, 4503000000, 0, 152098232, 0.01, "Neptune Orbit")
drawObject(dwg, 249209300, 0, -152098232, 0.01, "Mars Orbit")
drawObject(dwg, 107477000, 0, -152098232, 0.01, "Venus Orbit")
drawObject(dwg, 69816900, 0, -152098232, 0.01, "Mercury Orbit")
# moon orbit
#drawObject(dwg, 384399, 0, 0, 0.1)
# Alpha Centauri / Proxima
drawObjectR(dwg, 224219312200, 14.55, 41305549243284, 0.1, "A Centauri")
drawObjectR(dwg, 224219312200, 17.9, 5.9630 * kmperly, 0.1, "Barnard's Star")
drawObjectR(dwg, 224219312200, 10.9, 7.7825 * kmperly, 0.1, "Wolf 359")
drawObjectR(dwg, 224219312200, 6.5, 8.5828 * kmperly, 0.1, "Sirius")
drawObjectR(dwg, 224219312200, 3.5, 10.522 * kmperly, 0.1, "Epsilon Eridani")
drawObjectR(dwg, 224219312200, 7.5, 11.402 * kmperly, 0.1, "Procyon")
drawObjectR(dwg, 224219312200, 22, 11.824 * kmperly, 0.1, "Epsilon Indi")
drawObjectR(dwg, 224219312200, 1.75, 11.887 * kmperly, 0.1, "Tau Ceti")
drawObjectR(dwg, 224219312200, 14.25, 36.7 * kmperly, 0.1 ,"Arcturus")
drawObjectR(dwg, 2242193122000, 6.47, 310 * kmperly, 0.1, "Canopus")
drawObjectR(dwg, 2242193122000, 18.55, 25 * kmperly, 0.1, "Vega")
drawObjectR(dwg, 224219312200, 5.25, 42.2 * kmperly, 0.1, "Capella")
drawObjectR(dwg, 2242193122000, 5.25, 860 * kmperly, 0.1, "Rigel")
drawObjectR(dwg, 2242193122000, 5.9, 643 * kmperly, 0.1, "Betelgeuse")
drawObjectR(dwg, 2242193122000, 1.5, 139 * kmperly, 0.1, "Achenar")
drawObjectR(dwg, 224219312200, 19.9, 16.73 * kmperly, 0.1, "Altair")
drawObjectR(dwg, 2242193122000, 4.5, 65 * kmperly, 0.1, "Aldebaran")
# Milky Way
drawObjectR(dwg, 5.20E+15, 17.75, 2.57E+17, 0.01, "Milky Way Centre")
drawObjectR(dwg, 5.20E+17, 17.75, 2.57E+17, 0.1, "Milky Way")
# Andromeda
drawObjectR(dwg, 1.32E+18, 0.6, 2.37E+19, 0.1,"Andromeda")
# Triangulum
drawObjectR(dwg, 50000 * kmperly, 1.6, 3000000*kmperly, 0.1, "Triangulum")
drawObjectR(dwg, 14000* kmperly, 5.4, 163000*kmperly, 0.1, "Greater Magellan")
drawObjectR(dwg, 7000* kmperly, 0.7, 200000*kmperly, 0.1, "Lesser Magellan")
drawObjectR(dwg, 6 * mpc, 12.7, 92 * mpc, 0.1, "Coma Supercluster")
drawObjectR(dwg, 15000000 * kmperly, 3.3, 73.6 * mpc, 0.1, "Perseus Cluster")
drawObjectR(dwg, 30 * mpc, 3.3, 185000000 * kmperly, 0.1, "Taurus Void")
# Bootes Void
drawObjectR(dwg, 2.37E+21, 14.8, 6.62E+21, 0.01, "Bootes Void")
#drawObjectR(dwg, 52 * mpc, 15, 61*mpc, 0.01, "Norhtern Local Void")
#drawObjectR(dwg, 56 * mpc, 15, 96*mpc, 0.01, "Southern Local Void")
drawObjectR(dwg, 550 * mpc, 3.25, 8000000000* kmperly, 0.01, "Eridanus Supervoid")
# Observable Universe
drawObject(dwg, 4.35E+23, 0, 0, 0.01, "Observable Universe")
# Local Void
drawObjectR(dwg, 22.5*mpc, 18.6, 23*mpc , 0.01, "Local Void")
# Virgo cluster
drawObjectR(dwg, 2.2*mpc, 12.5, 53800000*kmperly, 0.01, "Virgo cluster")
# Virgo Supercluster
#drawObject(dwg, 7175593*kmperly, 53800000*kmperly, 0, 0.01)
# Sloan Great Wall
#drawObject(dwg, 900000000*kmperly, 1000000000*kmperly, 0, 0.01 ,"Sloan Great Wall")
#Hercules-Corona Borealis Great Wall
#drawObject(dwg, 7300000000*kmperly, 0, 10000000000*kmperly, 0.01, "Hercules-Corona Borealis Great Wall")
#CfA2 Great Wall
#drawObject(dwg, 500000000*kmperly, 0, 200000000*kmperly, 0.01, "CfA2 Great Wall")
dwg.save()
print("done")