• Maxon Cinema 4D

  Convert Latitude and Longitude to point in 3D space

  Posted by Mio Tanaka on June 10, 2013 at 5:09 am

  Hi,

  I’d like to do a pin-dropping animation around a sphere object representing the globe and there’ll be more than 100 pins which are above certain cities and I’d rather not place them manually. Then I found this function to convert latitude and longitude to a point in C4D.

  https://stackoverflow.com/questions/10473852/convert-latitude-and-longitude-to-point-in-3d-space

  def llarToWorld(lat, lon, alt, rad):
# see: https://www.mathworks.de/help/toolbox/aeroblks/llatoecefposition.html
f = 0 # flattening
ls = atan((1 - f)**2 * tan(lat)) # lambda

  x = rad * cos(ls) * cos(lon) + alt * cos(lat) * cos(lon)
  y = rad * cos(ls) * sin(lon) + alt * cos(lat) * sin(lon)
  z = rad * sin(ls) + alt * sin(lat)

  return c4d.Vector(x, y, z)

  But since this is just a function and I don’t know anything about Python and I don’t know how to make it work, I’m at a loss at the moment. Can somebody explain how to apply this function to a dropping pin object?

  Thank you,

  Mio Tanaka replied 12 years, 11 months ago 1 Member · 0 Replies
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