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| You'd probably want to keep the world size within 65000 pixels in each dimension. Some third party plugins, including particular and optical flares, limit you to maximum values of +/- 32768. -Chris -----Original Message----- From: Dan Ebberts [mailto:debberts@comcast.net] Sent: Wednesday, May 16, 2012 02:42 PM To: 'After Effects Mail List' Subject: Re: [AE] Astronomical positioning in AE (script?) What form is the data in now? The script could certainly do the conversion from right ascension , declination and distance. Then I think all you need is to pick a scale factor for the distance to fit everything into a AE-sized world. How much data is there? Dan From: Stephen van Vuuren Sent: Tuesday, May 15, 2012 9:01 PM To: After Effects Mail List Subject: Re: [AE] Astronomical positioning in AE (script?) Phil, Not in a huge rush and that would certainly get you listed in the film’s credits – thanks so much for the offer. Let me work on the Excel side of things (not that I’m genius there either but it should be possible) to get it sorted out. I am wondering about the multiplier – wonder if it needs to be truly logarithmic giving the size of the universe. The observable universe is 46 billion light years across, the average galaxy (e.g. ours) is 100,000 light years, that’s a ratio of 460,000 : 1. Any idea of maximum XYZ values in AE? stephen van vuuren 336.202.4777 http://www.sv2dcp.com/ http://www.sv2studios.com/ http://www.outsideinthemovie.com/ A film is – or should be – more like music than like fiction. It should be a progression of moods and feelings. The theme, what’s behind the emotion, the meaning, all that comes later. –Stanley Kubrick From: After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf Of Phil Spitler Sent: Tuesday, May 15, 2012 11:43 PM To: After Effects Mail List Subject: Re: [AE] Astronomical positioning in AE (script?) If you can get the data into a spreadsheet into X,Y,Z columns, it would be easy enough to have a script read each row of x,y,z and apply that to the position of a layer. I have done a similar thing taking camera data from a motion control rig into AE. If you are not in a huge rush, I could write the script for you once you give me a sample of the data. You will probably need some kind of multiplier in there to make the values fit within you AE world. Phil Phil Spitler | Associate Creative Director | Bonfire Labs | t : 415.394.8200 | c : 415.571.3139 | Bonfirelabs.com On May 15, 2012, at 8:21 PM, Stephen van Vuuren wrote: I’m working on the Big Bang section of the film. A local community college is researching celestial objects that have been imaged. They provide two pieces of data – the spherical position via a value for right ascension & declination. And a distance in megaparsecs. I need to convert this into a manageable form in AE. Obviously, some kind of compensation for I found this on converting to XYZ – but the how to create the math to work in AE, I’m not sure what is the best way: http://fmwriters.com/Visionback/Issue14/wbputtingstars.htm I don’t know if this should be setup in Excel and then exported into AE, or some kind of script built – which is probably beyond my admittedly poor scripting skills. Thoughts? stephen van vuuren 336.202.4777 http://www.sv2dcp.com/ http://www.sv2studios.com/ http://www.outsideinthemovie.com/ A film is – or should be – more like music than like fiction. It should be a progression of moods and feelings. The theme, what’s behind the emotion, the meaning, all that comes later. –Stanley Kubrick |
