| about 3-Dimensional animation [message #30597] |
Tue, 07 May 2002 04:25  |
hyjeong
Messages: 2
Registered: May 2002
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Junior Member |
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I want to make 3-dim animation which deal with climatology data with idl.
I found the example in noaa homepage.
But i don't want to get fantastic results yet because i am beginner
I want to get the advice about 3-d plot and 3-d animation from you
I don't know how must I start about it .
I want a good example...
is it possible to realize 3-dim animaion with idl ?
I want to look fantastic output
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| Re: about 3-Dimensional animation [message #30708 is a reply to message #30597] |
Wed, 08 May 2002 16:14  |
Sean Dettrick
Messages: 12
Registered: April 2002
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Junior Member |
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I have some recent experiences:
Hardware and OS:
If you plan to use a PC with a very recent video card,
then you may find it convenient to use a well supported operating
system like Windows, and don't use Linux. I used a Radeon 8500
video card and an nVidia GeForce3 Ti200, and both of them have very
poor support under linux. I found a 10 times speedup in graphics
rendering when I switched from Linux to Windows. If you have
an older video card Linux is OK (Radeon 7500 reputedly works well,
so do older nVidia cards).
Direct graphics:
You can do basic animations with XINTERANIMATE. This is an IDL
direct grahpics routine. Eventually you will want to use Object
graphics which is much more powerful.
Object graphics:
You will need to learn how to use object graphics with 24-bit color.
Better to start by using existing "widget" codes and "trackball"
codes that you can find on the web, see e.g. dfanning.com
Recording or encoding results:
Easiest of all is to use the MPEG format. To write MPEG
files in IDL, you need to request a (free) MPEG license by email
from your IDL vendors. Once you have this license you can do basic,
good quality animations with XINTERANIMATE and save the results directly
as MPEG files. You can also WRITE_MPEG in object graphics.
You will probably find MPEG results have unwanted artifacts, i.e. are
ugly.
A very good format for storing scientific animations is the FLIC format.
Unfortunately, it has only 8-bit color. For fantastic output you may
want 24-bit color eventually. For this I suggest using the Quicktime
format to make an animation out of a sequence of JPEG images. The
result
is very portable and high quality with relatively small file size.
A quicktime Pro license (required to make quicktime movies) costs about
$30.
Hope this helps.
Sean
"Ho-yong,Jeong" wrote:
>
> I want to make 3-dim animation which deal with climatology data with idl.
> I found the example in noaa homepage.
> But i don't want to get fantastic results yet because i am beginner
> I want to get the advice about 3-d plot and 3-d animation from you
> I don't know how must I start about it .
> I want a good example...
> is it possible to realize 3-dim animaion with idl ?
> I want to look fantastic output
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