the norm is to move the camera/view point and not the terrain ( the track
ball is designed to look at a model rather then move around )
See motion models such as drive and fly ( in DriveManipulator.cpp and
FlightManipulator )
Also see the tutorials' section
http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials
See Paul's quick start guide http://www.osgbooks.com/books/osg_qs.html
__
Gordon Tomlinson
[EMAIL PROTECTED]
IM: [EMAIL PROTECTED]
www.vis-sim.com www.gordontomlinson.com
__
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Allen
Sent: Thursday, November 20, 2008 6:45 PM
To: osg-users@lists.openscenegraph.org
Subject: [osg-users] Cameras Non-Moving Terrain
Hi Sukender, :-)
Well, what I want is the ability to have the terrain to appear to
remain still while I move the camera around on it. The glider example
and the animate example are what I'm basing my research/work on and in
both cases, when the camera moves it appears that the object I'm
looking at is actually moving and not the camera.
So, I must be able to move through the terrain like the
TrackballManipulator allows but move the camera and leave the terrain
still.
Is this any clearer? I've looked W the link you provided but I've NO
clue as to how to use what you are suggesting. I'm too much a newbie to
3d Visualization - about 1.5 yrs worth - to understand what you're
referring to. If you know of any example(s) that I could look @ and
copy, that would be awesome!!! Do you know of or have any?
Message: 5
Date: Thu, 20 Nov 2008 23:51:03 +0100
From: Sukender [EMAIL PROTECTED]
Subject: Re: [osg-users] Cameras a NON-Moving Terrain
To: OpenSceneGraph Users osg-users@lists.openscenegraph.org
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=iso-8859-15
Hi Allen,
Do you mean you want a subgraph to appear as if it was at an infinite
distance, such as for skyboxes?
If so, you can try to create your own transform that removes the
translation. That costs 4 lines of code (See
http://pvle.sourceforge.net/Doc/Html/MoveWithEyePointTransform_8h-source.htm
l for an example).
You may also create a transform that removes rotation if needed.
Sincerely,
Sukender
PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/
Le Thu, 20 Nov 2008 23:45:27 +0100, Allen [EMAIL PROTECTED] a
?crit:
Hi. Could someone tell me or point me in the direction of finding an
example that illustrates how to move the camera in a scene but NOT make
it appear that the terrain is moving? I want a perspective terrain w/in
my scene and I want to move the camera through the scene but I DO NOT
WANT it to appear that the Earth is moving when the user moves the
mouse. I just can not figure this feat out. Can anyone help me?
--Allen
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