[osg-users] extracting camera path from model
hello,
I have a model and camera animation path exported from 3ds max to osg
format.
In OpenSceneGraph I want to jump to any point along this animation, so I'm
trying to extract the AnimationPath ControlPoints.
Here is the relevant part of the osg file:
PositionAttitudeTransform {
DataVariance DYNAMIC
name Camera01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
0 235.432098388672 9.58514785766602 0 0.500558972358704
0.499440401792526 0.499440401792526 0.500559031963348 1.0011920929
0.99761581421 1.0023841858
...
So you can see the AnimationPath is stored within a callback within a
Transform. My problem is I haven't figured out how to extract this path.
There was a similar thread on this earlier (
http://groups.google.com/group/osg-users/browse_thread/thread/f89d14baf366385b/1c9e025662bf2544)
but the author was just after an initial position.
I looked at getUpdateCallback() but the interface of its return type
NodeCallback looks like a dead end.
Has anyone done this before?
regards,
Richard
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Re: [osg-users] extracting camera path from model
Hi Richard,
You find the node with animation path callback on and then you use
dynamic_cast:
osg::AnimationPathCallback* apc =
dynamic_castosg::AnimationPathCallback*(node-getUpdateCallback());
Robert.
On Thu, Sep 25, 2008 at 8:38 AM, Richard Baron Penman
[EMAIL PROTECTED] wrote:
hello,
I have a model and camera animation path exported from 3ds max to osg
format.
In OpenSceneGraph I want to jump to any point along this animation, so I'm
trying to extract the AnimationPath ControlPoints.
Here is the relevant part of the osg file:
PositionAttitudeTransform {
DataVariance DYNAMIC
name Camera01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
0 235.432098388672 9.58514785766602 0 0.500558972358704
0.499440401792526 0.499440401792526 0.500559031963348 1.0011920929
0.99761581421 1.0023841858
...
So you can see the AnimationPath is stored within a callback within a
Transform. My problem is I haven't figured out how to extract this path.
There was a similar thread on this earlier
(http://groups.google.com/group/osg-users/browse_thread/thread/f89d14baf366385b/1c9e025662bf2544)
but the author was just after an initial position.
I looked at getUpdateCallback() but the interface of its return type
NodeCallback looks like a dead end.
Has anyone done this before?
regards,
Richard
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
___
osg-users mailing list
osg-users@lists.openscenegraph.org
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Re: [osg-users] extracting camera path from model
oh now I see it - thanks very much! Hi Richard, You find the node with animation path callback on and then you use dynamic_cast: osg::AnimationPathCallback* apc = dynamic_castosg::AnimationPathCallback*(node-getUpdateCallback()); Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
