Re: [osg-users] how can I ignore the UpdateCallback
The viewer didn't draw the node because you set the value to the node mask
to something that also avoids the cull visitor to process (visit) the node?
You can't set it to 0 because you will also achieve this behavior. Take a
look at the method ViewerBase::frame. To render a frame, it does 3
traversals on the scene graph: event traversal, update traversal and
rendering traversal. It uses a different visitor for each traversal. But
each visitor use the same node mask (because it is a node attribute not a
visitor). Each visitor has a mask and it defaults to 0x (all ones).
Each node mask defaults to 0x. So, for each visitor, the
validnodeMask give a result different to 0. I suppose that what you want to
achieve is to control the update visitor, but let the event and rendering
visitor untouchable. So, you need to define the node masks and the visitor
mask to certain values to achieve this behavior. If you set the node mask to
0, all visitors will ignore the node (not what you want). You need also to
set the visitor mask (using NodeVisitor::setTraversalMask).
Try these values:
1) Set the update visitor with the traversal mask to 0x0001 with
viewer.getUpdateVisitor()-setTraversalMask(0x0001).
2) Set the node mask of the node you want not to visit during update
traversal to a value with the last bit set to 0 (0xFFFE)
myNode-setNodeMask(0xFFFE).
Then, the other two visitors will have the default value (0x).
The result:
- Event traversal: traversalMask nodemask = 0x 0xFFFE =
0xFFFE. Not equal to 0, then the node is visited.
- Update traversal: traversalMask nodemask = 0x0001 0xFFFE =
0. Then the node is not visited (the update callback isn't called).
- Rendering traversal: traversalMask nodemask = 0x
0xFFFE = 0xFFFE. Not equal to 0, then the node is rendered.
Of course, i'm just guessing about what you have coded. Try this if you
want. I suppose your idea could also work, but the difficulty will be how to
define a new event.
Best regards,
Himar.
2009/10/16 Martin Großer grosser.mar...@gmx.de
Hello,
Paul, when I stop the sim time then stop all animation. Or is it a wrong
guess?
Himar, I tried to change the NodeMask and the viewer did not draw the node.
I think all functions were ignored, but I would ignore the update callback
only.
I have an idea. Can I Copy the update callback to event callback and after
this I remove the udate callback. Now I can define a event to run the
event callback?
Cheers, Martin
Am 16.10.2009 08:59, schrieb Himar Carmona:
Hi,
Specifically, AnimationPathCallback has a setPause method.
More generally, you can control which nodes OSG updates (i.e. visits
during an updateTraversal) using node masks. Look at the methods
osg::NodeVisitor::setTraversalMask and validNodeMask for an explanation
about how it works. In short, visitors have a bit mask (defaults to
0x) and nodes have a bit mask (defaults to 0x). If the
bitwise and operation between them gives a result other than 0, the node
will be visited. If the result is 0, the node will not be visited. (Really
the node wil be visited but the update callback will not be called). Node
visitors has also a Node mask override that allow you to override the node
mask to force the node to be visited ignoring its mask.
Hope this helps.
Himar.
2009/10/15 Paul Martz pma...@skew-matrix.com
AnimationPath runs off of sim time, so if you mod your app to not
increment sim time, then the animation will not play.
Paul Martz
Skew Matrix Software LLC
_http://www.skew-matrix.com_ http://www.skew-matrix.com/
+1 303 859 9466
Martin Großer wrote:
Hello,
my short question is. When I have a Node with an UpdateCallback function
(maybe a animation), can I skip this function?
Also my Problem is, I export a graph from 3D Max with an animation. The
animation is in a update callback function like the following lines:
[...]
MatrixTransform {
DataVariance DYNAMIC
name Kugel01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1.0
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
[...]
But I would not start the animation right at the beginning. I think the
viewer calls the update function (update visitor) every frame. I want to
start manually the animation. There are an easy way?
Cheers,
Martin
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Re: [osg-users] how can I ignore the UpdateCallback
Hi,
Specifically, AnimationPathCallback has a setPause method.
More generally, you can control which nodes OSG updates (i.e. visits
during an updateTraversal) using node masks. Look at the methods
osg::NodeVisitor::setTraversalMask and validNodeMask for an explanation
about how it works. In short, visitors have a bit mask (defaults to
0x) and nodes have a bit mask (defaults to 0x). If the
bitwise and operation between them gives a result other than 0, the node
will be visited. If the result is 0, the node will not be visited. (Really
the node wil be visited but the update callback will not be called). Node
visitors has also a Node mask override that allow you to override the node
mask to force the node to be visited ignoring its mask.
Hope this helps.
Himar.
2009/10/15 Paul Martz pma...@skew-matrix.com
AnimationPath runs off of sim time, so if you mod your app to not increment
sim time, then the animation will not play.
Paul Martz
Skew Matrix Software LLC
_http://www.skew-matrix.com_ http://www.skew-matrix.com/
+1 303 859 9466
Martin Großer wrote:
Hello,
my short question is. When I have a Node with an UpdateCallback function
(maybe a animation), can I skip this function?
Also my Problem is, I export a graph from 3D Max with an animation. The
animation is in a update callback function like the following lines:
[...]
MatrixTransform {
DataVariance DYNAMIC
name Kugel01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1.0
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
[...]
But I would not start the animation right at the beginning. I think the
viewer calls the update function (update visitor) every frame. I want to
start manually the animation. There are an easy way?
Cheers,
Martin
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Re: [osg-users] how can I ignore the UpdateCallback
Hello,
Paul, when I stop the sim time then stop all animation. Or is it a wrong
guess?
Himar, I tried to change the NodeMask and the viewer did not draw the
node. I think all functions were ignored, but I would ignore the update
callback only.
I have an idea. Can I Copy the update callback to event callback and
after this I remove the udate callback. Now I can define a event to
run the event callback?
Cheers, Martin
Am 16.10.2009 08:59, schrieb Himar Carmona:
Hi,
Specifically, AnimationPathCallback has a setPause method.
More generally, you can control which nodes OSG updates (i.e.
visits during an updateTraversal) using node masks. Look at the
methods osg::NodeVisitor::setTraversalMask and validNodeMask for an
explanation about how it works. In short, visitors have a bit
mask (defaults to 0x) and nodes have a bit mask (defaults to
0x). If the bitwise and operation between them gives a
result other than 0, the node will be visited. If the result is 0, the
node will not be visited. (Really the node wil be visited but the
update callback will not be called). Node visitors has also a Node
mask override that allow you to override the node mask to force the
node to be visited ignoring its mask.
Hope this helps.
Himar.
2009/10/15 Paul Martz pma...@skew-matrix.com
mailto:pma...@skew-matrix.com
AnimationPath runs off of sim time, so if you mod your app to not
increment sim time, then the animation will not play.
Paul Martz
Skew Matrix Software LLC
_http://www.skew-matrix.com_ http://www.skew-matrix.com_/
http://www.skew-matrix.com/
+1 303 859 9466
Martin Großer wrote:
Hello,
my short question is. When I have a Node with an
UpdateCallback function (maybe a animation), can I skip this
function?
Also my Problem is, I export a graph from 3D Max with an
animation. The animation is in a update callback function like
the following lines:
[...]
MatrixTransform {
DataVariance DYNAMIC
name Kugel01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1.0
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
[...]
But I would not start the animation right at the beginning. I
think the viewer calls the update function (update visitor)
every frame. I want to start manually the animation. There are
an easy way?
Cheers,
Martin
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[osg-users] how can I ignore the UpdateCallback
Hello,
my short question is. When I have a Node with an UpdateCallback function
(maybe a animation), can I skip this function?
Also my Problem is, I export a graph from 3D Max with an animation. The
animation is in a update callback function like the following lines:
[...]
MatrixTransform {
DataVariance DYNAMIC
name Kugel01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1.0
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
[...]
But I would not start the animation right at the beginning. I think the
viewer calls the update function (update visitor) every frame. I want to
start manually the animation. There are an easy way?
Cheers,
Martin
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osg-users@lists.openscenegraph.org
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Re: [osg-users] how can I ignore the UpdateCallback
AnimationPath runs off of sim time, so if you mod your app to not
increment sim time, then the animation will not play.
Paul Martz
Skew Matrix Software LLC
_http://www.skew-matrix.com_ http://www.skew-matrix.com/
+1 303 859 9466
Martin Großer wrote:
Hello,
my short question is. When I have a Node with an UpdateCallback function
(maybe a animation), can I skip this function?
Also my Problem is, I export a graph from 3D Max with an animation. The
animation is in a update callback function like the following lines:
[...]
MatrixTransform {
DataVariance DYNAMIC
name Kugel01
nodeMask 0xff
cullingActive TRUE
UpdateCallbacks {
AnimationPathCallback {
DataVariance DYNAMIC
pivotPoint 0 0 0
timeOffset 0
timeMultiplier 1.0
AnimationPath {
DataVariance DYNAMIC
LoopMode LOOP
ControlPoints {
[...]
But I would not start the animation right at the beginning. I think the
viewer calls the update function (update visitor) every frame. I want to
start manually the animation. There are an easy way?
Cheers,
Martin
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