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Updated to slideshow3D to support animation + pausing of animation.

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Updated associated osg/osgUtil classes that provide animation pausing.
This commit is contained in:
Robert Osfield
2003-11-03 23:13:31 +00:00
parent de77cede2b
commit bc7622149d
13 changed files with 679 additions and 116 deletions
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12
src/osgUtil/TransformCallback.cpp
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@@ -24,6 +24,8 @@ TransformCallback::TransformCallback(const osg::Vec3& pivot,const osg::Vec3& axi
_previousTraversalNumber = -1;
_previousTime = -1.0;
_pause = false;
}
void TransformCallback::operator() (osg::Node* node, osg::NodeVisitor* nv)
@@ -34,14 +36,14 @@ void TransformCallback::operator() (osg::Node* node, osg::NodeVisitor* nv)
const osg::FrameStamp* fs = nv->getFrameStamp();
if (!fs) return; // not frame stamp, no handle on the time so can't move.
double newTime = fs->getReferenceTime();
// ensure that we do not operate on this node more than
// once during this traversal. This is an issue since node
// can be shared between multiple parents.
if (nv->getTraversalNumber()!=_previousTraversalNumber)
if (!_pause && nv->getTraversalNumber()!=_previousTraversalNumber)
{
double newTime = fs->getReferenceTime();
float delta_angle = _angular_velocity*(newTime-_previousTime);
osg::Matrix mat = osg::Matrix::translate(-_pivot)*
@@ -53,8 +55,10 @@ void TransformCallback::operator() (osg::Node* node, osg::NodeVisitor* nv)
transform->preMult(mat);
_previousTraversalNumber = nv->getTraversalNumber();
_previousTime = newTime;
}
_previousTime = newTime;
}
// must call any nested node callbacks and continue subgraph traversal.