void Dragger::dispatch(MotionCommand& command)
{
// apply any constraints
for(Constraints::iterator itr = _constraints.begin();
itr != _constraints.end();
++itr)
{
command.accept(*(*itr));
}
// apply any constraints of parent dragger.
if (getParentDragger()!=this)
{
for(Constraints::iterator itr = getParentDragger()->getConstraints().begin();
itr != getParentDragger()->getConstraints().end();
++itr)
{
command.accept(*(*itr));
}
}
// move self
getParentDragger()->receive(command);
// pass on movement to any dragger callbacks
for(DraggerCallbacks::iterator itr = getParentDragger()->getDraggerCallbacks().begin();
itr != getParentDragger()->getDraggerCallbacks().end();
++itr)
{
command.accept(*(*itr));
}
}
bool DraggerTransformCallback::receive(const MotionCommand& command)
{
if (!_transform) return false;
switch (command.getStage())
{
case MotionCommand::START:
{
// Save the current matrix
_startMotionMatrix = _transform->getMatrix();
// Get the LocalToWorld and WorldToLocal matrix for this node.
osg::NodePath nodePathToRoot;
computeNodePathToRoot(*_transform,nodePathToRoot);
_localToWorld = osg::computeLocalToWorld(nodePathToRoot);
_worldToLocal = osg::Matrix::inverse(_localToWorld);
return true;
}
case MotionCommand::MOVE:
{
//OSG_NOTICE<<"MotionCommand::MOVE "<<command.getMotionMatrix()<<std::endl;
// Transform the command's motion matrix into local motion matrix.
osg::Matrix localMotionMatrix = _localToWorld * command.getWorldToLocal()
* command.getMotionMatrix()
* command.getLocalToWorld() * _worldToLocal;
// Transform by the localMotionMatrix
_transform->setMatrix(localMotionMatrix * _startMotionMatrix);
return true;
}
case MotionCommand::FINISH:
{
return true;
}
case MotionCommand::NONE:
default:
return false;
}
}
bool Selection::receive(const MotionCommand& command)
{
switch (command.getStage())
{
case MotionCommand::START:
{
// Save the current matrix
_startMotionMatrix = getMatrix();
// Get the LocalToWorld and WorldToLocal matrix for this node.
osg::NodePath nodePathToRoot;
computeNodePathToRoot(*this,nodePathToRoot);
_localToWorld = osg::computeLocalToWorld(nodePathToRoot);
_worldToLocal = osg::Matrix::inverse(_localToWorld);
return true;
}
case MotionCommand::MOVE:
{
// Transform the command's motion matrix into local motion matrix.
osg::Matrix localMotionMatrix = _localToWorld * command.getWorldToLocal()
* command.getMotionMatrix()
* command.getLocalToWorld() * _worldToLocal;
// Transform by the localMotionMatrix
setMatrix(localMotionMatrix * _startMotionMatrix);
return true;
}
case MotionCommand::FINISH:
{
return true;
}
case MotionCommand::NONE:
default:
return false;
}
}
