977ec20751
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14244 16af8721-9629-0410-8352-f15c8da7e697
67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2013 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/ScriptEngine>
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#include <osg/UserDataContainer>
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using namespace osg;
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ScriptEngine* ScriptNodeCallback::getScriptEngine(osg::NodePath& nodePath)
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{
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if (!_script) return 0;
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for(osg::NodePath::reverse_iterator itr = nodePath.rbegin();
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itr != nodePath.rend();
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++itr)
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{
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osg::Node* node = *itr;
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osg::UserDataContainer* udc = node->getUserDataContainer();
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if (udc)
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{
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ScriptEngine* engine = dynamic_cast<ScriptEngine*>(udc->getUserObject(_script->getLanguage()));
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if (engine) return engine;
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}
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}
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return 0;
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}
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void ScriptNodeCallback::operator()(Node* node, NodeVisitor* nv)
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{
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ScriptEngine* engine = getScriptEngine(nv->getNodePath());
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if (engine && _script.valid())
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{
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// To handle the case where a NodeVisitor is created on the stack and can't be automatically ref counted
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// we take a reference to prevent the inputParameters reference to the NodeVisitor making it's ref count going to zero and causing a delete.
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ref_ptr<NodeVisitor> ref_nv(nv);
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{
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Parameters inputParameters;
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inputParameters.push_back(node);
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inputParameters.push_back(nv);
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// empty outputParameters
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Parameters outputParameters;
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engine->run(_script.get(), _entryPoint, inputParameters, outputParameters);
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}
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// now release the ref_ptr used to protected the NodeVisitor from deletion.
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ref_nv.release();
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}
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// note, callback is responsible for scenegraph traversal so
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// they must call traverse(node,nv) to ensure that the
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// scene graph subtree (and associated callbacks) are traversed.
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traverse(node,nv);
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}
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