-/// Hmm: move that kind of configuration into the model file???
-class LineCollector : public osg::NodeVisitor {
- struct LinePrimitiveFunctor {
- LinePrimitiveFunctor() : _lineCollector(0)
- { }
- void operator() (const osg::Vec3&, bool)
- { }
- void operator() (const osg::Vec3& v1, const osg::Vec3& v2, bool)
- { if (_lineCollector) _lineCollector->addLine(v1, v2); }
- void operator() (const osg::Vec3&, const osg::Vec3&, const osg::Vec3&,
- bool)
- { }
- void operator() (const osg::Vec3&, const osg::Vec3&, const osg::Vec3&,
- const osg::Vec3&, bool)
- { }
- LineCollector* _lineCollector;
- };
-
-public:
- LineCollector() :
- osg::NodeVisitor(osg::NodeVisitor::NODE_VISITOR,
- osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
- { }
- virtual void apply(osg::Geode& geode)
- {
- osg::TemplatePrimitiveFunctor<LinePrimitiveFunctor> pf;
- pf._lineCollector = this;
- for (unsigned i = 0; i < geode.getNumDrawables(); ++i) {
- geode.getDrawable(i)->accept(pf);
- }
- }
- virtual void apply(osg::Node& node)
- {
- traverse(node);
- }
- virtual void apply(osg::Transform& transform)
- {
- osg::Matrix matrix = _matrix;
- if (transform.computeLocalToWorldMatrix(_matrix, this))
- traverse(transform);
- _matrix = matrix;
- }
-
- const std::vector<SGLineSegmentf>& getLineSegments() const
- { return _lineSegments; }
-
- void addLine(const osg::Vec3& v1, const osg::Vec3& v2)
- {
- // Trick to get the ends in the right order.
- // Use the x axis in the original coordinate system. Choose the
- // most negative x-axis as the one pointing forward
- SGVec3f tv1(_matrix.preMult(v1));
- SGVec3f tv2(_matrix.preMult(v2));
- if (tv1[0] > tv2[0])
- _lineSegments.push_back(SGLineSegmentf(tv1, tv2));
- else
- _lineSegments.push_back(SGLineSegmentf(tv2, tv1));
- }
-
- void addBVHElements(osg::Node& node, simgear::BVHLineGeometry::Type type)
- {
- if (_lineSegments.empty())
- return;
-
- SGSceneUserData* userData;
- userData = SGSceneUserData::getOrCreateSceneUserData(&node);
-
- simgear::BVHNode* bvNode = userData->getBVHNode();
- if (!bvNode && _lineSegments.size() == 1) {
- simgear::BVHLineGeometry* bvLine;
- bvLine = new simgear::BVHLineGeometry(_lineSegments.front(), type);
- userData->setBVHNode(bvLine);
- return;
- }
-
- simgear::BVHGroup* group = new simgear::BVHGroup;
- if (bvNode)
- group->addChild(bvNode);
-
- for (unsigned i = 0; i < _lineSegments.size(); ++i) {
- simgear::BVHLineGeometry* bvLine;
- bvLine = new simgear::BVHLineGeometry(_lineSegments[i], type);
- group->addChild(bvLine);
- }
- userData->setBVHNode(group);
- }
-
-private:
- osg::Matrix _matrix;
- std::vector<SGLineSegmentf> _lineSegments;
-};
-
-class FGCarrierVisitor : public osg::NodeVisitor {
-public:
- FGCarrierVisitor(FGAICarrier* carrier,
- const std::list<std::string>& wireObjects,
- const std::list<std::string>& catapultObjects) :
- osg::NodeVisitor(osg::NodeVisitor::NODE_VISITOR,
- osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
- mWireObjects(wireObjects),
- mCatapultObjects(catapultObjects)
- { }
- virtual void apply(osg::Node& node)
- {
- if (std::find(mWireObjects.begin(), mWireObjects.end(), node.getName())
- != mWireObjects.end()) {
- LineCollector lineCollector;
- node.accept(lineCollector);
- simgear::BVHLineGeometry::Type type;
- type = simgear::BVHLineGeometry::CarrierWire;
- lineCollector.addBVHElements(node, type);
- }
- if (std::find(mCatapultObjects.begin(), mCatapultObjects.end(),
- node.getName()) != mCatapultObjects.end()) {
- LineCollector lineCollector;
- node.accept(lineCollector);
- simgear::BVHLineGeometry::Type type;
- type = simgear::BVHLineGeometry::CarrierCatapult;
- lineCollector.addBVHElements(node, type);
- }
-
- traverse(node);
- }
-
-private:
- std::list<std::string> mWireObjects;
- std::list<std::string> mCatapultObjects;
-};
-