12226e4371
and passed as paramters into straight forward non const built in types, i.e. const bool foogbar(const int) becomes bool foobar(int).
127 lines
3.0 KiB
C++
127 lines
3.0 KiB
C++
#include <osg/NodeVisitor>
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#include <osg/Transform>
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#include <stdlib.h>
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using namespace osg;
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NodeVisitor::NodeVisitor(TraversalMode tm)
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{
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_visitorType = NODE_VISITOR;
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_traversalNumber = -1;
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_traversalVisitor = NULL;
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_traversalMode = tm;
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_traversalMask = 0xffffffff;
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_nodeMaskOverride = 0x0;
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}
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NodeVisitor::NodeVisitor(VisitorType type,TraversalMode tm)
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{
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_visitorType = type;
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_traversalNumber = -1;
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_traversalVisitor = NULL;
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_traversalMode = tm;
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_traversalMask = 0xffffffff;
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_nodeMaskOverride = 0x0;
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}
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NodeVisitor::~NodeVisitor()
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{
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// if (_traversalVisitor) detach from _traversalVisitor;
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}
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void NodeVisitor::setTraversalMode(const TraversalMode mode)
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{
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if (_traversalMode==mode) return;
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if (mode==TRAVERSE_VISITOR)
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{
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if (_traversalVisitor==NULL) _traversalMode = TRAVERSE_NONE;
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else _traversalMode = TRAVERSE_VISITOR;
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}
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else
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{
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if (_traversalVisitor.valid()) _traversalVisitor=NULL;
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_traversalMode = mode;
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}
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}
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void NodeVisitor::setTraversalVisitor(NodeVisitor* nv)
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{
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if (_traversalVisitor==nv) return;
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_traversalVisitor = nv;
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if (_traversalVisitor.valid()) _traversalMode = TRAVERSE_VISITOR;
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else _traversalMode = TRAVERSE_NONE;
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}
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class TransformVisitor : public NodeVisitor
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{
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public:
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enum CoordMode
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{
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WORLD_TO_LOCAL,
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LOCAL_TO_WORLD
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};
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CoordMode _coordMode;
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Matrix& _matrix;
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NodeVisitor* _nodeVisitor;
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TransformVisitor(Matrix& matrix,CoordMode coordMode,NodeVisitor* nv):
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NodeVisitor(),
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_coordMode(coordMode),
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_matrix(matrix),
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_nodeVisitor(nv)
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{}
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virtual void apply(Transform& transform)
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{
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if (_coordMode==LOCAL_TO_WORLD)
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{
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osg::Matrix localToWorldMat;
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transform.getLocalToWorldMatrix(localToWorldMat,_nodeVisitor);
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_matrix.preMult(localToWorldMat);
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}
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else // worldToLocal
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{
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osg::Matrix worldToLocalMat;
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transform.getWorldToLocalMatrix(worldToLocalMat,_nodeVisitor);
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_matrix.postMult(worldToLocalMat);
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}
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}
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};
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bool NodeVisitor::getLocalToWorldMatrix(Matrix& matrix, Node* node)
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{
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TransformVisitor tv(matrix,TransformVisitor::LOCAL_TO_WORLD,this);
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for(NodePath::iterator itr=_nodePath.begin();
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itr!=_nodePath.end();
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++itr)
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{
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if (*itr==node) return true; // don't account for matrix attached to specified node
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(*itr)->accept(tv);
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}
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return true;
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}
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bool NodeVisitor::getWorldToLocalMatrix(Matrix& matrix, Node* node)
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{
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TransformVisitor tv(matrix,TransformVisitor::WORLD_TO_LOCAL,this);
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for(NodePath::iterator itr=_nodePath.begin();
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itr!=_nodePath.end();
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++itr)
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{
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if (*itr==node) return true; // don't account for matrix attached to specified node
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(*itr)->accept(tv);
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}
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return true;
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}
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