OSG漫游器代码.doc

附录1：“钢铁物流基地3D园区”漫游器全部代码如下：TraveManipulator.h/碰撞检测if(m_bPeng)/得到新的位置osg:Vec3 newPos1=m_vPosition+delta;osgUtil:IntersectVisitor ivXY;/根据新的位置得到两条线段检测osg:ref_ptrlineXY=new osg:LineSegment(newPos1,m_vPosition);osg:ref_ptrlineZ=new osg:LineSegment(newPos1+osg:Vec3(0.0f,0.0f,10.0f),newPos1-osg:Vec3(0.0f,0.0f,10.0f);ivXY.addLineSegment(lineZ.get();ivXY.addLineSegment(lineXY.get();/结构交集检测m_pHostViewer-getSceneData()-accept(ivXY);/如果没有碰撞检测if (!ivXY.hits()m_vPosition+=delta;elsem_vPosition+=delta;main.cpp#include #include #include #include #include #include #include #include #include TravelManipulator.hint main()osg:ref_ptrviewer=new osgViewer:Viewer();/把漫游器加入到场景中TravelManipulator:TravelToScene(viewer.get();/viewer-setCameraManipulator(new osgGA:TerrainManipulator);osg:ref_ptrroot=new osg:Group();/读取地形osg:ref_ptrnode=osgDB:readNodeFile(TMCC.IVE);root-addChild(node.get();osgUtil:Optimizer optimizer;optimizer.optimize(root.get();viewer-setSceneData(root.get();viewer-realize();viewer-run();return 0;TravelManipulator.cpp#include TravelManipulator.hTravelManipulator:TravelManipulator():m_fMoveSpeed(8.0f),m_bLeftButtonDown(false),m_fPushX(0),m_fAngle(0.5),m_bPeng(true),m_fPushY(0)m_vPosition=osg:Vec3(0.0f,0.0f,5.0f);m_vRotation=osg:Vec3(osg:PI_2,0.0f,0.0f);TravelManipulator:TravelManipulator()/把漫游加到场景中去TravelManipulator* TravelManipulator:TravelToScene(osg:ref_ptrviewer)TravelManipulator* camera=new TravelManipulator;viewer-setCameraManipulator(camera);camera-m_pHostViewer=viewer;return camera;void TravelManipulator:setByMatrix(const osg:Matrixd& matrix)void TravelManipulator:setByInverseMatrix(const osg:Matrixd& matrix)osg:Matrixd TravelManipulator:getMatrix(void) constosg:Matrixd mat;mat.makeRotate(m_vRotation._v0,osg:Vec3(1.0f,0.0f,0.0f),m_vRotation._v1,osg:Vec3(0.0f,1.0f,0.0f),m_vRotation._v2,osg:Vec3(0.0f,0.0f,1.0f);return mat*osg:Matrixd:translate(m_vPosition);osg:Matrixd TravelManipulator:getInverseMatrix(void)constosg:Matrixd mat;mat.makeRotate(m_vRotation._v0,osg:Vec3(1.0f,0.0f,0.0f),m_vRotation._v1,osg:Vec3(0.0f,1.0f,0.0f),m_vRotation._v2,osg:Vec3(0.0f,0.0f,1.0f);return osg:Matrixd:inverse(mat * osg:Matrixd:translate(m_vPosition);/事件处理函数bool TravelManipulator:handle(const osgGA:GUIEventAdapter& ea,osgGA:GUIActionAdapter& us)float mouseX=ea.getX();float mouseY=ea.getY();switch(ea.getEventType()case (osgGA:GUIEventAdapter:KEYDOWN):/空格键if (ea.getKey()=0x20)us.requestRedraw();us.requestContinuousUpdate(false);return true;/上移动if (ea.getKey()=0xFF50)ChangePosition(osg:Vec3(0,0,m_fMoveSpeed);return true;/下移动if (ea.getKey()=0xFF57)ChangePosition(osg:Vec3(0,0,-m_fMoveSpeed);return true;/增加速度if (ea.getKey()=0x2B)m_fMoveSpeed+=1.0f;return true;/减少速度if (ea.getKey()=0x2D)m_fMoveSpeed-=1.0f;if (m_fMoveSpeed=1.8)/3.14m_vRotation._v0=1.8;/3.14if (m_vRotation._v0=1.5)/0 二分之=1.57m_vRotation._v0=1.5;/0m_fPushX=mouseX;m_fPushY=mouseY; return false;/鼠标释放case (osgGA:GUIEventAdapter:RELEASE):if (ea.getButton()=1)m_bLeftButtonDown=false; return false;default: return false;void TravelManipulator:ChangePosition(osg:Vec3& delta)/碰撞检测if(m_bPeng)/得到新的位置osg:Vec3 newPos1=m_vPosition+delta;osgUtil:IntersectVisitor ivXY;/根据新的位置得到两条线段检测osg:ref_ptrlineXY=new osg:LineSegment(newPos1,m_vPosition);osg:ref_ptrlineZ=new osg:LineSegment(newPos1+osg:Vec3(0.0f,0.0f,10.0f),newPos1-osg:Vec3(0.0f,0.0f,10.0f);ivXY.addLineSegment(lineZ.get();ivXY.addLineSegment(lineXY.get();/结构交集检测m_pHostViewer-getSceneData()-accept(ivXY);/如果没有碰撞检测if (!ivXY.hits()m_vPosition+=delta;elsem_vPosition+=delta;/设置速度void TravelManipulator:setSpeed(float sp)m_fMoveSpeed=sp;float Tra