osg-water-reflect.rar_osg_osg ocean_osg reflect_water_water in o

#include <osg/Camera> #include <osg/Texture2D> #include <osgDB/ReadFile> #include <osgViewer/Viewer> #include <osg/Image> #include <osg/BlendFunc> #include <osg/BlendEquation> #include <osg/TexMat> #include <osg/MatrixTransform> #include <Windows.h> #include <iostream> using namespace std; class RefCameraCallBack: public osg::NodeCallback//这个是反射相机的回调，这个相机是根据视点的相机的变化而变化 //位置就是视点在水平面的镜像，这个也较容易实现，我的代码写的乱， //大家了解方法就行，可以自己动手改进一下。 { public: RefCameraCallBack(osg::Camera * camera):_cankaoCamera(camera),_frist(true),_yizi(1.0f) { //_rttCamera->attach(osg::Camera::BufferComponent::COLOR_BUFFER,_image); } ~RefCameraCallBack(){} virtual void operator() (osg::Node *node, osg::NodeVisitor *nv) { _RttCamera=dynamic_cast<osg::Camera *>(node); //if(_RttCamera==NULL) osg::ref_ptr<osg::GraphicsContext::WindowingSystemInterface> wsi=osg::GraphicsContext::getWindowingSystemInterface(); if(!wsi) cout<<"转型出错"<<endl; //osg::GraphicsContext::ScreenIdentifier screen(0); //wsi->getScreenResolution(screen,width,height); const osg::GraphicsContext::Traits * traits=_cankaoCamera->getGraphicsContext()->getTraits(); w_h=traits->width/traits->height; _time=_cankaoCamera->getView()->getFrameStamp()->getSimulationTime(); ViewCalculate(); cout<<_time<<endl; _RttCamera->setViewMatrix(_cankaoCamera->getViewMatrix()); //_RttCamera->setViewMatrixAsLookAt(_eye_Positon,_eye_Center,_eye_Up); double aspectRatio,zNear, zFar; _cankaoCamera->getProjectionMatrixAsPerspective(fovy,aspectRatio,zNear,zFar); //cout<<aspectRatio<<endl; cout<<traits->width<<" "<<traits->height<<endl; w_h=float(aspectRatio); //double newAspect=traits->width/traits->height; //double yizi=newAspect/aspectRatio; //_RttCamera->setProjectionMatrix(_cankaoCamera->getProjectionMatrix()*osg::Matrix::scale(1.0/yizi,1.0,1.0)); //_RttCamera->setProjectionMatrixAsPerspective(fovy,1.0/yizi,zNear,zFar); _RttCamera->setProjectionMatrix(_cankaoCamera->getProjectionMatrix()); } //osg::Image * getImage(){return _image.get();} //osg::Node * getReflectionNode(){return _water;} float getW_H(){return w_h;} float getFovy(){return static_cast<float>(osg::DegreesToRadians(fovy/2.0));} osg::Vec3 &getViewPosition(){return _eye_Positon;} double getTime(){return _time;} protected: virtual void ViewCalculate() { _cankaoCamera->getViewMatrixAsLookAt(_eye_Positon,_eye_Center,_eye_Up,10.0); //_eye_Positon.z()=(_eye_Positon.z()-_waterHigh)*2-_eye_Positon.z(); //_eye_Center.z()=(_eye_Center.z()-_waterHigh)*2-_eye_Center.z(); //_eye_Positon.z()=-_eye_Positon.z(); //_eye_Center.z()=-_eye_Center.z(); //_m=_cankaoCamera->getProjectionMatrix(); } private: osg::Camera * _cankaoCamera; osg::Camera * _RttCamera; osg::Matrix _m; float w_h; double fovy; float _waterHigh; bool _frist; unsigned int _Width; float _yizi; osg::Vec3 _eye_Positon; osg::Vec3 _eye_Center; osg::Vec3 _eye_Up; mutable double _time; float _lookDistance;//这个值的意思是指眼的位置与中心的距离，osg的观察方式设计中是一个向量，只有方向，大小直接可以自己设置， //这个值越大则设置的焦点越远，比如建筑物。值越小则距焦点越近，比如静物写真。 //还可以讲这个值想象成3ds Max软件中目标相机的目标点与相机的距离。 //这里将这个值默认的设置成100.0 }; class updateViewShader : public osg::Uniform::Callback { public: updateViewShader(RefCameraCallBack * ref):_ref(ref){} virtual void operator() ( osg::Uniform* uniform, osg::NodeVisitor* nv ) { uniform->set(_ref->getViewPosition()); } private: RefCameraCallBack * _ref; }; class updateW_HShader : public osg::Uniform::Callback { public: updateW_HShader(RefCameraCallBack * ref):_ref(ref){} virtual void operator() ( osg::Uniform* uniform, osg::NodeVisitor* nv ) { if (!uniform) { cout<<"转型出错"<<endl; return; } uniform->set((_ref->getW_H())); float t; uniform->get(t); cout<<t<<endl; } private: RefCameraCallBack * _ref; }; class updateFovyShader : public osg::Uniform::Callback { public: updateFovyShader(RefCameraCallBack * ref):_ref(ref){} virtual void operator() ( osg::Uniform* uniform, osg::NodeVisitor* nv ) { if (!uniform) { cout<<"转型出错"<<endl; return; } uniform->set((_ref->getFovy())); float t; uniform->get(t); cout<<t<<endl; } private: RefCameraCallBack * _ref; }; class updateTimeShader : public osg::Uniform::Callback { public: updateTimeShader(RefCameraCallBack * ref):_ref(ref){} virtual void operator() ( osg::Uniform* uniform, osg::NodeVisitor* nv ) { if (!uniform) { cout<<"转型出错"<<endl; return; } uniform->set(static_cast<float>((_ref->getTime()))); float t; uniform->get(t); cout<<t<<endl; } private: RefCameraCallBack * _ref; }; int main( int argc, char** argv ) { osgViewer::Viewer viewer; //////////////////////////////////////////////////////////////////////////注意路径 osg::ref_ptr<osg::Node> other = osgDB::readNodeFile( "E://ALL_TEST//OSG_TEST//debug//data//other.3ds" );//这个是水两边的瓷片，呵呵，为了更像一些 osg::ref_ptr<osg::Node> water=osgDB::readNodeFile("E://ALL_TEST//OSG_TEST//debug//data//water.3ds");//水的节点，就是一个平面 osg::ref_ptr<osg::Node> tree=osgDB::readNodeFile( "E://ALL_TEST//OSG_TEST//debug//data//tree.3ds" );//树 osg::ref_ptr<osg::Node> sky=osgDB::readNodeFile( "E://ALL_TEST//OSG_TEST//debug//data//sky.3ds" );//天空球 //osg::ref_ptr<osg::Node> _ref=osgDB::readNodeFile( "E:/ALL_TEST/OSG_TEST/debug/data/ref.3ds" );// //////////////////////////////////////////////////////////////////////////创建rtt相机 osg::ref_ptr<osg::Camera> rtt=new osg::Camera; rtt->setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); rtt->setReferenceFrame( osg::Transform::ReferenceFrame::ABSOLUTE_RF_INHERIT_VIEWPOINT ); rtt->setRenderOrder( osg::Camera::PRE_RENDER );//提前渲染 rtt->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT ); //////////////////////////////////////////////////////////////////////////创建rtt相机结束 //////////////////////////////////////////////////////////////////////////这里有必要说一下 //本来打