OsgOsg实例烟雾粒子效果飞机(Qt5.14.2+osgEarht3.6.5+win10)No6EParticlePlane

相关资料：

https://blog.csdn.net/qq_35225556/article/details/109730460?spm=1001.2101.3001.6650.10&utm_medium=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~default-10.no_search_link&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~default-10.no_search_link     osg粒子飞行尾迹

代码实例：

.pro

QT       += core gui widgets
TARGET = TestOsgQt
TEMPLATE = app
DEFINES += QT_DEPRECATED_WARNINGS
CONFIG += c++11

SOURCES += \
        main.cpp

HEADERS +=

OsgDir = D:\\RuanJian\\osg365R
CONFIG(release, debug|release) {
        LIBS += -L$${OsgDir}/lib/ -losgDB -losgViewer -lOpenThreads -losgAnimation -losg \
                                  -losgEarth -losgEarthAnnotation -losgEarthFeatures -losgEarthSymbology -losgEarthUtil \
                                  -losgQOpenGL -losgUtil -losgText -losgTerrain -losgSim \
                                  -losgShadow -losgParticle -losgManipulator -losgGA -losgFX \
                                  -losgWidget
} else {
        LIBS += -L$${OsgDir}/debug/lib/ -losgDBd -losgViewerd -lOpenThreadsd -losgAnimationd -losgd \
                                  -losgEarthd -losgEarthAnnotationd -losgEarthFeaturesd -losgEarthSymbologyd -losgEarthUtild \
                                  -losgQOpenGLd -losgUtild -losgTextd -losgTerraind -losgSimd \
                                  -losgShadowd -losgParticled -losgManipulatord -losgGAd -losgFXd \
}


INCLUDEPATH += $${OsgDir}/include
DEPENDPATH += $${OsgDir}/include

main.cpp

#include <QApplication>

#include <osg/Node>
#include <osg/Group>
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/Texture2D>
#include <osg/StateSet>
#include <osg/PositionAttitudeTransform>
#include <osgViewer/Viewer>
#include <osgDB/ReadFile>
#include <osgParticle/PrecipitationEffect>
// 雨雪效果
#include <osg/MatrixTransform>
// 粒子效果
#include <osgParticle/PrecipitationEffect>
#include <osgParticle/Particle>
#include <osgParticle/LinearInterpolator>
#include <osgParticle/ParticleSystem>
#include <osgParticle/RandomRateCounter>
#include <osgParticle/PointPlacer>
#include <osgParticle/RadialShooter>
#include <osgParticle/ModularEmitter>
#include <osgParticle/ParticleSystemUpdater>
#include <osgParticle/ModularProgram>
#include <osgUtil/Optimizer>
#include <osgUtil/Simplifier>
#include <osgParticle/FireEffect>
// 雾
#include <osg/Fog>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osg/StateSet>
#include <osg/StateAttribute>
#include <osgViewer/ViewerEventHandlers>
#include <osgWidget/ViewerEventHandlers>

//设置飞机动态移动
class transCallback : public osg::NodeCallback
{
public:
    transCallback():delta(0.0){}
    virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
    {
        osg::MatrixTransform* mt = dynamic_cast<osg::MatrixTransform*>(node);
        if(mt)
        {
            mt->setMatrix(osg::Matrix::translate(0,delta,0));
            delta += 0.1;
            traverse(node,nv);
        }
    }
private:
    float delta;
};

//设置飞机尾焰的位置
class firePosCallback : public osgGA::GUIEventHandler
{
public:
    firePosCallback(osg::ref_ptr<osg::MatrixTransform> mt,osg::ref_ptr<osgParticle::FireEffect> _fire):mat(mt),fire(_fire){}
    ~firePosCallback(){}

    bool handle(const osgGA::GUIEventAdapter &ea   ,osgGA::GUIActionAdapter &aa)
    {
        osgViewer::View *viewer = dynamic_cast<osgViewer::View*>(&aa);
        switch (ea.getEventType())
        {
            case osgGA::GUIEventAdapter::FRAME:
                {
                    osg::Vec3 position = mat->getMatrix().getTrans();
                    fire->setPosition(position);
                }
                break;
            default:
                return false;
        }
        return false;
    }

private:
    osg::ref_ptr<osgParticle::FireEffect> fire;
    osg::ref_ptr<osg::MatrixTransform> mat;
};

int main(int argc, char *argv[])
{
    // ------------------粒子效果-----------------------
    osg::ref_ptr<osg::Group> root = new osg::Group;
    osg::ref_ptr<osg::Node> node = osgDB::readNodeFile("D:\\osgFiles\\cessna.osg");
    osg::ref_ptr<osg::MatrixTransform> mt = new osg::MatrixTransform;
    mt->setUpdateCallback(new transCallback);
    mt->addChild(node);

    osg::ref_ptr<osgParticle::FireEffect> fire = new osgParticle::FireEffect(osg::Vec3(0,0,0),50,1);
    fire->setWind(osg::Vec3(1.0f,0.0f,0.0f));
    osg::ref_ptr<osg::MatrixTransform> mtfire = new osg::MatrixTransform;
    mtfire->setMatrix(osg::Matrix::rotate(osg::PI_2,osg::X_AXIS));
    mtfire->addChild(fire);

    root->addChild(mt);
    root->addChild(node);
    root->addChild(mtfire);

    osgViewer::Viewer viewer;
    viewer.addEventHandler(new firePosCallback(mt,fire));
    viewer.addEventHandler(new osgViewer::StatsHandler);
    viewer.setUpViewInWindow(50,50,500,400);
    viewer.setSceneData( root.get() );
    return viewer.run();
}