Osg-Osg实例烟雾粒子效果(Qt5.14.2+osgEarht3.6.5+win10)-No4-Particle

相关资料：

https://www.jianshu.com/p/6c37c4334c8f    OSG仿真案例（4）——创建烟雾粒子效果

代码实例：

.pro

 1 QT       += core gui widgets
 2 TARGET = TestOsgQt
 3 TEMPLATE = app
 4 DEFINES += QT_DEPRECATED_WARNINGS
 5 CONFIG += c++11
 6 
 7 SOURCES += \
 8         main.cpp
 9 
10 HEADERS +=
11 
12 OsgDir = D:\\RuanJian\\osg365R
13 CONFIG(release, debug|release) {
14         LIBS += -L$${OsgDir}/lib/ -losgDB -losgViewer -lOpenThreads -losgAnimation -losg \
15                                   -losgEarth -losgEarthAnnotation -losgEarthFeatures -losgEarthSymbology -losgEarthUtil \
16                                   -losgQOpenGL -losgUtil -losgText -losgTerrain -losgSim \
17                                   -losgShadow -losgParticle -losgManipulator -losgGA -losgFX \
18                                   -losgWidget
19 } else {
20         LIBS += -L$${OsgDir}/debug/lib/ -losgDBd -losgViewerd -lOpenThreadsd -losgAnimationd -losgd \
21                                   -losgEarthd -losgEarthAnnotationd -losgEarthFeaturesd -losgEarthSymbologyd -losgEarthUtild \
22                                   -losgQOpenGLd -losgUtild -losgTextd -losgTerraind -losgSimd \
23                                   -losgShadowd -losgParticled -losgManipulatord -losgGAd -losgFXd \
24 }
25 
26 
27 INCLUDEPATH += $${OsgDir}/include
28 DEPENDPATH += $${OsgDir}/include
View Code

main.cpp

  1 #include <QApplication>
  2 
  3 #include <osg/Node>
  4 #include <osg/Group>
  5 #include <osg/Geode>
  6 #include <osg/Geometry>
  7 #include <osg/Texture2D>
  8 #include <osg/StateSet>
  9 #include <osg/PositionAttitudeTransform>
 10 #include <osgViewer/Viewer>
 11 #include <osgDB/ReadFile>
 12 #include <osgParticle/PrecipitationEffect>
 13 // 雨雪效果
 14 #include <osg/MatrixTransform>
 15 // 粒子效果
 16 #include <osgParticle/PrecipitationEffect>
 17 #include <osgParticle/Particle>
 18 #include <osgParticle/LinearInterpolator>
 19 #include <osgParticle/ParticleSystem>
 20 #include <osgParticle/RandomRateCounter>
 21 #include <osgParticle/PointPlacer>
 22 #include <osgParticle/RadialShooter>
 23 #include <osgParticle/ModularEmitter>
 24 #include <osgParticle/ParticleSystemUpdater>
 25 #include <osgParticle/ModularProgram>
 26 #include <osgUtil/Optimizer>
 27 #include <osgUtil/Simplifier>
 28 // 雾
 29 #include <osg/Fog>
 30 #include <osgDB/ReadFile>
 31 #include <osgViewer/Viewer>
 32 #include <osg/StateSet>
 33 #include <osg/StateAttribute>
 34 #include <osgViewer/ViewerEventHandlers>
 35 #include <osgWidget/ViewerEventHandlers>
 36 
 37 //创建火球（燃烧）
 38 void createFireBall(osg::MatrixTransform *smokeNode)
 39 {
 40     // 创建粒子对象，设置其属性并交由粒子系统使用。
 41     osgParticle::Particle particleTempalte;
 42     particleTempalte.setShape(osgParticle::Particle::QUAD);
 43     particleTempalte.setLifeTime(1.5); // 单位：秒
 44     particleTempalte.setSizeRange(osgParticle::rangef(3.0f, 1.0f)); // 单位：米
 45     particleTempalte.setAlphaRange(osgParticle::rangef(1, 0));
 46     particleTempalte.setColorRange(osgParticle::rangev4(osg::Vec4(1.0f, 0.2f, 0.0f, 1.0f),//0.1f,0.3f,0.4f,1.0f
 47         osg::Vec4(0.1f, 0.1f, 0.1f, 0)//0.95f,0.75f,0,1(1,1,1,1)
 48     ));
 49     particleTempalte.setPosition(osg::Vec3(0.0f, 0.0f, 0.0f));
 50     particleTempalte.setVelocity(osg::Vec3(0.0f, 0.0f, 0.0f));
 51     particleTempalte.setMass(0.1f); //单位：千克
 52     particleTempalte.setRadius(0.2f);
 53     particleTempalte.setSizeInterpolator(new osgParticle::LinearInterpolator);
 54     particleTempalte.setAlphaInterpolator(new osgParticle::LinearInterpolator);
 55     particleTempalte.setColorInterpolator(new osgParticle::LinearInterpolator);
 56     // 创建并初始化粒子系统。
 57     osgParticle::ParticleSystem *particleSystem = new osgParticle::ParticleSystem;
 58     particleSystem->setDataVariance(osg::Node::STATIC);
 59     // 设置材质，是否放射粒子，以及是否使用光照。
 60     particleSystem->setDefaultAttributes("G:\\YCThirdParty\\Osg\\data\\Images\\smoke.rgb", true, false);
 61     osg::Geode *geode = new osg::Geode;
 62     geode->addDrawable(particleSystem);
 63     smokeNode->addChild(geode);
 64     //设置为粒子系统的缺省粒子对象。
 65     particleSystem->setDefaultParticleTemplate(particleTempalte);
 66     //获取放射极中缺省计数器的句柄，调整每帧增加的新粒子数目
 67     osgParticle::RandomRateCounter *particleGenerateRate = new osgParticle::RandomRateCounter();
 68     particleGenerateRate->setRateRange(30, 50);
 69     // 每秒新生成的粒子范围
 70     particleGenerateRate->setDataVariance(osg::Node::DYNAMIC);
 71     // 自定义一个放置器，这里创建并初始化一个点放置器
 72     osgParticle::PointPlacer * particlePlacer = new osgParticle::PointPlacer;
 73     particlePlacer->setCenter(osg::Vec3(0.0f, 0.0f, 0.0f));
 74     particlePlacer->setDataVariance(osg::Node::DYNAMIC);
 75     // 自定义一个弧度发射器
 76     osgParticle::RadialShooter* particleShooter = new osgParticle::RadialShooter;
 77     // 设置发射器的属性
 78     particleShooter->setDataVariance(osg::Node::DYNAMIC);
 79     particleShooter->setThetaRange(-0.1f, 0.1f);
 80     // 弧度值，与Z 轴夹角
 81     particleShooter->setPhiRange(-0.1f, 0.1f);
 82     particleShooter->setInitialSpeedRange(5, 7.5f);//单位：米/秒
 83                                                    //创建标准放射极对象
 84     osgParticle::ModularEmitter *emitter = new osgParticle::ModularEmitter;
 85     emitter->setDataVariance(osg::Node::DYNAMIC);
 86     emitter->setCullingActive(false);
 87     // 将放射极对象与粒子系统关联。
 88     emitter->setParticleSystem(particleSystem);
 89     // 设置计数器
 90     emitter->setCounter(particleGenerateRate);
 91     // 设置放置器
 92     emitter->setPlacer(particlePlacer);
 93     // 设置发射器
 94     emitter->setShooter(particleShooter);
 95     // 把放射极添加为变换节点
 96     smokeNode->addChild(emitter);
 97     // 添加更新器，以实现每帧的粒子管理。
 98     osgParticle::ParticleSystemUpdater *particleSystemUpdater = new osgParticle::ParticleSystemUpdater;
 99     // 将更新器与粒子系统对象关联。
100     particleSystemUpdater->addParticleSystem(particleSystem);
101     // 将更新器节点添加到场景中。
102     smokeNode->addChild(particleSystemUpdater);
103     // 创建标准编程器对象并与粒子系统相关联。
104     osgParticle::ModularProgram *particleMoveProgram = new osgParticle::ModularProgram;
105     particleMoveProgram->setParticleSystem(particleSystem);
106     // 最后，将编程器添加到场景中。
107     smokeNode->addChild(particleMoveProgram);
108 }
109 
110 //创建浓烟
111 void createDarkSmoke(osg::MatrixTransform *smokeNode)
112 {
113     // 创建粒子对象，设置其属性并交由粒子系统使用。
114     osgParticle::Particle particleTempalte;
115     particleTempalte.setShape(osgParticle::Particle::QUAD);
116     particleTempalte.setLifeTime(10); // 单位：秒
117     particleTempalte.setSizeRange(osgParticle::rangef(1.0f, 12.0f)); // 单位：米
118     particleTempalte.setAlphaRange(osgParticle::rangef(1, 0));
119     particleTempalte.setColorRange(osgParticle::rangev4(
120         osg::Vec4(0.0f, 0.0f, 0.0f, 0.5f),//(0.1f,0.1f,0.1f,0.5f)
121         osg::Vec4(0.5f, 0.5f, 0.5f, 1.5f)//0.95f,0.75f,0,1
122     ));
123     particleTempalte.setPosition(osg::Vec3(0.0f, 0.0f, 0.0f));
124     particleTempalte.setVelocity(osg::Vec3(0.0f, 0.0f, 0.0f));
125     particleTempalte.setMass(0.1f); //单位：千克
126     particleTempalte.setRadius(0.2f);
127     particleTempalte.setSizeInterpolator(new osgParticle::LinearInterpolator);
128     particleTempalte.setAlphaInterpolator(new osgParticle::LinearInterpolator);
129     particleTempalte.setColorInterpolator(new osgParticle::LinearInterpolator);
130     // 创建并初始化粒子系统。
131     osgParticle::ParticleSystem *particleSystem = new osgParticle::ParticleSystem;
132     particleSystem->setDataVariance(osg::Node::STATIC);
133     // 设置材质，是否放射粒子，以及是否使用光照。
134     particleSystem->setDefaultAttributes("G:\\YCThirdParty\\Osg\\data\\Images\\smoke.rgb", false, false);
135     osg::Geode *geode = new osg::Geode;
136     geode->addDrawable(particleSystem);
137     smokeNode->addChild(geode);
138     //设置为粒子系统的缺省粒子对象。
139     particleSystem->setDefaultParticleTemplate(particleTempalte);
140     //获取放射极中缺省计数器的句柄，调整每帧增加的新粒
141     //子数目
142     osgParticle::RandomRateCounter *particleGenerateRate = new osgParticle::RandomRateCounter();
143     particleGenerateRate->setRateRange(30, 50);
144     // 每秒新生成的粒子范围
145     particleGenerateRate->setDataVariance(osg::Node::DYNAMIC);
146     // 自定义一个放置器，这里我们创建并初始化一个点放置器
147     osgParticle::PointPlacer * particlePlacer = new osgParticle::PointPlacer;
148     particlePlacer->setCenter(osg::Vec3(0.0f, 0.0f, 0.05f));
149     particlePlacer->setDataVariance(osg::Node::DYNAMIC);
150     // 自定义一个弧度发射器
151     osgParticle::RadialShooter* particleShooter = new osgParticle::RadialShooter;
152     // 设置发射器的属性
153     particleShooter->setDataVariance(osg::Node::DYNAMIC);
154     particleShooter->setThetaRange(-0.1f, 0.1f);
155     // 弧度值，与Z 轴夹角0.392699f
156     particleShooter->setPhiRange(-0.1f, 0.1f);
157     particleShooter->setInitialSpeedRange(10, 15);
158     //单位：米/秒
159     //创建标准放射极对象
160     osgParticle::ModularEmitter *emitter = new osgParticle::
161         ModularEmitter;
162     emitter->setDataVariance(osg::Node::DYNAMIC);
163     emitter->setCullingActive(false);
164     // 将放射极对象与粒子系统关联。
165     emitter->setParticleSystem(particleSystem);
166     // 设置计数器
167     emitter->setCounter(particleGenerateRate);
168     // 设置放置器
169     emitter->setPlacer(particlePlacer);
170     // 设置发射器
171     emitter->setShooter(particleShooter);
172     // 把放射极添加为变换节点
173     smokeNode->addChild(emitter);
174     // 添加更新器，以实现每帧的粒子管理。
175     osgParticle::ParticleSystemUpdater *particleSystemUpdater = new osgParticle::ParticleSystemUpdater;
176     // 将更新器与粒子系统对象关联。
177     particleSystemUpdater->addParticleSystem(particleSystem);
178     // 将更新器节点添加到场景中。
179     smokeNode->addChild(particleSystemUpdater);
180     osgParticle::ModularProgram *particleMoveProgram = new osgParticle::ModularProgram;
181     particleMoveProgram->setParticleSystem(particleSystem);
182     // 最后，将编程器添加到场景中。
183     smokeNode->addChild(particleMoveProgram);
184 }
185 
186 int main(int argc, char *argv[])
187 {
188     osg::Group* root = new osg::Group();
189     // ------------------粒子效果-----------------------
190     osg::MatrixTransform * flightTransform = new osg::MatrixTransform();
191     root ->addChild(flightTransform);
192     //引擎烟雾
193     osg::MatrixTransform* fireballAndSmoke = new osg::MatrixTransform();
194     createFireBall(fireballAndSmoke);
195 
196     fireballAndSmoke->setMatrix(osg::Matrix::rotate(-osg::PI / 2, 1, 0, 0)*osg::Matrix::translate(-8, -10, -3));
197     flightTransform->addChild(fireballAndSmoke);
198     createDarkSmoke(fireballAndSmoke);
199 
200     osgUtil::Simplifier simplifier(0.3f, 4.0f);
201     osgUtil::Optimizer optimzer;
202 
203     optimzer.optimize(root);
204     // ------------------设置窗口------------------
205     //最后，设置视窗类并进入仿真循环。
206     osgViewer::Viewer viewer;
207     //设置图形环境特性
208     osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits();
209     traits->x = 100;
210     traits->y = 200;
211     traits->width = 600;
212     traits->height = 500;
213     traits->windowDecoration = true;
214     traits->doubleBuffer = true;
215     traits->sharedContext = 0;
216     //创建图形环境特性
217     osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
218     if (gc.valid())
219     {
220         osg::notify(osg::INFO)<<"  GraphicsWindow has been created successfully."<<std::endl;
221 
222         //清除窗口颜色及清除颜色和深度缓冲
223         gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
224         gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
225     }
226     else
227     {
228         osg::notify(osg::NOTICE)<<"  GraphicsWindow has not been created successfully."<<std::endl;
229     }
230     //设置视口
231     viewer.getCamera()->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
232     //设置图形环境
233     viewer.getCamera()->setGraphicsContext(gc.get());
234     viewer.setSceneData( root );
235     return viewer.run();
236 }
View Code

 

posted on 2022-02-10 14:11  疯狂delphi  阅读(161)  评论(0)  编辑  收藏  举报

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