Osg-Osg海军教程源代码之金子塔的绘制(Qt5.14.2+osgEarht3.6.5+win10)-No1-DrawGoldTower

相关资料：

 https://blog.csdn.net/u012130706/article/details/76044498     【OSG】将显示的图形窗口化

实例代码：

.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 
 14 // 雨雪效果
 15 #include <osg/MatrixTransform>
 16 // 粒子效果
 17 #include <osgParticle/PrecipitationEffect>
 18 #include <osgParticle/Particle>
 19 #include <osgParticle/LinearInterpolator>
 20 #include <osgParticle/ParticleSystem>
 21 #include <osgParticle/RandomRateCounter>
 22 #include <osgParticle/PointPlacer>
 23 #include <osgParticle/RadialShooter>
 24 #include <osgParticle/ModularEmitter>
 25 #include <osgParticle/ParticleSystemUpdater>
 26 #include <osgParticle/ModularProgram>
 27 #include <osgUtil/Optimizer>
 28 #include <osgUtil/Simplifier>
 29 // 雾
 30 #include <osg/Fog>
 31 #include <osgDB/ReadFile>
 32 #include <osgViewer/Viewer>
 33 #include <osg/StateSet>
 34 #include <osg/StateAttribute>
 35 #include <osgViewer/ViewerEventHandlers>
 36 #include <osgWidget/ViewerEventHandlers>
 37 
 38 int main(int argc, char *argv[])
 39 {
 40     osg::Group* root = new osg::Group();
 41     osg::Geode* pyramidGeode = new osg::Geode();
 42     osg::Geometry* pyramidGeometry = new osg::Geometry();
 43     pyramidGeode->addDrawable(pyramidGeometry);
 44     root->addChild(pyramidGeode);
 45     osg::Vec3Array* pyramidVertices = new osg::Vec3Array;
 46     pyramidVertices->push_back( osg::Vec3( 0, 0, 0) ); // 左前
 47     pyramidVertices->push_back( osg::Vec3(10, 0, 0) ); // 右前
 48     pyramidVertices->push_back( osg::Vec3(10,10, 0) ); // 右后
 49     pyramidVertices->push_back( osg::Vec3( 0,10, 0) ); // 左后
 50     pyramidVertices->push_back( osg::Vec3( 5, 5,10) ); // 塔尖
 51     pyramidGeometry->setVertexArray( pyramidVertices );
 52     osg::DrawElementsUInt* pyramidBase =
 53     new osg::DrawElementsUInt(osg::PrimitiveSet::QUADS, 0);
 54     pyramidBase->push_back(3);
 55     pyramidBase->push_back(2);
 56     pyramidBase->push_back(1);
 57     pyramidBase->push_back(0);
 58     pyramidGeometry->addPrimitiveSet(pyramidBase);
 59     //重复这一过程，添加金字塔的每个面。再次注意，顶点是以逆时针为顺序添加的。
 60     osg::DrawElementsUInt* pyramidFaceOne = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
 61     pyramidFaceOne->push_back(0);
 62     pyramidFaceOne->push_back(1);
 63     pyramidFaceOne->push_back(4);
 64     pyramidGeometry->addPrimitiveSet(pyramidFaceOne);
 65 
 66     osg::DrawElementsUInt* pyramidFaceTwo =
 67     new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
 68     pyramidFaceTwo->push_back(1);
 69     pyramidFaceTwo->push_back(2);
 70     pyramidFaceTwo->push_back(4);
 71     pyramidGeometry->addPrimitiveSet(pyramidFaceTwo);
 72 
 73     osg::DrawElementsUInt* pyramidFaceThree = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
 74     pyramidFaceThree->push_back(2);
 75     pyramidFaceThree->push_back(3);
 76     pyramidFaceThree->push_back(4);
 77     pyramidGeometry->addPrimitiveSet(pyramidFaceThree);
 78 
 79     osg::DrawElementsUInt* pyramidFaceFour =
 80     new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
 81     pyramidFaceFour->push_back(3);
 82     pyramidFaceFour->push_back(0);
 83     pyramidFaceFour->push_back(4);
 84     pyramidGeometry->addPrimitiveSet(pyramidFaceFour);
 85     //定义一个Vec4的数组，用于保存颜色值。
 86     osg::Vec4Array* colors = new osg::Vec4Array;
 87     colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //索引0 红色
 88     colors->push_back(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f) ); //索引1 绿色
 89     colors->push_back(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f) ); //索引2 蓝色
 90     colors->push_back(osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f) ); //索引3 白色
 91     osg::TemplateIndexArray
 92     <unsigned int, osg::Array::UIntArrayType,4,4> *colorIndexArray;
 93     colorIndexArray =
 94     new osg::TemplateIndexArray<unsigned int, osg::Array::UIntArrayType,4,4>;
 95     colorIndexArray->push_back(0); // vertex 0 assigned color array element 0
 96     colorIndexArray->push_back(1); // vertex 1 assigned color array element 1
 97     colorIndexArray->push_back(2); // vertex 2 assigned color array element 2
 98     colorIndexArray->push_back(3); // vertex 3 assigned color array element 3
 99     colorIndexArray->push_back(0); // vertex 4 assigned color array element 0
100     pyramidGeometry->setColorArray(colors);
101     //   pyramidGeometry->setColorIndices(colorIndexArray);
102     pyramidGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
103 
104     osg::Vec2Array* texcoords = new osg::Vec2Array(5);
105     (*texcoords)[0].set(0.00f,0.0f);
106     (*texcoords)[1].set(0.25f,0.0f);
107     (*texcoords)[2].set(0.50f,0.0f);
108     (*texcoords)[3].set(0.75f,0.0f);
109     (*texcoords)[4].set(0.50f,1.0f);
110     pyramidGeometry->setTexCoordArray(0,texcoords);
111     //初始化位置变换节点
112     osg::PositionAttitudeTransform* pyramidTwoXForm =new osg::PositionAttitudeTransform();
113 
114     //使用osg::Group的addChild方法，将位置变换节点添加到根节点的子节点上，并将金字塔节点作为变换节点的子节点
115     root->addChild(pyramidTwoXForm);
116     pyramidTwoXForm->addChild(pyramidGeode);
117 
118     // 初始化一个Vec3实例，用于改变模型在场景中的位置
119     osg::Vec3 pyramidTwoPosition(15,0,0);
120     pyramidTwoXForm->setPosition( pyramidTwoPosition );
121 
122     //最后，设置视窗类并进入仿真循环。
123     osgViewer::Viewer viewer;
124     //设置图形环境特性
125     osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits();
126     traits->x = 100;
127     traits->y = 200;
128     traits->width = 600;
129     traits->height = 500;
130     traits->windowDecoration = true;
131     traits->doubleBuffer = true;
132     traits->sharedContext = 0;
133     //创建图形环境特性
134     osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
135     if (gc.valid())
136     {
137         osg::notify(osg::INFO)<<"  GraphicsWindow has been created successfully."<<std::endl;
138 
139         //清除窗口颜色及清除颜色和深度缓冲
140         gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
141         gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
142     }
143     else
144     {
145         osg::notify(osg::NOTICE)<<"  GraphicsWindow has not been created successfully."<<std::endl;
146     }
147     //设置视口
148     viewer.getCamera()->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
149     //设置图形环境
150     viewer.getCamera()->setGraphicsContext(gc.get());
151     viewer.setSceneData( root );
152     return viewer.run();
153 }
View Code

 

 

 

posted on 2021-11-03 16:26  疯狂delphi  阅读(145)  评论(0)    收藏  举报

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