前言

  本篇非常麻烦，博主用QtCreator作为IDE，因为Osg3.6.3放弃对osgQt的支持，集成起来比较繁琐。

前提

  基于前面三篇的基础上，才可以进行本篇。

Demo演示：Qt5.15.2+OSG3.6.3+OsgEarth3.1的QtCreator下的msvc2019x64版本

  

Demo运行程序下载

OsgQt下载

osgQt编译

步骤一：下载解压

  

步骤二：CMake配置

  

步骤三：CMake配置添加osg环境

  

步骤四：CMake配置添加Qt环境  

  

步骤五：CMake修改CMakeLists文件内容：

     还是出现错误：      检查，并未发现错误      继续深入   过了，继续配置：   

     填入其他Qt路径：      

步骤六：配置通过

  

步骤七：生成成功

  

步骤八：打开工程，进行编译

     编译各种问，尝试过多次后放弃，看其他博客是可以的。      

模块化

  

配置文件

OsgEarthWidget.pri

INCLUDEPATH += $$PWD
DEPENDPATH += $$PWD

QT += opengl

FORMS += \
    $$PWD/OsgWidget.ui

HEADERS += \
    $$PWD/OsgViewerWidget.h \
    $$PWD/OsgWidget.h \
    $$PWD/define.h \
    $$PWD/osgQt/include/osgQOpenGL/Export.h

SOURCES += \
    $$PWD/OsgViewerWidget.cpp \
    $$PWD/OsgWidget.cpp \
    $$PWD/define.cpp

# osg
INCLUDEPATH += $$PWD/osg3.6.3-vs2019/include
DEPENDPATH += $$PWD/osg3.6.3-vs2019/include

LIBS += -L$$PWD/osg3.6.3-vs2019/lib
LIBS += -lOpenThreads \
        -losg \
        -losgAnimation \
        -losgDB \
        -losgFX \
        -losgGA \
        -losgManipulator \
        -losgParticle \
        -losgPresentation \
        -losgShadow \
        -losgText \
        -losgUI \
        -losgUtil \
        -losgViewer \
        -losgVolume \
        -losgWidget \
#        -losgQt \
        -losgSim \
        -losgTerrain

# osgQt
INCLUDEPATH += $$PWD/osgQt/include
DEPENDPATH += $$PWD/osgQt/include

HEADERS += \
    $$PWD/osgQt/include/osgQOpenGL/CullVisitorEx \
    $$PWD/osgQt/include/osgQOpenGL/GraphicsWindowEx \
    $$PWD/osgQt/include/osgQOpenGL/OSGRenderer \
    $$PWD/osgQt/include/osgQOpenGL/RenderStageEx \
    $$PWD/osgQt/include/osgQOpenGL/StateEx \
    $$PWD/osgQt/include/osgQOpenGL/osgQOpenGLWidget \
    $$PWD/osgQt/include/osgQOpenGL/osgQOpenGLWindow

SOURCES += \
    $$PWD/osgQt/include/osgQOpenGL/CullVisitorEx.cpp \
    $$PWD/osgQt/include/osgQOpenGL/GraphicsWindowEx.cpp \
    $$PWD/osgQt/include/osgQOpenGL/OSGRenderer.cpp \
    $$PWD/osgQt/include/osgQOpenGL/RenderStageEx.cpp \
    $$PWD/osgQt/include/osgQOpenGL/StateEx.cpp \
    $$PWD/osgQt/include/osgQOpenGL/osgQOpenGLWidget.cpp \
    $$PWD/osgQt/include/osgQOpenGL/osgQOpenGLWindow.cpp


# osgEarth
INCLUDEPATH += $$PWD/osgearth3.1-vs2019/include

LIBS += -L$$PWD/osgearth3.1-vs2019/lib
LIBS += -losgEarth

Demo源码

osg::ref_ptr<osg::Node> OsgWidget::getEarthSphiere()
{
    osg::ref_ptr<osg::Group> pGroup = new osg::Group;

    osgEarth::initialize();

    const char* styles_css =
    R"(
        p {
            altitude-clamping: terrain-drape;
            render-backface-culling: false;
        }
        p1: p{ fill: #ff3f3f9f; }
        p2: p{ fill: #3fff3f9f; }
        p3: p{ fill: #3f3fff9f; }
        p4: p{ fill: #ff3fff9f; }
        p5: p{ fill: #ffff3f9f; }
    )";

    const char* script_source =
    R"(
        function getStyleClass()
        {
            // Exclude any countries beginning with the letter A:
            if ( feature.properties.name.charAt(0) === 'A' )
                return null;

            // If it starts with the letter C, return an inline style:
            if ( feature.properties.name.charAt(0) == 'C' )
                return '{ _fill: #ffc838; stroke: #8f8838; extrusion-height: 250000; }';

            // Otherwise, return a named style based on some calculations:
            var pop = parseFloat(feature.properties.pop);
            if      ( pop <= 14045470 )  return "p1";
            else if ( pop <= 43410900 )  return "p2";
            else if ( pop <= 97228750 )  return "p3";
            else if ( pop <= 258833000 ) return "p4";
            else                         return "p5";
        }
    )";


    osg::ref_ptr<Map> map = new Map();

    GDALImageLayer* basemap = new GDALImageLayer();
    basemap->setURL("world.tif");
    map->addLayer(basemap);

    // Next we add a layer to provide the feature data.
    OGRFeatureSource* features = new OGRFeatureSource();
    features->setName("vector-data");
    features->setURL("world.shp");
    map->addLayer(features);

    Style style;

    LineSymbol* ls = style.getOrCreateSymbol<LineSymbol>();
    ls->stroke()->color() = Color::Yellow;
    ls->stroke()->width() = 2.0f;
    ls->tessellationSize()->set(100, Units::KILOMETERS);

    FeatureModelLayer* layer = new FeatureModelLayer();
    layer->setFeatureSource(features);

    StyleSheet* styleSheet = new StyleSheet();
    styleSheet->addStyle(style);

    layer->setStyleSheet(styleSheet);
    map->addLayer(layer);


    LayerVector layers;
    map->getLayers(layers);
    for (LayerVector::const_iterator i = layers.begin(); i != layers.end(); ++i)
    {
        Layer* layer = i->get();
        if (layer->getStatus().isError() &&
            layer->getEnabled())
        {
            OE_WARN << layer->getName() << " : " << layer->getStatus().toString() << std::endl;
        }
    }

    MapNode* mapNode = new MapNode(map.get());

    _pViewer->setCameraManipulator(new EarthManipulator());

    pGroup->addChild(mapNode);

    return pGroup.get();
}

工程模板

  osgEarthDemo_工程模板_v1.0.0_搭建好Qt+OSG+EARTH环境显示地球_QtCreaotr下的msvc2019x64版本.rar