OsgOsg实例牛对象平移效果(Qt5.14.2+osgEarht3.6.5+win10)No7translation

相关资料：

https://www.cnblogs.com/ylwn817/articles/1973396.html     osg矩阵变换节点-----平移旋转缩放

注意：

osg方向如左图所示，x轴表示屏幕水平方向，y轴表示和屏幕垂直方向即屏幕里面方向，z轴表示屏幕垂直方向，每个箭头指向表示正方向 

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>

int main(int argc, char *argv[])
{
    osgViewer::Viewer viewer;
    osg::ref_ptr<osg::Group> root=new osg::Group();
    osg::ref_ptr<osg::Node> osgcool=osgDB::readNodeFile("D:\\osgFiles\\cow.osg");

    osg::ref_ptr<osg::MatrixTransform> trans=new osg::MatrixTransform();
    // 就是用来平移物体，这个表示象Z轴正方向平移也就是屏幕正上方。
    trans->setMatrix(osg::Matrix::translate(0,0,20));
    trans->addChild(osgcool.get());

    root->addChild(osgcool.get());
    root->addChild(trans.get());

    viewer.setUpViewInWindow(50,50,500,400);
    viewer.setSceneData(root.get());
    viewer.realize();
    viewer.run();
}