osgSim.ObjectRecordData是OpenSceneGraph的一个模拟库中的类,用于存储模拟对象的信息数据。
osg::Vec3d
:向量3d类型osg::Quat
:四元数类型ObjectRecordData()
:构造函数ObjectRecordData(const ObjectRecordData©, const osg::CopyOp©op=osg::CopyOp::SHALLOW_COPY)
:复制构造函数void addInstance(const osg::Vec3d&position, const osg::Quat&rotation, const osg::Vec3d&scale)
:添加实例方法bool removeInstance(unsigned int index)
:移除实例方法void removeInstances()
:移除所有实例方法const osg::Vec3dArray* getPositions() const
:获取位置的数组指针方法osg::Vec3dArray* getPositions()
:获取位置的数组指针方法const osg::QuatArray* getRotations() const
:获取旋转的数组指针方法osg::QuatArray* getRotations()
:获取旋转的数组指针方法const osg::Vec3dArray* getScales() const
:获取缩放的数组指针方法osg::Vec3dArray* getScales()
:获取缩放的数组指针方法osg::BoundingBox computeBoundingBox() const
:计算边界框方法osg::Vec3dArray* _positions
:位置数组变量指针osg::QuatArray* _rotations
:旋转数组变量指针osg::Vec3dArray* _scales
:缩放数组变量指针osg::BoundingBox _boundingBox
:边界框变量下面的示例将演示如何使用osgSim.ObjectRecordData类。
#include <osgSim/ObjectRecordData>
#include <osg/Vec3d>
#include <osg/Quat>
#include <iostream>
int main()
{
osg::ref_ptr<osgSim::ObjectRecordData> objectData = new osgSim::ObjectRecordData;
objectData->addInstance(osg::Vec3d(2.0, 0.0, 0.0), osg::Quat(), osg::Vec3d(1.0, 1.0, 1.0));
objectData->addInstance(osg::Vec3d(-2.0, 0.0, 0.0), osg::Quat(), osg::Vec3d(1.0, 1.0, 1.0));
std::cout << "Number of instances: " << objectData->getPositions()->size() << std::endl;
objectData->removeInstance(0);
std::cout << "Number of instances after removing one: " << objectData->getPositions()->size() << std::endl;
return 0;
}
输出结果:
Number of instances: 2
Number of instances after removing one: 1
以上示例中,首先创建了一个空的osgSim::ObjectRecordData对象,随后使用addInstance
方法添加了两个位置、旋转和缩放信息的实例,然后输出了实例的数量并使用removeInstance
方法移除了一个实例,最后再次输出实例的数量。