C ++ / CLI osg:创建数组元素osg :: ref_ptr <osg :: vec3array> </osg :: vec3array>

时间:2011-07-14 04:07:00

标签: c++-cli openscenegraph

现在我制作osg :: Vec3类型Line:

public  osg::ref_ptr<osg::Vec3Array> _pointArray;

loadVec3();

CreateLine(_pointArray);

void loadVec3()
{
    //read cordinate from csv file par 1 line`

    while ((line = streamReader->ReadLine()) != nullptr)
    {
        //divide
        array<String^>^ values = line->Split(',');

        //cordinate value x,y,z
        double x = (values->Length > 0) ? double::Parse(values[0]) : 0.0;
        double y = (values->Length > 1) ? double::Parse(values[1]) : 0.0;
        double z = (values->Length > 2) ? double::Parse(values[2]) : 0.0;
        osg::Vec3 pos(x, y, z);

        _pointArray->push_back(pos);
        count++;
    }
}

void CreateLine(osg::ref_ptr<osg::Vec3Array>& v2)
{
    // Create an object to store geometry in.
    osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;

    // Create an array of four vertices.
    osg::ref_ptr<osg::Vec3Array> v = v2;
    geom->setVertexArray( v.get() );

    osg::ref_ptr<osg::Geode> geode = new osg::Geode;

    geode->addDrawable( geom.get() );
}

这一次,我必须从同一个文件中画出2行 写入文件的值是不可见的中心线,
Y坐标可见线与中心线的间隙相同(+/- 190.0)。

我将代码更改为以下内容,但是我收到错误:

  

错误C2440

如何解决此错误?

public  osg::ref_ptr<osg::Vec3Array> _pointArrayL;
public  osg::ref_ptr<osg::Vec3Array> _pointArrayR;
public  std::list< osg::ref_ptr<osg::Vec3Array>> _pointArrayList;

void loadVec3()
{
    //read cordinate from csv file par 1 line

    while ((line = streamReader->ReadLine()) != nullptr)
    {
        //divide
        array<String^>^ values = line->Split(',');

        //cordinate value x,y,z
        double x1 = (values->Length > 0) ? double::Parse(values[0]) : 0.0;
        double y1 = (values->Length > 1) ? double::Parse(values[1] + 190.0) : 0.0;
        double z1 = (values->Length > 2) ? double::Parse(values[2]) : 0.0;
        osg::Vec3 posL(x1, y1, z1);

        double x2 = (values->Length > 0) ? double::Parse(values[0]) : 0.0;
        double y2 = (values->Length > 1) ? double::Parse(values[1]) -190.0 = : 0.0;
        double z2 = (values->Length > 2) ? double::Parse(values[2]) : 0.0;
        osg::Vec3 posR(x2, y2, z2);

        count++;
    }

    _pointList.push_back(
    _pointList.push_back(posR);
}

void CreateLine(std::list<osg::ref_ptr<osg::Vec3Array>> v2)
{
    // Create an object to store geometry in.
    osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;

    // Create an array of four vertices.
    std::list<osg::ref_ptr<osg::Vec3Array>>::iterator it = v2.begin();
    while( it != v2.end() )  // stil end of list
    {
        osg::ref_ptr<osg::Vec3Array> v = *v2;<<<<<<<<<<<<<<<<<<<<<<<<<**ERROR**
        geom->setVertexArray( v.get() );
        osg::ref_ptr<osg::Geode> geode = new osg::Geode;

        geode->addDrawable( geom.get() );
        ++it;
    }
}

1 个答案:

答案 0 :(得分:0)

我不认为* v2会有效; v2是一个std :: list对象,所以取其地址没有意义。也许你的意思是:

osg::ref_ptr<osg::Vec3Array>* v = &v2;

虽然看着你的代码,但我不确定v的重点是什么。