[原][osgearth]设置OE的高程，高度场的数据。修改设置高度值

    for( unsigned int row=; row < hf->getNumRows(); ++row )
    {
      for( unsigned int col=; col < hf->getNumColumns(); ++col )
      {
        float val = hf->getHeight(col, row);
        if ( !isNoData( val ) ) {
          continue;
        }
        if ( col >  )
          val = hf->getHeight(col-,row);
        else if ( col <= hf->getNumColumns()- )
          val = hf->getHeight(col+,row);

        if ( isNoData( val ) )
        {
          if ( row >  )
            val = hf->getHeight(col, row-);
          else if ( row < hf->getNumRows()- )
            val = hf->getHeight(col, row+);
        }

        if ( isNoData( val ) )
        {
          val = _nodata_value;
        }

        hf->setHeight( col, row, val );
      }
    }

这是从osgearth的ImageToHeightFieldConverter.cpp文件的

osg::HeightField* ImageToHeightFieldConverter::convert(const osg::Image* image ) 函数中找到的。

这里可以看出HeightField高度场中

osg::ref_ptr<osg::FloatArray>   _heights;

的组织方式

HeightField这个类的定义在Shape.cpp文件中！