Hi all,
I am trying to display a point cloud in osg and having some problems. I display
the same dataset in an OpenGL based application and it works fine. But when I
display it in osg I just see all the points displayed across a line.
Here is my code for converting the points stored in
vector<Pt> m_list;
where Pt has three float and 3 unsigned integers for storing color value of
each point.
Code:
osg::Geode * formPointCloud()
{
osg::Geode* cloudGeode = new osg::Geode();
osg::Geometry* cloudGeometry = new osg::Geometry();
osg::Vec4Array* cloudVertices = new osg::Vec4Array;
for ( int i = 0 ; i < m_list.size() ; i++ )
cloudVertices->push_back( osg::Vec4d(m_list[i].fX,
m_list[i].fY, m_list[i].fZ, 1.0f) );
cloudGeometry->setVertexArray( cloudVertices );
cloudGeometry->addPrimitiveSet(new
osg::DrawArrays(osg::PrimitiveSet::POINTS, 0, m_list.size()));
osg::Vec4Array* colors = new osg::Vec4Array;
for ( int i = 0 ; i < m_list.size() ; i++ )
colors->push_back(osg::Vec4f (m_list[i].uR/255.0f,
m_list[i].uG/255.0f, m_list[i].uB/255.0f, 1.0f) );
osg::TemplateIndexArray
<unsigned int, osg::Array::UIntArrayType,4,4>
*colorIndexArray;
colorIndexArray = new osg::TemplateIndexArray<unsigned int,
osg::Array::UIntArrayType,4,4>;
for ( int i = 0 ; i < m_list.size() ; i++ )
colorIndexArray->push_back(i);
cloudGeometry->setColorArray(colors);
cloudGeometry->setColorIndices(colorIndexArray);
cloudGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
cloudGeode->addDrawable(cloudGeometry);
return cloudGeode;
}
//////////// the code in the main is ////////////////////
PointCloud ptcloud;
ptcloud.readPointCloud(str);
osg::Geode * ptrCloudGeode = ptcloud.formPointCloud();
root->addChild(ptrCloudGeode);
viewer.setSceneData( root );
///////////////////////////////////////////////////////////
I would really appreciate if someone could help me with this.
Thanks,
Omar
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=7378#7378
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