Hi Omar,
it looks like you're using a Vec4 and Vec4Array instead of a Vec3 and
Vec3Array for the 3D point positions (or Vec3d and Vec3dArray for
explicit doubles).
Could you try changing that?
osg::Vec3Array* cloudVertices = new osg::Vec3Array;
for ( int i = 0 ; i < m_list.size() ; i++ )
cloudVertices->push_back( osg::Vec3d(m_list[i].fX, m_list[i].fY,
m_list[i].fZ) );
Gerwin
On Wed, Feb 25, 2009 at 5:24 PM, Omar <[email protected]> wrote:
> 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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