Hi Max, you can disable lighting for the pointclouds via StateSet.
Regards.
2008/10/20 Max Pfingsthorn <[EMAIL PROTECTED]>
> Dear List,
>
> I want to render a point cloud (say from a 3D scanner). I use the
> following code:
>
> (pc is a PointCloud which contains three vectors of floats, aScene is a
> osg::Group)
>
> ---------------------------------------------------------------
> osg::PositionAttitudeTransform* trans = new
> osg::PositionAttitudeTransform();
> osg::Geometry* geo = new osg::Geometry;
> osg::Geode* node = new osg::Geode;
>
> node->addDrawable( geo );
> trans->addChild( node );
>
> trans->setPosition( osg::Vec3d( x, y, z ) );
> trans->setAttitude( osg::Quat( yaw, osg::Vec3d(0,0,1), pitch,
> osg::Vec3d(0,1,0), roll, osg::Vec3d(1,0,0) ) );
>
> const vector<float>& vx = pc.getX();
> const vector<float>& vy = pc.getY();
> const vector<float>& vz = pc.getZ();
>
> osg::Vec3Array* points = new osg::Vec3Array;
> for( unsigned int i=0; i < vx.size(); i++ ) {
> points->push_back( osg::Vec3( vx[i], vy[i], vz[i] ) );
> }
> geo->setVertexArray( points );
>
> osg::DrawElementsUInt* draw = new
> osg::DrawElementsUInt(osg::PrimitiveSet::POINTS, 0);
> for( unsigned int i=0; i < vx.size(); i++ ) {
> draw->push_back( i );
> }
> geo->addPrimitiveSet( draw );
>
> osg::Vec4Array* colors = new osg::Vec4Array;
> colors->push_back(osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f) );
>
> geo->setColorArray(colors);
> geo->setColorBinding(osg::Geometry::BIND_OVERALL);
>
> aScene->addChild( trans );
> ---------------------------------------------------------------
>
> It works, but for some reason, the points seem to be less visible from
> some directions than from others (i.e. I see them from the front but not
> from the back). Is this by design? How do I make sure the points can be
> seen from all sides?
>
> Thanks for the help!
> Max Pfingsthorn
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
--
Jordi Torres Fabra
Instituto de Automática e Informática Industrial
http://www.ai2.upv.es
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