[osg-users] question about drawing/modifying lines in OpenSceneGraph

[Nguyen Tien Dat]

Dear all,
I draw a line as following:

        osg::Geometry* geo = new osg::Geometry();
	// define some vertices
	osg::Vec3Array* v = new osg::Vec3Array;
	v->push_back(start);
	v->push_back(end);

	// draw lines
	geo->setVertexArray(v);

	geo->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES, 0, 2, 1));

	geode->addDrawable(geo);

But the line is hardly to be seen because it's too thin and has white
color. So my question is:
- Can I change the color of the line? If yes, please tell me how.
- Can I change the thickness of the line? If yes, pleas tell me how.

Thanks,
Dat