Adding SoText2 to positions of SoVertexProperty

Hi there,


My program must show a set of points,
and every point must have a discriptive string.

The coordinates for the points are in a
SoVertexProperty-Node.

I tried to use the same coordinates for the
SoText2, but the result is not like I
have expected.

I would be very happy, if someone
can help me to isolate my error,
or show me a different way to reach
my goal.

By the way I have to use
Coin3D [Coin-1.0.2]
SoQt   [SoQt-0.10.0]
Qt     [non-commercial Qt version 2.3.0]
under Windows98Se.


here you can look at screenshots:

http://home.tu-clausthal.de/~ifrh/zoom_out.gif
http://home.tu-clausthal.de/~ifrh/zoom_in.gif



here is a code fragment:

void PointSetHandler::set2DText (std::string text, double x, double y, 
double z)
{
   // add the Text for the Point to the Scenegraph

	const char * temp3= text.c_str();
	SoText2 *PktText = new SoText2;
	PktText->string= temp3;
	mySeparator->addChild(PktText);

	SoTranslation *PktTextTranslate = new SoTranslation;	
	PktTextTranslate->translation.setValue(x,y,z);
	mySeparator->addChild(PktTextTranslate);
}




In the main program I create the points like:
Note that lsgPoints is an instance of the class PointSetHandler.

[...]
	// copy all points into a VertexProperty node
	SoVertexProperty* myLsgPoints = new SoVertexProperty();
	myLsgPoints->vertex.setNum(Geo->getgeoLsgPunkte()->size());

	for (int i=0; i<Geo->getgeoLsgPunkte()->size(); i++)
	{
		myLsgPoints->vertex.set1Value(i,
		(*(Geo->getgeoLsgPunkte()))[i].getXY_Koord()->x,
		(*(Geo->getgeoLsgPunkte()))[i].getXY_Koord()->y,		
                 (*(Geo->getgeoLsgPunkte()))[i].getXY_Koord()->z);
	}

	// set the lsgPoints node
	lsgPoints->setVertexProperty(myLsgPoints);
	lsgPoints->setNum(Geo->getgeoLsgPunkte()->size());
	lsgPoints->setColor(1.0,0.0,0.0);
	lsgPoints->setPointWidth(6);	

	for (int i=0; i<Geo->getgeoLsgPunkte()->size(); i++)
	{

		float x, y, z;
		myLsgPoints->vertex[i].getValue(x, y, z);
                 string AnzeigeText= 
(*(*(AuswerterPtr->getDatensaetze()))[DSNr].getLoesungspunktPtr())[i].getName();
		lsgPoints->set2DText(AnzeigeText, x, y, z);
	}
[...]

Thanks for your help.
Greetings
Robert Hartmann