[vtkusers] need urgent help (picking with vtkPropPicker)

[Jan-Gerrit Drexhage]

Hello,

i have a problem to get the exact pointcoordinates from picking from a
glyph/Spike and time is running out for me.

public class SpikeMaker{

    vtkSphereSource mySphereGlyph;
    vtkConeSource myConeGlyph;
    vtkCylinderSource myCylinderGlyph;

    vtkGlyph3D myGlyph;
    vtkPoints mySpikePoints;
    vtkPolyDataMapper mySpikeMapper;
    vtkPolyData mySpiker;
    vtkActor mySpikeActor;
    vtkActor myGlypher;
    vtkPolyDataMapper myGlyphMapper;
    vtkPolyDataMapper mySphereGlyphMapper, myConeGlyphMapper,
myCylinderGlyphMapper;
    vtkProperty mySphereProps, myConeProps, myCylinderProps;
    VTKmyFrame vmf;
    vtkProperty prop;
    double rad = 0.04;

 public SpikeMaker(double[][] give){
      setCubeGlyph(give);
  }

protected void setCubeGlyph(double[][] cylinder){
    myGlyph = new vtkGlyph3D();
    mySpikePoints = new vtkPoints();
    mySpikeMapper = new vtkPolyDataMapper();
    mySpiker = new vtkPolyData();
    for (int k = 0; k < cylinder.length; k++) {
      mySpikePoints.InsertPoint(k, cylinder[k]);
    };
    mySpiker.SetPoints(mySpikePoints);
    mySpikeMapper = new vtkPolyDataMapper();
    mySpikeMapper.SetInput(mySpiker);
    mySpikeActor = new vtkActor();
    mySpikeActor.SetMapper(mySpikeMapper);
    myGlypher = new vtkActor();
    myGlyphMapper = new vtkPolyDataMapper();
    myCylinderGlyph = new vtkCylinderSource();
    myCylinderGlyph.SetRadius(rad);
    myCylinderGlyph.SetHeight(rad);
    myCylinderGlyph.SetResolution(4);
    myCylinderGlyphMapper = new vtkPolyDataMapper();
    myCylinderGlyphMapper.SetInput(myCylinderGlyph.GetOutput());
    myGlyph = new vtkGlyph3D();
    myGlyph.SetInput(mySpiker);
    myGlyph.SetSource(myCylinderGlyph.GetOutput());
    myGlyphMapper.SetInput(myGlyph.GetOutput());
    myGlypher.SetMapper(myGlyphMapper);
    prop = myGlypher.GetProperty(); //for coloring

  }

I used this picked method, though it is just the picking itself, how can I
read out now which point (if there is a point under the mouse) I selected?
vtkIdType and a reference on the classname (ie SpikeMaker[0] or
SpikeMaker[1] as it is generated in an other class) as result would be
enough. 

void picked() {
    vtkPropPicker picker = new vtkPropPicker();
    System.out.println("Selection point: ("+ lastX +", "+ lastY);
    picker.PickProp(lastX, vtkpane.GetRenderWindow().GetSize()[1]-lastY,
vtkpane.GetRenderer());
/*
    myvtkProp = picker.GetProp();
    vtkActor actor = picker.GetActor();
*/

  }

Many thanks in advance!
~Jan