Position refPos = this._pol_.getReferencePosition();
if (refPos == null)
return;
Line ray = view.computeRayFromScreenPoint(mousePoint.getX(), mousePoint.getY());
Line previousRay = view.computeRayFromScreenPoint(previousMousePoint.getX(), previousMousePoint.getY());
Vec4 vec = AirspaceEditorUtil.intersectGlobeAt(this._wwd, refPos.getElevation(), ray);
Vec4 previousVec = AirspaceEditorUtil.intersectGlobeAt(this._wwd, refPos.getElevation(), previousRay);
if (vec == null || previousVec == null)