Getting the points of Geom2d_BSplineCurve

Hi,

I have been searching for how to get the points that are passed by the BSplineCurve. If for example, there is a value t(time). If t is zero, then the start point of the spline curve is returned, and if t is 1, then the end point of the spline curve is returned. If t is >0 and

Thank you.

For reference, this is my code to create the bspline curve:
//Prepare the points to be interpolated (passed)
Handle(TColgp_HArray1OfPnt2d) harray = new TColgp_HArray1OfPnt2d (1,MAIN_NUM_SPHERES); // sizing harray
for (int i=0;i {
harray->SetValue(i+1,gp_Pnt2d (g_vSpheresPos[i].x,g_vSpheresPos[i].y));

}

Geom2dAPI_Interpolate anInterpolation(harray,Standard_False,0.01);
anInterpolation.Perform();

Handle(Geom2d_BSplineCurve) SPL2 = anInterpolation.Curve();