Yewei,
As far as I know, paneling tools only work on topologically rectangular areas. Since this t-spline does not have a rectangular topology (you had some star points in it), that is why the entire surface can't be paneled at once.
Matt
Hi, you can use the tsSetSurfaceLayout command to see how the T-spline surface will be split up into rectangular NURBS surfaces. You can change this layout to better suit what you are trying to do.
Unfortunately, grasshopper and Rhino don't…
Jerrimo,
Just looking at your structure, it seems like T-Splines might be a helpful solution to you. After you've made your file in Grasshopper, just convert your NURBS to T-Splines (the shape won't change), turn on control points, select…