NURBSeditor

An Interactive Editor for Three Dimensional NURBS surfaces. Written in Processing using the G4P GUI library.

Running the program

1. Download Processing at https://processing.org/download/.
2. Place the files in C:\Users\YOURNAME\Documents\Processing
3. Open “NURBSeditor.pde”.
4. Click the Run button.
5. The program can be stopped by pressing the Stop button.

User Interface

• Each point can be dragged in the left point array in the main window by clicking and holding down the left mouse button. The z value is changed by scrolling the mousewheel.
• Adding and Removing rows/columns is done by clicking the related point and pressing the respective Add and Remove buttons on the left. [a] 3D NURBS Surface editor
• The deBoor control points are represented as blue squares.
• The resulting surface is in pink.
• The knot values, weight, resolution (N,M), and orders (k, l) can be changed in the smaller, second window.
• Press ‘h’ to hide the control polygon.
• Press space to hide the surface triangles (in black).
• Hold the right mouse button and drag to rotate the surface.