Patch |
| Member name | Value | Description |
|---|---|---|
| New | 0 | Begins a new patch, unconnected to any other.This must be followed by 12 pairs of coordinates, x1 y1 x2 y2 … x12 y12, which specify the Bézier control points that define the four boundary curves. |
| Second | 1 | Form a new patch connected to the second cubic bezier curve of the previous patch. |
| Third | 2 | Form a new patch connected to the third cubic bezier curve of the previous patch. |
| Fourth | 3 | Form a new patch connected to the fourth cubic bezier curve of the previous patch. |