Fetches the design-space coordinates corresponding to the given named instance in the face.
| face |
The Face to work on |
| instance_index |
The index of the named instance to query |
| coords |
The array of coordinates found for the query |
| coords_length |
Input = the maximum number of coordinates to return; Output = the actual number of coordinates returned (may be zero) |
|
the number of variation axes in the face |