Fetches the MathGlyphConstruction for the specified font, glyph index, and direction.
The corresponding list of size variants is returned as a list of OtMathGlypthVariant structs.
<note>The direction parameter is only used to select between horizontal or vertical directions for the construction.
Even though all Direction values are accepted, only the result of
HB_DIRECTION_IS_HORIZONTAL is considered.</note>
| font |
Font to work upon |
| glyph |
The index of the glyph to stretch |
| direction |
The direction of the stretching (horizontal or vertical) |
| start_offset |
offset of the first variant to retrieve |
| variants |
array of variants returned |
| variants_count |
Input = the maximum number of variants to return; Output = the actual number of variants returned |
|
the total number of size variants available or zero |