graphene:matrix-init-skew (matrix xskew yskew)

matrix -- a graphene:matrix-t instance
xskew -- a number for the skew factor, in radians, on the X axis
yskew -- a number for the skew factor, in radians, on the Y axis

The initialized graphene:matrix-t instance.

Initializes the matrix with a skew transformation with the given factors. All numbers are coerced to a single float before being passed to the foreign C function.