value for element 0
value for element 1
value for element 2
value for element 3
value for element 4
value for element 5
value for element 6
value for element 7
value for element 8
Optional
dst: Tmatrix to hold result. If not passed a new one is created.
Mat3 set from values.
Sets the values of a Mat3 Also see mat3.create and mat3.copy