Optionalv0: numbervalue for element 0
Optionalv1: numbervalue for element 1
Optionalv2: numbervalue for element 2
Optionalv3: numbervalue for element 3
Optionalv4: numbervalue for element 4
Optionalv5: numbervalue for element 5
Optionalv6: numbervalue for element 6
Optionalv7: numbervalue for element 7
Optionalv8: numbervalue for element 8
matrix created from values.
Create a Mat3 from values
Note: Since passing in a raw JavaScript array is valid in all circumstances, if you want to force a JavaScript array into a Mat3's specified type it would be faster to use