Rotate this matrix angle radians around Z
Source
void rotateZ(double angle) {
double cosAngle = Math.cos(angle);
double sinAngle = Math.sin(angle);
var t1 = _m4storage[0] * cosAngle + _m4storage[4] * sinAngle;
var t2 = _m4storage[1] * cosAngle + _m4storage[5] * sinAngle;
var t3 = _m4storage[2] * cosAngle + _m4storage[6] * sinAngle;
var t4 = _m4storage[3] * cosAngle + _m4storage[7] * sinAngle;
var t5 = _m4storage[0] * -sinAngle + _m4storage[4] * cosAngle;
var t6 = _m4storage[1] * -sinAngle + _m4storage[5] * cosAngle;
var t7 = _m4storage[2] * -sinAngle + _m4storage[6] * cosAngle;
var t8 = _m4storage[3] * -sinAngle + _m4storage[7] * cosAngle;
_m4storage[0] = t1;
_m4storage[1] = t2;
_m4storage[2] = t3;
_m4storage[3] = t4;
_m4storage[4] = t5;
_m4storage[5] = t6;
_m4storage[6] = t7;
_m4storage[7] = t8;
}