Rotate this angle radians around X
Source
void rotateX(double angle) {
double cosAngle = Math.cos(angle);
double sinAngle = Math.sin(angle);
var t1 = _m4storage[4] * cosAngle + _m4storage[8] * sinAngle;
var t2 = _m4storage[5] * cosAngle + _m4storage[9] * sinAngle;
var t3 = _m4storage[6] * cosAngle + _m4storage[10] * sinAngle;
var t4 = _m4storage[7] * cosAngle + _m4storage[11] * sinAngle;
var t5 = _m4storage[4] * -sinAngle + _m4storage[8] * cosAngle;
var t6 = _m4storage[5] * -sinAngle + _m4storage[9] * cosAngle;
var t7 = _m4storage[6] * -sinAngle + _m4storage[10] * cosAngle;
var t8 = _m4storage[7] * -sinAngle + _m4storage[11] * cosAngle;
_m4storage[4] = t1;
_m4storage[5] = t2;
_m4storage[6] = t3;
_m4storage[7] = t4;
_m4storage[8] = t5;
_m4storage[9] = t6;
_m4storage[10] = t7;
_m4storage[11] = t8;
}