Method transformQuat

native/cocos/math/Vec3.cpp:308–324

}

void Vec3::transformQuat(const Quaternion &q) {
    const float qx = q.x;
    const float qy = q.y;
    const float qz = q.z;
    const float qw = q.w;

    // calculate quat * vec
    const float ix = qw * x + qy * z - qz * y;
    const float iy = qw * y + qz * x - qx * z;
    const float iz = qw * z + qx * y - qy * x;
    const float iw = -qx * x - qy * y - qz * z;

    // calculate result * inverse quat
    x = ix * qw + iw * -qx + iy * -qz - iz * -qy;
    y = iy * qw + iw * -qy + iz * -qx - ix * -qz;
    z = iz * qw + iw * -qz + ix * -qy - iy * -qx;
}

float Vec3::distance(const Vec3 &v) const {
    const float dx = v.x - x;