Camera rotation opengl

camera-rotate.cpp

// member function changes direction camera is looking
void Camera::MoveLook(const float dx, const float dy, const float dr) {

    // rotate cam.fwd & cam.right around cam.up by dx
    this->fwd = glm::rotate(this->fwd, dx, this->up);
    this->right = glm::rotate(this->right, dx, this->up);

    // rotate cam.up & cam.fwd around cam.right by dy
    this->up = glm::rotate(this->up, dy, this->right);
    this->fwd = glm::rotate(this->fwd, dy, this->right);

    // rotate cam.up & cam.right around cam.fwd by dr
    this->up = glm::rotate(this->up, dr, this->fwd);
    this->right = glm::rotate(this->right, dr, this->fwd);

    // recalculate view matrix
    this->UpdateViewMatrix();
}