A way to fadeIn from a certain value

I want to know if there is a way to create a fadeIn animation which begins from a certain value of opacity greater than 0. Default fadeIn animation modifies the opacity from 0 to 255, but I need an animation that goes from 10 to 255 for example.

Ok I found a way by extending the CCFadeIn class and overriding the update() method

class CCFadeInRange : public CCFadeIn
{
public:
    CCFadeInRange(int from, int to) : from(from), to(to){};
    virtual void update(float time);

    /** creates the action */
    static CCFadeInRange* create(float d, int from, int to);

private:
    int from;
    int to;
};

CCFadeInRange* CCFadeInRange::create(float d, int from, int to)
{
    CCFadeInRange* pAction = new CCFadeInRange(from, to);

    pAction->initWithDuration(d);
    pAction->autorelease();

    return pAction;
}

//CCFadeIn with range
void CCFadeInRange::update(float time)
{
    CCRGBAProtocol *pRGBAProtocol = dynamic_cast(m_pTarget);
    if (pRGBAProtocol)
    {
        pRGBAProtocol->setOpacity(from + (GLubyte)((to - from) * time));
    }
}

You should use CCFadeTo : “It modifies the opacity from the current value to a custom one.”
Set the opacity to 10, then fade to 255.

You’re right, i should use that, thx