Use cubic-bezier to customise my own easing equation

[Korry]

Hi

I would like to know whether the interface is cubic-bezier left in touchgfx.I noticed that there's a little bit less description of the easing equation .

Thank you.

[Martin KJELDSEN · Accepted solution]

Hi Korry,

If i left you with the following implementation of one of the easing equations, would it be enough for you to continue? They're declared in the class EasingEquations as static functions.

    /**
     * Cubic easing in: t^3. Accelerating from zero velocity.
     *
     * @param  t Time. The current time or step.
     * @param  b Beginning. The beginning value.
     * @param  c Change. The change between the beginning value and the destination value.
     * @param  d Duration. The total time or total number of steps.
     *
     * @return The current value as a function of the current time or step.
     */
    static int16_t cubicEaseIn(uint16_t t, int16_t b, int16_t c, uint16_t d);

Definition:

int16_t EasingEquations::cubicEaseIn(uint16_t t, int16_t b, int16_t c, uint16_t d)
{
    int16_t result = b + c;
    if ((t < d) && (d != 0))
    {
        float tmp = static_cast<float>(t) / d;
        result = roundRespectSign(c * tmp * tmp * tmp + b);
    }
    return result;
}

And you would use your own (static function defined whereever) in this way:

virtual void handleTickEvent()
{
    ....
    counter++;
    // Calculate value in [0;targetValue]
    calculatedValue = MyEasingEquations::myCustomEeasingEq(counter, 0, targetValue, animationSteps);
....

/Martin

[Korry]

Thank you Martin.I can understand that very well.