Example usage for com.badlogic.gdx.math Interpolation pow3In

Introduction

In this page you can find the example usage for com.badlogic.gdx.math Interpolation pow3In.

Prototype

PowIn pow3In

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Usage

From source file:com.cyphercove.doublehelix.Particle.java

License:Apache License

private void updateCommon(float delta, boolean haveTouchVelocity, Vector3 touchPosition, Vector3 touchVelocity,
        float cameraDistance) {
    age += delta;/*from  w ww.ja v  a 2s. co  m*/
    if (age < LIFE_FADE_TIME)
        ageFade = Interpolation.fade.apply(age / LIFE_FADE_TIME);
    else if (age > LIFE_FADE_OUT_TIME)
        ageFade = Interpolation.fade.apply((LIFE_TIME - age) / LIFE_FADE_TIME);
    else
        ageFade = 1;

    TMPV.set(center.x, center.y, 0);
    float distFromAccelerationCenter = TMPV.len() - RADIAL_ACCELERATION_MAX_CENTER;
    float radialAcceleration = RADIAL_ACCELERATION_MAX * (1F - Math.min(1f, Interpolation.fade
            .apply(Math.abs(distFromAccelerationCenter) / RADIAL_ACCELERATION_EFFECT_EXTENT)));
    TMPV.nor().rotate(Vector3.Z, 90f - (distFromAccelerationCenter * DEGREES_ACCLERATION_PER_DIST)); //motion direction
    TMPV.scl(radialAcceleration); //acceleration
    baseVelocity.add(TMPV.scl(delta)); //apply acceleration

    float dampenAmount = DAMPENING * baseVelocity.len() * delta;
    if (dampenAmount >= 1f)
        baseVelocity.set(0, 0, 0);
    else
        baseVelocity.add(TMPV.set(baseVelocity).scl(-dampenAmount));

    velocity.set(baseVelocity);

    if (haveTouchVelocity && cameraDistance <= TOUCH_CHECK_DISTANCE) {
        float dst = TMPV.set(center).sub(touchPosition).len();
        if (dst < TOUCH_INFLUENCE) {
            float mag = 1f - Math.min(1f, dst / TOUCH_INFLUENCE);
            if (mag > touchMagnitude) {
                touchMagnitude = mag;
                //float radialDst = distanceToAxis(center, touchPosition, touchVelocity);
                touchAge = 0;

                touchRotationVelocity.set(touchVelocity).scl(TOUCH_SPEED_RATIO * mag);
                touchRotationAxis.set(TMPV).crs(touchVelocity).nor();
            }
        }
    }

    if (touchMagnitude > 0) {
        touchAge += delta;

        if (touchAge > TOUCH_DAMPEN_TIME) {
            touchMagnitude = 0;
            TMPV.set(touchRotationVelocity).scl(0.5f);
            TMPV.rotate(touchRotationAxis, -45);
            baseVelocity.add(TMPV);
            velocity.set(baseVelocity);
        } else {
            float lerp = touchAge / TOUCH_DAMPEN_TIME;
            TMPV.set(touchRotationVelocity).scl(1f - 0.5f * Interpolation.pow2Out.apply(lerp));
            TMPV.rotate(touchRotationAxis, -Interpolation.pow3In.apply(lerp) * 45);
            velocity.add(TMPV);
        }
    }

    if (age >= LIFE_TIME) {
        center.set(originalCenter);
        age = 0;
    } else {
        center.add(TMPV.set(velocity).scl(delta));
    }
}

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