Examples with FloatKeyframe com.smartandroid.sa.animation.Keyframe.FloatKeyframe used on opensource projects

Example 1 with FloatKeyframe

use of com.smartandroid.sa.animation.Keyframe.FloatKeyframe in project SmartAndroidSource by jaychou2012.

the class FloatKeyframeSet method getFloatValue.

public float getFloatValue(float fraction) {
    if (mNumKeyframes == 2) {
        if (firstTime) {
            firstTime = false;
            firstValue = ((FloatKeyframe) mKeyframes.get(0)).getFloatValue();
            lastValue = ((FloatKeyframe) mKeyframes.get(1)).getFloatValue();
            deltaValue = lastValue - firstValue;
        }
        if (mInterpolator != null) {
            fraction = mInterpolator.getInterpolation(fraction);
        }
        if (mEvaluator == null) {
            return firstValue + fraction * deltaValue;
        } else {
            return ((Number) mEvaluator.evaluate(fraction, firstValue, lastValue)).floatValue();
        }
    }
    if (fraction <= 0f) {
        final FloatKeyframe prevKeyframe = (FloatKeyframe) mKeyframes.get(0);
        final FloatKeyframe nextKeyframe = (FloatKeyframe) mKeyframes.get(1);
        float prevValue = prevKeyframe.getFloatValue();
        float nextValue = nextKeyframe.getFloatValue();
        float prevFraction = prevKeyframe.getFraction();
        float nextFraction = nextKeyframe.getFraction();
        final Interpolator /*Time*/
        interpolator = nextKeyframe.getInterpolator();
        if (interpolator != null) {
            fraction = interpolator.getInterpolation(fraction);
        }
        float intervalFraction = (fraction - prevFraction) / (nextFraction - prevFraction);
        return mEvaluator == null ? prevValue + intervalFraction * (nextValue - prevValue) : ((Number) mEvaluator.evaluate(intervalFraction, prevValue, nextValue)).floatValue();
    } else if (fraction >= 1f) {
        final FloatKeyframe prevKeyframe = (FloatKeyframe) mKeyframes.get(mNumKeyframes - 2);
        final FloatKeyframe nextKeyframe = (FloatKeyframe) mKeyframes.get(mNumKeyframes - 1);
        float prevValue = prevKeyframe.getFloatValue();
        float nextValue = nextKeyframe.getFloatValue();
        float prevFraction = prevKeyframe.getFraction();
        float nextFraction = nextKeyframe.getFraction();
        final Interpolator /*Time*/
        interpolator = nextKeyframe.getInterpolator();
        if (interpolator != null) {
            fraction = interpolator.getInterpolation(fraction);
        }
        float intervalFraction = (fraction - prevFraction) / (nextFraction - prevFraction);
        return mEvaluator == null ? prevValue + intervalFraction * (nextValue - prevValue) : ((Number) mEvaluator.evaluate(intervalFraction, prevValue, nextValue)).floatValue();
    }
    FloatKeyframe prevKeyframe = (FloatKeyframe) mKeyframes.get(0);
    for (int i = 1; i < mNumKeyframes; ++i) {
        FloatKeyframe nextKeyframe = (FloatKeyframe) mKeyframes.get(i);
        if (fraction < nextKeyframe.getFraction()) {
            final Interpolator /*Time*/
            interpolator = nextKeyframe.getInterpolator();
            if (interpolator != null) {
                fraction = interpolator.getInterpolation(fraction);
            }
            float intervalFraction = (fraction - prevKeyframe.getFraction()) / (nextKeyframe.getFraction() - prevKeyframe.getFraction());
            float prevValue = prevKeyframe.getFloatValue();
            float nextValue = nextKeyframe.getFloatValue();
            return mEvaluator == null ? prevValue + intervalFraction * (nextValue - prevValue) : ((Number) mEvaluator.evaluate(intervalFraction, prevValue, nextValue)).floatValue();
        }
        prevKeyframe = nextKeyframe;
    }
    // shouldn't get here
    return ((Number) mKeyframes.get(mNumKeyframes - 1).getValue()).floatValue();
}