C++ (Cpp) KeyframeVector::first Exemples

Exemple #1

Fichier : KeyframeEffectModel.cpp Projet : joone/chromium-crosswalk

KeyframeEffectModelBase::KeyframeVector KeyframeEffectModelBase::normalizedKeyframes(const KeyframeVector& keyframes)
{
    double lastOffset = 0;
    KeyframeVector result;
    result.reserveCapacity(keyframes.size());

    for (const auto& keyframe : keyframes) {
        double offset = keyframe->offset();
        if (!isNull(offset)) {
            ASSERT(offset >= 0);
            ASSERT(offset <= 1);
            ASSERT(offset >= lastOffset);
            lastOffset = offset;
        }
        result.append(keyframe->clone());
    }

    if (result.isEmpty())
        return result;

    if (isNull(result.last()->offset()))
        result.last()->setOffset(1);

    if (result.size() > 1 && isNull(result[0]->offset()))
        result.first()->setOffset(0);

    size_t lastIndex = 0;
    lastOffset = result.first()->offset();
    for (size_t i = 1; i < result.size(); ++i) {
        double offset = result[i]->offset();
        if (!isNull(offset)) {
            for (size_t j = 1; j < i - lastIndex; ++j)
                result[lastIndex + j]->setOffset(lastOffset + (offset - lastOffset) * j / (i - lastIndex));
            lastIndex = i;
            lastOffset = offset;
        }
    }

    return result;
}