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C++ BitSet32::firstMarkedBit方法代码示例

本文整理汇总了C++中BitSet32::firstMarkedBit方法的典型用法代码示例。如果您正苦于以下问题:C++ BitSet32::firstMarkedBit方法的具体用法?C++ BitSet32::firstMarkedBit怎么用?C++ BitSet32::firstMarkedBit使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在BitSet32的用法示例。


在下文中一共展示了BitSet32::firstMarkedBit方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: addMovement

void VelocityTracker::addMovement(nsecs_t eventTime, BitSet32 idBits, const Position* positions) {
    while (idBits.count() > MAX_POINTERS) {
        idBits.clearLastMarkedBit();
    }

    if ((mCurrentPointerIdBits.value & idBits.value)
            && eventTime >= mLastEventTime + ASSUME_POINTER_STOPPED_TIME) {
#if DEBUG_VELOCITY
        ALOGD("VelocityTracker: stopped for %0.3f ms, clearing state.",
                (eventTime - mLastEventTime) * 0.000001f);
#endif
        // We have not received any movements for too long.  Assume that all pointers
        // have stopped.
        mStrategy->clear();
    }
    mLastEventTime = eventTime;

    mCurrentPointerIdBits = idBits;
    if (mActivePointerId < 0 || !idBits.hasBit(mActivePointerId)) {
        mActivePointerId = idBits.isEmpty() ? -1 : idBits.firstMarkedBit();
    }

    mStrategy->addMovement(eventTime, idBits, positions);

#if DEBUG_VELOCITY
    ALOGD("VelocityTracker: addMovement eventTime=%" PRId64 ", idBits=0x%08x, activePointerId=%d",
            eventTime, idBits.value, mActivePointerId);
    for (BitSet32 iterBits(idBits); !iterBits.isEmpty(); ) {
        uint32_t id = iterBits.firstMarkedBit();
        uint32_t index = idBits.getIndexOfBit(id);
        iterBits.clearBit(id);
        Estimator estimator;
        getEstimator(id, &estimator);
        ALOGD("  %d: position (%0.3f, %0.3f), "
                "estimator (degree=%d, xCoeff=%s, yCoeff=%s, confidence=%f)",
                id, positions[index].x, positions[index].y,
                int(estimator.degree),
                vectorToString(estimator.xCoeff, estimator.degree + 1).c_str(),
                vectorToString(estimator.yCoeff, estimator.degree + 1).c_str(),
                estimator.confidence);
    }
#endif
}
开发者ID:MIPS,项目名称:frameworks-native,代码行数:43,代码来源:VelocityTracker.cpp


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