C++ BVHNode::setKeyFrameRelWeight方法代码示例

//.........这里部分代码省略.........

    //Shadow items don't matter much because the nearest/furthest item is always non-shadow
    if(firstItem->beginIndex() < minPosIndex)
      minPosIndex = firstItem->beginIndex();

    TrailItem* lastItem = trails->at(i)->lastItem();
    if(lastItem->endIndex() > maxPosIndex)
      maxPosIndex = trails->at(i)->lastItem()->endIndex();

    while(firstItem->isShadow())
      firstItem = firstItem->nextItem();
    currentItems[i] = firstItem;
  }
  if(maxPosIndex == -1)                       //Time-line is empty
    return;

  int curPosIndex = minPosIndex;
  //Position pseudo-node is not included, but it's OK as it can't be highlighted
  QStringList boneNames = BVH::getValidNodeNames();
  while(curPosIndex<=maxPosIndex)
  {
    foreach(QString bName, boneNames)
    {
      int sumWeight = 0;
      int weightsUsed = 0;
      bool emptyPosition = true;

      //Temporary helper structure. Value is array of 2 integers: frame index inside
      //respective animation and its frame weight
      QMap<BVHNode*, QVector<int> >* usedData = new QMap<BVHNode*, QVector<int> >();

      for(int i=0; i<trailsCount; i++)
      {
        TrailItem* item = currentItems[i];

        if(item == NULL)                                 //No more items on i-th trail
          continue;
        if(item->beginIndex() > curPosIndex)             //We're before first item of this trail
          continue;

        if(item->endIndex() < curPosIndex)               //Move to next item
        {
          currentItems[i] = item->nextItem();
          item = currentItems[i];
        }
        if(item == NULL || item->isShadow())             //Still here?
          continue;
        else
          emptyPosition = false;

        if(item->beginIndex() <= curPosIndex && item->endIndex() >= curPosIndex)
        {
          int frameIndex = curPosIndex - item->beginIndex();
          int frameWeight = item->getWeight(frameIndex);

          if(!item->getAnimation()->bones()->contains(bName))
            Announcer::Exception(NULL, "Exception: can't evaluate relative weight for limb " +bName);


//          BVHNode* limb = item->getAnimation()->bones()->value(bName);      NOT WORKING. REALLY NEED TO KNOW WHY
          //desperate DEBUG
          BVHNode* limb = item->getAnimation()->getNodeByName(bName);

          QVector<int> tempData;
          tempData << frameIndex << frameWeight;
          usedData->insert(limb, tempData);
          sumWeight += frameWeight * limb->frameData(frameIndex).weight();
          weightsUsed++;
        }
//        else Announcer::Exception(NULL, "Lame programmer exception :(");    //DEBUG
      }

      if(emptyPosition)                         //There were no valid item at this position
        break;                                  //so jump to the next one



      QMapIterator<BVHNode*, QVector<int> > iter(*usedData);
      while(iter.hasNext())
      {
        iter.next();
        BVHNode* bone = iter.key();
        QVector<int> tempData = iter.value();
        int frame = tempData[0];
        int frameW = tempData[1];

        if(sumWeight==0)                        //Little trick if weight of current limb was 0 on all trails
          bone->setKeyFrameRelWeight(frame, 1.0 / (double)weightsUsed);
        else
        {
          int limbW = bone->frameData(frame).weight();
          double relWei = (double)(frameW*limbW) / (double)sumWeight;
          bone->setKeyFrameRelWeight(frame, relWei);
        }
      }

      delete usedData;
    }
    curPosIndex++;
  }