void
StyleHelper::horizontalHeader( QPainter* painter, const QRect& r )
{
painter->save();
QRect upperHalf( 0, 0, r.width(), r.height() / 2 );
QRect lowerHalf( 0, upperHalf.height(), r.width(), r.height() );
painter->fillRect( upperHalf, StyleHelper::headerUpperColor() );
painter->fillRect( lowerHalf, StyleHelper::headerLowerColor() );
{
QColor lineColor( 100, 100, 100 );
QLine line( 0, 0, r.width(), 0 );
painter->setPen( lineColor );
painter->drawLine( line );
}
{
QColor lineColor( 30, 30, 30 );
QLine line( 0, r.height() - 1, r.width(), r.height() - 1 );
painter->setPen( lineColor );
painter->drawLine( line );
}
painter->restore();
}
//----------------------------------------------------------------------------------
// BVH node
BVHNode::BVHNode(const HitableListRef &aList, float aTime0, float aTime1)
{
size_t n = aList->list().size();
// pick an axis to sort along
int axis = static_cast<int>(3.0f * randFloat());
// sort along the chosen axis
switch (axis)
{
case 0: // x
std::sort(aList->list().begin(), aList->list().end(), comparator(0));
break;
case 1: // y
std::sort(aList->list().begin(), aList->list().end(), comparator(1));
break;
case 2: // z
std::sort(aList->list().begin(), aList->list().end(), comparator(2));
break;
default:
break;
}
if (n == 1) // one element
{
mLeft = mRight = aList->list().at(0);
}
if (n == 2) // two elements
{
mLeft = aList->list().at(0);
mRight = aList->list().at(1);
}
else // split in half
{
size_t half_size = aList->list().size() / 2;
std::vector<HitableRef> lowerHalf(aList->list().begin(), aList->list().begin() + half_size);
std::vector<HitableRef> upperHalf(aList->list().begin() + half_size, aList->list().end());
HitableListRef low = HitableList::create(lowerHalf);
HitableListRef high = HitableList::create(upperHalf);
mLeft = create(low, aTime0, aTime1);
mRight = create(high, aTime0, aTime1);
}
AABB boxLeft;
AABB boxRight;
if (!mLeft->boundingBox(aTime0, aTime1, boxLeft) || !mRight->boundingBox(aTime0, aTime1, boxRight))
{
std::cerr << "No bounding box in BVH node constructor." << std::endl;
}
mBox = enclosingBox(boxLeft, boxRight);
}