int CNNFilter::Compress(int nInput)
{
// convert the input to a short and store it
m_rbInput[0] = GetSaturatedShortFromInt(nInput);
// figure a dot product
int nDotProduct;
if (m_bMMXAvailable)
nDotProduct = CalculateDotProduct(&m_rbInput[-m_nOrder], &m_paryM[0], m_nOrder);
else
nDotProduct = CalculateDotProductNoMMX(&m_rbInput[-m_nOrder], &m_paryM[0], m_nOrder);
// calculate the output
int nOutput = nInput - ((nDotProduct + (1 << (m_nShift - 1))) >> m_nShift);
// adapt
if (m_bMMXAvailable)
Adapt(&m_paryM[0], &m_rbDeltaM[-m_nOrder], -nOutput, m_nOrder);
else
AdaptNoMMX(&m_paryM[0], &m_rbDeltaM[-m_nOrder], nOutput, m_nOrder);
int nTempABS = abs(nInput);
if (nTempABS > (m_nRunningAverage * 3))
m_rbDeltaM[0] = ((nInput >> 25) & 64) - 32;
else if (nTempABS > (m_nRunningAverage * 4) / 3)
void
BSPTree::BuildTree(UniquePtr<BSPTreeNode>& aRoot,
std::deque<gfx::Polygon3D>& aPolygons)
{
if (aPolygons.empty()) {
return;
}
const gfx::Polygon3D& splittingPlane = aRoot->First();
std::deque<gfx::Polygon3D> backPolygons, frontPolygons;
for (gfx::Polygon3D& polygon : aPolygons) {
size_t pos = 0, neg = 0;
nsTArray<float> dots = CalculateDotProduct(splittingPlane, polygon,
pos, neg);
// Back polygon
if (pos == 0 && neg > 0) {
backPolygons.push_back(std::move(polygon));
}
// Front polygon
else if (pos > 0 && neg == 0) {
frontPolygons.push_back(std::move(polygon));
}
// Coplanar polygon
else if (pos == 0 && neg == 0) {
aRoot->polygons.push_back(std::move(polygon));
}
// Polygon intersects with the splitting plane.
else if (pos > 0 && neg > 0) {
nsTArray<gfx::Point3D> backPoints, frontPoints;
SplitPolygon(splittingPlane, polygon, dots, backPoints, frontPoints);
backPolygons.push_back(gfx::Polygon3D(std::move(backPoints)));
frontPolygons.push_back(gfx::Polygon3D(std::move(frontPoints)));
}
}
if (!backPolygons.empty()) {
aRoot->back.reset(new BSPTreeNode(PopFront(backPolygons)));
BuildTree(aRoot->back, backPolygons);
}
if (!frontPolygons.empty()) {
aRoot->front.reset(new BSPTreeNode(PopFront(frontPolygons)));
BuildTree(aRoot->front, frontPolygons);
}
}