C++ (Cpp) vpRowVector::resize Exemples

Exemple #1

Fichier : vpRowVector.cpp Projet : s-trinh/visp

/*!
  Stack row vectors.

  \param A : Initial vector.
  \param B : Vector to stack at the end of A.
  \param C : Resulting stacked vector \f$C = [A B]\f$.

  \code
  vpRowVector r1(3, 1);
  // r1 is equal to [1 1 1]
  vpRowVector r2(2, 3);
  // r2 is equal to [3 3]
  vpRowVector v;
  vpRowVector::stack(r1, r2, v);
  // v is equal to [1 1 1 3 3]
  \endcode

  \sa stack(const vpRowVector &)
  \sa stack(const vpRowVector &, const vpRowVector &)
*/
void vpRowVector::stack(const vpRowVector &A, const vpRowVector &B, vpRowVector &C)
{
  unsigned int nrA = A.getCols();
  unsigned int nrB = B.getCols();

  if (nrA == 0 && nrB == 0) {
    C.resize(0);
    return;
  }

  if (nrB == 0) {
    C = A;
    return;
  }

  if (nrA == 0) {
    C = B;
    return;
  }

  // General case
  C.resize(nrA + nrB);

  for (unsigned int i=0; i<nrA; i++)
    C[i] = A[i];

  for (unsigned int i=0; i<nrB; i++)
    C[nrA+i] = B[i];
}