public override object Solve(object solver) /* La construction de la matrice des données du problème n'est pas prise en charge par le solveur Coin */
{ /* Celle-ci se fait au fur et à mesure qu'on ajoute des données par le biais du code de la fonction Solve() */
int ind = 0;
double objectConst = 0.0;
int NZCount = 0;
int result;
UpperBounds = new double[NUM_COLS];
LowerBounds = new double [NUM_COLS];
MatrixBegin = new int [NUM_COLS + 1];
MatrixCount = new int [NUM_COLS];
for (int i = 0; i < NUM_COLS; i++)
{
UpperBounds[i] = Double.PositiveInfinity;
LowerBounds[i] = Double.NegativeInfinity;
MatrixBegin[i] = i * 2;
}
MatrixBegin[NUM_COLS] = NUM_COLS * 2;
for (int i = 0; i < NUM_COLS; i++)
{
int count = 0;
for (int j = 0; j < NUM_ROWS; j++)
{
if (Matrix[j, i] != 0)
{
NZCount++;
count++;
}
}
MatrixCount[i] = count;
}
MatrixValues = new double[NZCount];
MatrixIndex = new int[NZCount];
for (int i = 0; i < NUM_COLS; i++)
{
for (int j = 0; j < NUM_ROWS; j++)
{
if (Matrix[j, i] != 0)
{
MatrixValues[ind] = Matrix[j, i];
MatrixIndex[ind] = j;
ind++;
}
}
}
CoinMP.CoinLoadProblem((IntPtr)solver, NUM_COLS, NUM_ROWS, NZCount, 0, CoinMP.SOLV_OBJSENS_MAX, objectConst, ObjectCoeffs, LowerBounds, UpperBounds,
RowTypes, RhsValues, RangeValues, MatrixBegin, MatrixCount, MatrixIndex, MatrixValues, ColNames, RowNames, ObjName);
result = CoinMP.CoinOptimizeProblem((IntPtr)solver);
result = CoinMP.CoinWriteFile((IntPtr)solver, CoinMP.SOLV_FILE_MPS, "Result_CoinMP");
return(CoinMP.CoinGetSolutionTextIntPtr((IntPtr)solver));
}