SparseMatrix<float> createInteractionMatrix(int dim){
std::vector<MatrixElement<float>> elems;
int nCells = dim * dim;
for (int i = 0; i < nCells; ++i){
//In the matrix all diagonal entires are 4 and neighbor cells are -1
elems.push_back(MatrixElement<float>(i, i, 4));
int x, y;
cellPos(i, x, y, dim);
elems.push_back(MatrixElement<float>(i, cellNumber(x - 1, y, dim), -1));
elems.push_back(MatrixElement<float>(i, cellNumber(x + 1, y, dim), -1));
elems.push_back(MatrixElement<float>(i, cellNumber(x, y - 1, dim), -1));
elems.push_back(MatrixElement<float>(i, cellNumber(x, y + 1, dim), -1));
}
return SparseMatrix<float>(elems, dim, true);
}
SparseMatrix SimpleFluid::generateMatrix(){
std::vector<Element> elements;
int cells = std::pow(dim, 2);
//All diagonal entries of the matrix are 4
for (int i = 0; i < cells; ++i){
elements.push_back(Element(i, i, 4));
//Set the cell-cell interaction values for the cells up/down/left/right of our cell
//note that this simulation is currently using wrapping boundaries so we just wrap edges
//in cellNumber
int x, y;
cellPos(i, x, y);
elements.push_back(Element(i, cellNumber(x - 1, y), -1));
elements.push_back(Element(i, cellNumber(x + 1, y), -1));
elements.push_back(Element(i, cellNumber(x, y - 1), -1));
elements.push_back(Element(i, cellNumber(x, y + 1), -1));
}
return SparseMatrix(elements, dim, true);
}
void
SimpleTable::TableDrawCell
(
JPainter& p,
const JPoint& cell,
const JRect& rect
)
{
// Convert the row number into a JString.
JString cellNumber(cell.y);
// Draw the JString that holds the value.
p.String(rect, cellNumber, JPainter::kHAlignLeft, JPainter::kVAlignTop);
}
void
DataTable::TableDrawCell
(
JPainter& p,
const JPoint& cell,
const JRect& rect
)
{
// Convert the array's current element into a JString.
JString cellNumber(itsData->GetElement(cell.y));
// Draw the JString that holds the value.
p.String(rect, cellNumber, JPainter::kHAlignLeft, JPainter::kVAlignTop);
}
void
SelectionTable::TableDrawCell
(
JPainter& p,
const JPoint& cell,
const JRect& rect
)
{
// JTable keeps track of what's selected. If we want just
// basic hilighting of the selected cells, we can have JTable
// do it with this call:
HilightIfSelected(p, cell, rect);
// Convert the array's current element into a JString.
JString cellNumber(itsData->GetElement(cell.y));
// Draw the JString that holds the value.
p.String(rect, cellNumber, JPainter::kHAlignLeft, JPainter::kVAlignTop);
}
