public List<View> GetCollidedViews(View view)
{
Rectangle viewsBoundingBox = view.GetBoundingBox ();
Dictionary<View, bool> collidedViews = new Dictionary<View, bool> ();
foreach (PartitionCell cell in view.CollisionCells) {
foreach (View otherView in cell.Views) {
if (otherView.Visible && !collidedViews.ContainsKey(otherView) && otherView != view) {
Rectangle otherViewsBoundingBox = otherView.GetBoundingBox ();
if (otherViewsBoundingBox.Intersects (viewsBoundingBox)) {
collidedViews.Add (otherView, true);
}
}
}
}
List<View> result = new List<View> ();
foreach (View collidedView in collidedViews.Keys) {
result.Add (collidedView);
}
return result;
}
public void UpdatePartitionCells(View view, List<PartitionCell> cells)
{
// Potential improvement: get the firstRow, lastRow, firstCol, and lastCol from
// cells, compare to the newly computed values, and only update the cells collection
// if there is a difference
foreach (PartitionCell cell in cells) {
cell.RemoveView (view);
}
cells.Clear ();
Rectangle boundingBox = view.GetBoundingBox ();
int firstRow = GetCellRow (boundingBox.Y);
int lastRow = GetCellRow (boundingBox.Bottom);
int firstCol = GetCellCol (boundingBox.X);
int lastCol = GetCellCol (boundingBox.Right);
for (int row=firstRow; row <= lastRow; row++) {
for (int col=firstCol; col <= lastCol; col++) {
PartitionCell cell = Cells [row, col];
cell.AddView (view);
cells.Add (cell);
}
}
}