Changeset aec775

Timestamp:

Oct 17, 2009, 7:46:28 PM (16 years ago)

Author:

Frederik Heber <heber@…>

Children:

b0ee98

Parents:

bee48d

Message:

Extended class LinkedCell to handle a relative offset to current cell.

• new overloaded function LinkedCell::CheckBounds(int [NDIM]) checking bounds with some relative offset.
• new function LinkedCell::GetRelativeToCurrentCell() returning LinkedNodes of cell relative to CurrentCell.

Location:

molecuilder/src

Files:

• linkedcell.cpp (modified) (2 diffs)
• linkedcell.hpp (modified) (1 diff)

molecuilder/src/linkedcell.cpp

@@ -202 +202 @@
 };
 
+/** Checks whether LinkedCell::n[] plus relative offset is each within [0,N[]].
+ * \param relative[NDIM] relative offset to current cell
+ * \return if all in intervals - true, else -false
+ */
+bool LinkedCell::CheckBounds(int relative[NDIM])
+{
+  bool status = true;
+  for(int i=0;i<NDIM;i++)
+    status = status && ((n[i]+relative[i] >=0) && (n[i]+relative[i] < N[i]));
+  if (!status)
+  cerr << "ERROR: indices are out of bounds!" << endl;
+  return status;
+};
+
 
 /** Returns a pointer to the current cell.
@@ -210 +224 @@
   if (CheckBounds()) {
     index = n[0] * N[1] * N[2] + n[1] * N[2] + n[2];
+    return (&(LC[index]));
+  } else {
+    return NULL;
+  }
+};
+
+/** Returns a pointer to the current cell.
+ * \param relative[NDIM] offset for each axis with respect to the current cell LinkedCell::n[NDIM]
+ * \return LinkedAtoms pointer to current cell, NULL if LinkedCell::n[]+relative[] are out of bounds.
+ */
+LinkedNodes* LinkedCell::GetRelativeToCurrentCell(int relative[NDIM])
+{
+  if (CheckBounds(relative)) {
+    index = (n[0]+relative[0]) * N[1] * N[2] + (n[1]+relative[1]) * N[2] + (n[2]+relative[2]);
     return (&(LC[index]));
   } else {

molecuilder/src/linkedcell.hpp

@@ -54 +54 @@
     ~LinkedCell();
     LinkedNodes* GetCurrentCell();
+    LinkedNodes* GetRelativeToCurrentCell(int relative[NDIM]);
     bool SetIndexToNode(const TesselPoint *Walker);
     bool SetIndexToVector(const Vector *x);
     bool CheckBounds();
+    bool CheckBounds(int relative[NDIM]);
     void GetNeighbourBounds(int lower[NDIM], int upper[NDIM]);