Mock Grid Implementation
class Grid : IGrid {
int left;
int right;
int bottom;
int top;
public int TotalCalls = 0;
public Grid(int left, int right, int bottom, int top) {
this.left = left;
this.right = right;
this.bottom = bottom;
this.top = top;
}
public int CountBlocksSet(int x1, int x2, int y1, int y2) {
++TotalCalls;
int intersectRight = Math.Min(x2, this.right);
int intersectLeft = Math.Max(x1, this.left);
int intersectTop = Math.Min(y2, this.top);
int intersectBottom = Math.Max(y1, this.bottom);
if (intersectRight < intersectLeft)
return 0;
if (intersectTop < intersectBottom)
return 0;
return (intersectRight - intersectLeft + 1) * (intersectTop - intersectBottom + 1);
}
}
