d

iOS/src/Model.swift

@@ -0,0 +1,28 @@
+import Foundation
+
+protocol MItemsCount {
+  var itemsCount: Int { get }
+}
+
+func memorySide() -> CGFloat {
+  return 50
+}
+
+func memorySpace() -> CGFloat {
+  return 20
+}
+
+func memoryGap() -> CGFloat {
+  return memorySide() + memorySpace()
+}
+
+func memoryItemPositions(M: MItemsCount) -> [(CGFloat, CGFloat)] {
+  var pos = [(CGFloat, CGFloat)]()
+  for i in stride(from: 0, to: M.itemsCount, by: 1) {
+    let row = floor(Double(i) / 4)
+    let x = memoryGap() + (Double(i) - row * 4) * memoryGap()
+    let y = memoryGap() + row * memoryGap()
+    pos.append((x, y))
+  }
+  return pos
+}