Rename Röntgen to Map Machine.

map_machine/util.py

@@ -0,0 +1,38 @@
+"""
+Utility file.
+"""
+from dataclasses import dataclass
+from typing import Any
+
+__author__ = "Sergey Vartanov"
+__email__ = "me@enzet.ru"
+
+
+@dataclass
+class MinMax:
+    """
+    Minimum and maximum.
+    """
+
+    min_: Any = None
+    max_: Any = None
+
+    def update(self, value: Any) -> None:
+        """Update minimum and maximum with new value."""
+        self.min_ = value if not self.min_ or value < self.min_ else self.min_
+        self.max_ = value if not self.max_ or value > self.max_ else self.max_
+
+    def delta(self) -> Any:
+        """Difference between maximum and minimum."""
+        return self.max_ - self.min_
+
+    def center(self) -> Any:
+        """Get middle point between minimum and maximum."""
+        return (self.min_ + self.max_) / 2
+
+    def is_empty(self) -> bool:
+        """Check if interval is empty."""
+        return self.min_ == self.max_
+
+    def __repr__(self) -> str:
+        return f"{self.min_}:{self.max_}"