add a scalar range helper class

framework/std_utils/src/mm/scalar_range2.hpp

@@ -0,0 +1,61 @@
+#pragma once
+
+namespace MM {
+
+template<typename T>
+struct ScalarRange2 {
+	T v_min {};
+	T v_max {};
+
+	ScalarRange2(void) = default;
+
+	ScalarRange2(const T& min, const T& max) noexcept {
+		if (min <= max) {
+			v_min = min;
+			v_max = max;
+		} else {
+			v_min = max;
+			v_max = min;
+		}
+	}
+
+	bool operator==(const ScalarRange2<T>& rhs) const {
+		return min() == rhs.min() && max() == rhs.max();
+	}
+
+	bool operator!=(const ScalarRange2<T>& rhs) const {
+		return !(*this == rhs);
+	}
+
+	[[nodiscard]] T& min(void) { return v_min; }
+	[[nodiscard]] T& max(void) { return v_max; }
+
+	[[nodiscard]] const T& min(void) const { return v_min; }
+	[[nodiscard]] const T& max(void) const { return v_max; }
+
+	void setMin(const T& new_min) {
+		min() = new_min;
+		max() = max() < new_min ? new_min : max();
+	}
+
+	void setMax(const T& new_max) {
+		max() = new_max;
+		min() = min() > new_max ? new_max : min();
+	}
+
+	void sanitize(void) {
+		if (min() > max()) {
+			// TODO: is copy ok?
+			T tmp = min();
+			min() = max();
+			max() = tmp;
+		}
+	}
+
+	[[nodiscard]] bool inRange(T&& value) const {
+		return value >= min() && value <= max();
+	}
+};
+
+} // MM
+