diff --git a/libs/bluemath.js b/libs/bluemath.js
index f0c392e..4b0f0b9 100644
--- a/libs/bluemath.js
+++ b/libs/bluemath.js
@@ -125,3 +125,28 @@ class bound {
 		return valueArray.map((value,index) => Math.min(Math.max(value,this.min[index]),this.max[index]));
 	}
 }
+
+class boundValue {
+	constructor (bounds=new bound(),value=0) {
+		this.bounds = bounds instanceof bound ? bounds : new bound();
+		this.value = !isNaN(value) ? value : 0;
+	}
+
+	setValue(value=0) {
+		value = !isNaN(value) ? value : 0;
+		return this.value = this.bounds.clamp([value])[0];
+	}
+
+	getValue() {
+		return this.bounds.clamp([this.value])[0];
+	}
+
+	getValuePercent() {
+		return this.bounds.normalize([this.value])[0];
+	}
+
+	modValue(mod=0) {
+		mod = !isNaN(mod) ? mod : 0;
+		return this.setValue(this.value+mod);
+	}
+}