Color picker refactoring

js/entity/UnitRealEntity.js

@@ -0,0 +1,24 @@
+import IEntity from "./IEntity"
+import Utility from "../Utility"
+
+export default class RealUnitEntity extends IEntity {
+
+    static attributes = {
+        value: Number,
+    }
+
+    /** @param {Object | Number | String} options */
+    constructor(options = 0) {
+        super(options)
+        /** @type {Number} */
+        this.value = Utility.clamp(this.value, 0, 1)
+    }
+
+    valueOf() {
+        return this.value
+    }
+
+    toString() {
+        return this.value.toFixed(6)
+    }
+}