Constant Material nodes added

js/entity/ColorChannelEntity.js

@@ -0,0 +1,27 @@
+import IEntity from "./IEntity.js"
+
+export default class ColorChannelEntity extends IEntity {
+
+    static attributes = {
+        value: {
+            default: 0,
+        },
+    }
+
+    static {
+        this.cleanupAttributes(this.attributes)
+    }
+
+    constructor(values = 0) {
+        super(values)
+        /** @type {Number} */ this.value
+    }
+
+    valueOf() {
+        return this.value
+    }
+
+    toString() {
+        return this.value.toFixed(6)
+    }
+}