1 files changed, 48 insertions, 0 deletions
diff --git a/dgbuilder/core_nodes/logic/16-range.js b/dgbuilder/core_nodes/logic/16-range.js
new file mode 100644
index 00000000..ec39342a
--- /dev/null
+++ b/dgbuilder/core_nodes/logic/16-range.js
@@ -0,0 +1,48 @@
+/**
+ * Copyright 2013 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+module.exports = function(RED) {
+    "use strict";
+    function RangeNode(n) {
+        RED.nodes.createNode(this, n);
+        this.action = n.action;
+        this.round = n.round || false;
+        this.minin = Number(n.minin);
+        this.maxin = Number(n.maxin);
+        this.minout = Number(n.minout);
+        this.maxout = Number(n.maxout);
+        var node = this;
+
+        this.on('input', function (msg) {
+            var n = Number(msg.payload);
+            if (!isNaN(n)) {
+                if (node.action == "clamp") {
+                    if (n < node.minin) { n = node.minin; }
+                    if (n > node.maxin) { n = node.maxin; }
+                }
+                if (node.action == "roll") {
+                    if (n >= node.maxin) { n = (n - node.minin) % (node.maxin - node.minin) + node.minin; }
+                    if (n <  node.minin) { n = (n - node.minin) % (node.maxin - node.minin) + node.maxin; }
+                }
+                msg.payload = ((n - node.minin) / (node.maxin - node.minin) * (node.maxout - node.minout)) + node.minout;
+                if (node.round) { msg.payload = Math.round(msg.payload); }
+                node.send(msg);
+            }
+            else { node.log("Not a number: "+msg.payload); }
+        });
+    }
+    RED.nodes.registerType("range", RangeNode);
+}