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/**
* 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);
}
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