69 lines
2.8 KiB
JavaScript
69 lines
2.8 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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function RbeNode(n) {
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RED.nodes.createNode(this,n);
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this.func = n.func || "rbe";
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this.gap = n.gap || "0";
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this.start = n.start || '';
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this.inout = n.inout || "out";
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this.pc = false;
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if (this.gap.substr(-1) === "%") {
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this.pc = true;
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this.gap = parseFloat(this.gap);
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}
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this.g = this.gap;
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var node = this;
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node.previous = {};
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this.on("input",function(msg) {
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if (msg.hasOwnProperty("payload")) {
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var t = msg.topic || "_no_topic";
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if (this.func === "rbe") {
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if (typeof(msg.payload) === "object") {
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if (typeof(node.previous[t]) !== "object") { node.previous[t] = {}; }
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if (!RED.util.compareObjects(msg.payload, node.previous[t])) {
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node.previous[t] = msg.payload;
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node.send(msg);
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}
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}
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else {
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if (msg.payload !== node.previous[t]) {
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node.previous[t] = msg.payload;
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node.send(msg);
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}
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}
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}
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else {
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var n = parseFloat(msg.payload);
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if (!isNaN(n)) {
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if ((typeof node.previous[t] === 'undefined') && (this.func === "narrowband")) {
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if (node.start === '') { node.previous[t] = n; }
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else { node.previous[t] = node.start; }
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}
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if (node.pc) { node.gap = (node.previous[t] * node.g / 100) || 0; }
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if (!node.previous.hasOwnProperty(t)) { node.previous[t] = n - node.gap; }
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if (Math.abs(n - node.previous[t]) >= node.gap) {
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if (this.func === "deadband") {
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if (node.inout === "out") { node.previous[t] = n; }
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node.send(msg);
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}
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}
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else {
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if (this.func === "narrowband") {
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if (node.inout === "out") { node.previous[t] = n; }
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node.send(msg);
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}
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}
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if (node.inout === "in") { node.previous[t] = n; }
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}
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else {
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node.warn(RED._("rbe.warn.nonumber"));
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}
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}
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} // ignore msg with no payload property.
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});
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}
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RED.nodes.registerType("rbe",RbeNode);
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}
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