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102 lines
4.5 KiB
JavaScript
102 lines
4.5 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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this.property = n.property || "payload";
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this.topi = n.topi || "topic";
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this.septopics = true;
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if (n.septopics !== undefined && n.septopics === false) {
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this.septopics = false;
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}
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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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var topic;
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try {
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topic = RED.util.getMessageProperty(msg,node.topi);
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}
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catch(e) { }
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if (msg.hasOwnProperty("reset")) {
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if (node.septopics && topic && (typeof topic === "string") && (topic !== "")) {
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delete node.previous[msg.topic];
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}
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else { node.previous = {}; }
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}
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var value;
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try {
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value = RED.util.getMessageProperty(msg,node.property);
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}
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catch(e) { }
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if (value !== undefined) {
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var t = "_no_topic";
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if (node.septopics) { t = topic || t; }
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if ((this.func === "rbe") || (this.func === "rbei")) {
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var doSend = (this.func !== "rbei") || (node.previous.hasOwnProperty(t)) || false;
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if (typeof(value) === "object") {
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if (typeof(node.previous[t]) !== "object") { node.previous[t] = {}; }
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if (!RED.util.compareObjects(value, node.previous[t])) {
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node.previous[t] = RED.util.cloneMessage(value);
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if (doSend) { node.send(msg); }
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}
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}
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else {
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if (value !== node.previous[t]) {
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node.previous[t] = RED.util.cloneMessage(value);
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if (doSend) { 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(value);
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if (!isNaN(n)) {
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if ((typeof node.previous[t] === 'undefined') && (this.func === "narrowband" || this.func === "narrowbandEq")) {
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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 = Math.abs(node.previous[t] * node.g / 100) || 0; }
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else { node.gap = Number(node.gap); }
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if ((node.previous[t] === undefined) && (node.func === "narrowbandEq")) { node.previous[t] = n; }
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if (node.previous[t] === undefined) { node.previous[t] = n - node.gap - 1; }
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if (Math.abs(n - node.previous[t]) === node.gap) {
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if ((this.func === "deadbandEq")||(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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else if (Math.abs(n - node.previous[t]) > node.gap) {
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if (this.func === "deadband" || this.func === "deadbandEq") {
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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 if (Math.abs(n - node.previous[t]) < node.gap) {
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if ((this.func === "narrowband")||(this.func === "narrowbandEq")) {
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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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