openmct/example/generator/SinewaveLimitProvider.js

/*****************************************************************************
 * Open MCT, Copyright (c) 2014-2021, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT is 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.
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 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
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 *****************************************************************************/

define([

], function (

) {

    var RED = {
            sin: 0.9,
            cos: 0.9
        },
        YELLOW = {
            sin: 0.5,
            cos: 0.5
        },
        LIMITS = {
            rh: {
                cssClass: "is-limit--upr is-limit--red",
                low: RED,
                high: Number.POSITIVE_INFINITY,
                name: "Red High"
            },
            rl: {
                cssClass: "is-limit--lwr is-limit--red",
                high: -RED,
                low: Number.NEGATIVE_INFINITY,
                name: "Red Low"
            },
            yh: {
                cssClass: "is-limit--upr is-limit--yellow",
                low: YELLOW,
                high: RED,
                name: "Yellow High"
            },
            yl: {
                cssClass: "is-limit--lwr is-limit--yellow",
                low: -RED,
                high: -YELLOW,
                name: "Yellow Low"
            }
        };

    function SinewaveLimitProvider() {

    }

    SinewaveLimitProvider.prototype.supportsLimits = function (domainObject) {
        return domainObject.type === 'generator';
    };

    SinewaveLimitProvider.prototype.getLimitEvaluator = function (domainObject) {
        return {
            evaluate: function (datum, valueMetadata) {
                var range = valueMetadata && valueMetadata.key;

                if (datum[range] > RED[range]) {
                    return LIMITS.rh;
                }

                if (datum[range] < -RED[range]) {
                    return LIMITS.rl;
                }

                if (datum[range] > YELLOW[range]) {
                    return LIMITS.yh;
                }

                if (datum[range] < -YELLOW[range]) {
                    return LIMITS.yl;
                }
            }
        };
    };

    return SinewaveLimitProvider;
});