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96 lines
3.5 KiB
JavaScript
96 lines
3.5 KiB
JavaScript
/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/*global define*/
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define(
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[],
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function () {
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"use strict";
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/**
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* The PlotTickGenerator provides labels for ticks along the
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* domain and range axes of the plot, to support the plot
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* template.
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*
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* @memberof platform/features/plot
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* @constructor
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* @param {PlotPanZoomStack} panZoomStack the pan-zoom stack for
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* this plot, used to determine plot boundaries
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* @param {TelemetryFormatter} formatter used to format (for display)
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* domain and range values.
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*/
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function PlotTickGenerator(panZoomStack, formatter) {
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this.panZoomStack = panZoomStack;
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this.formatter = formatter;
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}
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// Generate ticks; interpolate from start up to
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// start + span in count steps, using the provided
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// formatter to represent each value.
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PlotTickGenerator.prototype.generateTicks = function (start, span, count, format) {
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var step = span / (count - 1),
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result = [],
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i;
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for (i = 0; i < count; i += 1) {
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result.push({
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label: format(i * step + start)
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});
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}
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return result;
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};
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/**
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* Generate tick marks for the domain axis.
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* @param {number} count the number of ticks
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* @returns {string[]} labels for those ticks
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*/
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PlotTickGenerator.prototype.generateDomainTicks = function (count) {
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var panZoom = this.panZoomStack.getPanZoom();
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return this.generateTicks(
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panZoom.origin[0],
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panZoom.dimensions[0],
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count,
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this.formatter.formatDomainValue
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);
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};
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/**
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* Generate tick marks for the range axis.
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* @param {number} count the number of ticks
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* @returns {string[]} labels for those ticks
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*/
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PlotTickGenerator.prototype.generateRangeTicks = function (count) {
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var panZoom = this.panZoomStack.getPanZoom();
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return this.generateTicks(
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panZoom.origin[1],
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panZoom.dimensions[1],
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count,
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this.formatter.formatRangeValue
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);
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};
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return PlotTickGenerator;
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}
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);
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