openmct/example/imagery/plugin.js

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/*****************************************************************************
* Open MCT, Copyright (c) 2014-2022, 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.
*
* 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.
*
* Open MCT includes source code licensed under additional open source
* licenses. See the Open Source Licenses file (LICENSES.md) included with
* this source code distribution or the Licensing information page available
* at runtime from the About dialog for additional information.
*****************************************************************************/
const DEFAULT_IMAGE_SAMPLES = [
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18731.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18732.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18733.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18734.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18735.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18736.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18737.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18738.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18739.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18740.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18741.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18742.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18743.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18744.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18745.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18746.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18747.jpg",
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18748.jpg"
];
const DEFAULT_IMAGE_LOAD_DELAY_IN_MILISECONDS = 20000;
const MIN_IMAGE_LOAD_DELAY_IN_MILISECONDS = 5000;
let openmctInstance;
export default function () {
return function install(openmct) {
openmctInstance = openmct;
openmct.types.addType('example.imagery', {
key: 'example.imagery',
name: 'Example Imagery',
cssClass: 'icon-image',
description: 'For development use. Creates example imagery '
+ 'data that mimics a live imagery stream.',
creatable: true,
initialize: (object) => {
object.configuration = {
imageLocation: '',
imageLoadDelayInMilliSeconds: DEFAULT_IMAGE_LOAD_DELAY_IN_MILISECONDS,
imageSamples: [],
layers: []
};
object.telemetry = {
values: [
{
name: 'Name',
key: 'name'
},
{
name: 'Time',
key: 'utc',
format: 'utc',
hints: {
domain: 2
}
},
{
name: 'Local Time',
key: 'local',
format: 'local-format',
hints: {
domain: 1
}
},
{
name: 'Image',
key: 'url',
format: 'image',
hints: {
image: 1
},
layers: [
{
source: 'dist/imagery/example-imagery-layer-16x9.png',
name: '16:9'
},
{
source: 'dist/imagery/example-imagery-layer-safe.png',
name: 'Safe'
},
{
source: 'dist/imagery/example-imagery-layer-scale.png',
name: 'Scale'
}
]
},
{
name: 'Image Download Name',
key: 'imageDownloadName',
format: 'imageDownloadName',
hints: {
imageDownloadName: 1
}
}
]
};
},
form: [
{
key: 'imageLocation',
name: 'Images url list (comma separated)',
control: 'textarea',
cssClass: 'l-inline',
property: [
"configuration",
"imageLocation"
]
},
{
key: 'imageLoadDelayInMilliSeconds',
name: 'Image load delay (milliseconds)',
control: 'numberfield',
required: true,
cssClass: 'l-inline',
property: [
"configuration",
"imageLoadDelayInMilliSeconds"
]
}
]
});
openmct.telemetry.addProvider(getRealtimeProvider());
openmct.telemetry.addProvider(getHistoricalProvider());
openmct.telemetry.addProvider(getLadProvider());
};
}
function getCompassValues(min, max) {
return min + Math.random() * (max - min);
}
function getImageSamples(configuration) {
let imageSamples = DEFAULT_IMAGE_SAMPLES;
if (configuration.imageLocation && configuration.imageLocation.length) {
imageSamples = getImageUrlListFromConfig(configuration);
}
return imageSamples;
}
function getImageUrlListFromConfig(configuration) {
return configuration.imageLocation.split(',');
}
function getImageLoadDelay(domainObject) {
const imageLoadDelay = domainObject.configuration.imageLoadDelayInMilliSeconds;
if (!imageLoadDelay) {
openmctInstance.objects.mutate(domainObject, 'configuration.imageLoadDelayInMilliSeconds', DEFAULT_IMAGE_LOAD_DELAY_IN_MILISECONDS);
return DEFAULT_IMAGE_LOAD_DELAY_IN_MILISECONDS;
}
if (imageLoadDelay < MIN_IMAGE_LOAD_DELAY_IN_MILISECONDS) {
openmctInstance.objects.mutate(domainObject, 'configuration.imageLoadDelayInMilliSeconds', MIN_IMAGE_LOAD_DELAY_IN_MILISECONDS);
return MIN_IMAGE_LOAD_DELAY_IN_MILISECONDS;
}
2017-05-22 21:40:35 +00:00
return imageLoadDelay;
}
function getRealtimeProvider() {
return {
supportsSubscribe: domainObject => domainObject.type === 'example.imagery',
subscribe: (domainObject, callback) => {
const delay = getImageLoadDelay(domainObject);
const interval = setInterval(() => {
callback(pointForTimestamp(Date.now(), domainObject.name, getImageSamples(domainObject.configuration), delay));
}, delay);
return () => {
clearInterval(interval);
};
}
};
}
function getHistoricalProvider() {
return {
supportsRequest: (domainObject, options) => {
return domainObject.type === 'example.imagery'
&& options.strategy !== 'latest';
},
request: (domainObject, options) => {
const delay = getImageLoadDelay(domainObject);
let start = options.start;
const end = Math.min(options.end, Date.now());
const data = [];
while (start <= end && data.length < delay) {
data.push(pointForTimestamp(start, domainObject.name, getImageSamples(domainObject.configuration), delay));
start += delay;
}
return Promise.resolve(data);
}
};
}
function getLadProvider() {
return {
supportsRequest: (domainObject, options) => {
return domainObject.type === 'example.imagery'
&& options.strategy === 'latest';
},
request: (domainObject, options) => {
const delay = getImageLoadDelay(domainObject);
return Promise.resolve([pointForTimestamp(Date.now(), domainObject.name, delay)]);
}
};
}
function pointForTimestamp(timestamp, name, imageSamples, delay) {
const url = imageSamples[Math.floor(timestamp / delay) % imageSamples.length];
const urlItems = url.split('/');
const imageDownloadName = `example.imagery.${urlItems[urlItems.length - 1]}`;
return {
name,
utc: Math.floor(timestamp / delay) * delay,
local: Math.floor(timestamp / delay) * delay,
url,
sunOrientation: getCompassValues(0, 360),
cameraPan: getCompassValues(0, 360),
heading: getCompassValues(0, 360),
imageDownloadName
};
}