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[Imagery] Add example imagery

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Add a telemetry source for example imagery to support development
of a view for image telemetry, WTD-1170.
This commit is contained in:
Victor Woeltjen 2015-06-09 15:24:29 -07:00
parent bc6b3f8902
commit 4320d9be95
3 changed files with 223 additions and 0 deletions
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42
example/imagery/bundle.json Normal file
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{
"name": "Imagery",
"description": "Example of a component that produces image telemetry.",
"extensions": {
"components": [
{
"implementation": "ImageTelemetryProvider.js",
"type": "provider",
"provides": "telemetryService",
"depends": [ "$q", "$timeout" ]
}
],
"types": [
{
"key": "imagery",
"name": "Example Imagery",
"glyph": "T",
"features": "creation",
"model": {
"telemetry": {}
},
"telemetry": {
"source": "imagery",
"domains": [
{
"name": "Time",
"key": "time",
"format": "timestamp"
}
],
"ranges": [
{
"name": "Image",
"key": "url",
"format": "imageUrl"
}
]
}
}
]
}
}

66
example/imagery/src/ImageTelemetry.js Normal file
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/*****************************************************************************
* Open MCT Web, Copyright (c) 2014-2015, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT Web 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 Web 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.
*****************************************************************************/
/*global define,Promise*/
/**
* Module defining SinewaveTelemetry. Created by vwoeltje on 11/12/14.
*/
define(
[],
function () {
"use strict";
var firstObservedTime = Date.now(),
images = [
"http://www.nasa.gov/393811main_Palomar_ao_bouchez_10s_after_impact_4x3_946-710.png",
"http://www.nasa.gov/393821main_Palomar_ao_bouchez_15s_after_impact_4x3_946-710.png",
"http://www.nasa.gov/images/content/393801main_CfhtVeillet2_4x3_516-387.jpg",
"http://www.nasa.gov/images/content/392790main_1024_768_GeminiNorth_NightBeforeImpact_946-710.jpg"
].map(function (url, index) {
return {
timestamp: firstObservedTime + 1000 * index,
url: url
};
});
/**
*
* @constructor
*/
function ImageTelemetry() {
return {
getPointCount: function () {
return Math.floor((Date.now() - firstObservedTime) / 1000);
},
getDomainValue: function (i, domain) {
return images[i % images.length].timestamp;
},
getRangeValue: function (i, range) {
return images[i % images.length].url;
}
};
}
return ImageTelemetry;
}
);

115
example/imagery/src/ImageTelemetryProvider.js Normal file
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/*****************************************************************************
* Open MCT Web, Copyright (c) 2014-2015, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT Web 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 Web 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.
*****************************************************************************/
/*global define,Promise*/
/**
* Module defining SinewaveTelemetryProvider. Created by vwoeltje on 11/12/14.
*/
define(
["./ImageTelemetry"],
function (ImageTelemetry) {
"use strict";
/**
*
* @constructor
*/
function ImageTelemetryProvider($q, $timeout) {
var subscriptions = [];
//
function matchesSource(request) {
return request.source === "imagery";
}
// Used internally; this will be repacked by doPackage
function generateData(request) {
return {
key: request.key,
telemetry: new ImageTelemetry()
};
}
//
function doPackage(results) {
var packaged = {};
results.forEach(function (result) {
packaged[result.key] = result.telemetry;
});
// Format as expected (sources -> keys -> telemetry)
return { imagery: packaged };
}
function requestTelemetry(requests) {
return $timeout(function () {
return doPackage(requests.filter(matchesSource).map(generateData));
}, 0);
}
function handleSubscriptions() {
subscriptions.forEach(function (subscription) {
var requests = subscription.requests;
subscription.callback(doPackage(
requests.filter(matchesSource).map(generateData)
));
});
}
function startGenerating() {
$timeout(function () {
handleSubscriptions();
if (subscriptions.length > 0) {
startGenerating();
}
}, 1000);
}
function subscribe(callback, requests) {
var subscription = {
callback: callback,
requests: requests
};
function unsubscribe() {
subscriptions = subscriptions.filter(function (s) {
return s !== subscription;
});
}
subscriptions.push(subscription);
if (subscriptions.length === 1) {
startGenerating();
}
return unsubscribe;
}
return {
requestTelemetry: requestTelemetry,
subscribe: subscribe
};
}
return ImageTelemetryProvider;
}
);