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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.
*****************************************************************************/
export default function PerformanceIndicator() {
return function install(openmct) {
let frames = 0;
let lastCalculated = performance.now();
const indicator = openmct.indicators.simpleIndicator();
indicator.text('~ fps');
indicator.statusClass('s-status-info');
openmct.indicators.add(indicator);
let rafHandle = requestAnimationFrame(incremementFrames);
openmct.on('destroy', () => {
cancelAnimationFrame(rafHandle);
});
function incremementFrames() {
let now = performance.now();
if ((now - lastCalculated) < 1000) {
frames++;
} else {
updateFPS(frames);
lastCalculated = now;
frames = 1;
}
rafHandle = requestAnimationFrame(incremementFrames);
}
function updateFPS(fps) {
indicator.text(`${fps} fps`);
if (fps >= 40) {
indicator.statusClass('s-status-on');
} else if (fps < 40 && fps >= 20) {
indicator.statusClass('s-status-warning');
} else {
indicator.statusClass('s-status-error');
}
}
};
}
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