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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x | import Frozen from "../Core/Frozen.js";
import defined from "../Core/defined.js";
import destroyObject from "../Core/destroyObject.js";
import DeveloperError from "../Core/DeveloperError.js";
import getTimestamp from "../Core/getTimestamp.js";
import getElement from "../DataSources/getElement.js";
/**
* @private
*/
function PerformanceDisplay(options) {
options = options ?? Frozen.EMPTY_OBJECT;
const container = getElement(options.container);
//>>includeStart('debug', pragmas.debug);
Iif (!defined(container)) {
throw new DeveloperError("container is required");
}
//>>includeEnd('debug');
this._container = container;
const display = document.createElement("div");
display.className = "cesium-performanceDisplay";
const fpsElement = document.createElement("div");
fpsElement.className = "cesium-performanceDisplay-fps";
this._fpsText = document.createTextNode("");
fpsElement.appendChild(this._fpsText);
const msElement = document.createElement("div");
msElement.className = "cesium-performanceDisplay-ms";
this._msText = document.createTextNode("");
msElement.appendChild(this._msText);
display.appendChild(msElement);
display.appendChild(fpsElement);
this._container.appendChild(display);
this._lastFpsSampleTime = getTimestamp();
this._lastMsSampleTime = getTimestamp();
this._fpsFrameCount = 0;
this._msFrameCount = 0;
this._throttled = false;
const throttledElement = document.createElement("div");
throttledElement.className = "cesium-performanceDisplay-throttled";
this._throttledText = document.createTextNode("");
throttledElement.appendChild(this._throttledText);
display.appendChild(throttledElement);
}
Object.defineProperties(PerformanceDisplay.prototype, {
/**
* The display should indicate the FPS is being throttled.
* @memberof PerformanceDisplay.prototype
*
* @type {boolean}
*/
throttled: {
get: function () {
return this._throttled;
},
set: function (value) {
Eif (this._throttled === value) {
return;
}
if (value) {
this._throttledText.nodeValue = "(throttled)";
} else {
this._throttledText.nodeValue = "";
}
this._throttled = value;
},
},
});
/**
* Update the display. This function should only be called once per frame, because
* each call records a frame in the internal buffer and redraws the display.
*
* @param {boolean} [renderedThisFrame=true] If provided, the FPS count will only update and display if true.
*/
PerformanceDisplay.prototype.update = function (renderedThisFrame) {
const time = getTimestamp();
const updateDisplay = renderedThisFrame ?? true;
this._fpsFrameCount++;
const fpsElapsedTime = time - this._lastFpsSampleTime;
Iif (fpsElapsedTime > 1000) {
let fps = "N/A";
if (updateDisplay) {
fps = ((this._fpsFrameCount * 1000) / fpsElapsedTime) | 0;
}
this._fpsText.nodeValue = `${fps} FPS`;
this._lastFpsSampleTime = time;
this._fpsFrameCount = 0;
}
this._msFrameCount++;
const msElapsedTime = time - this._lastMsSampleTime;
Iif (msElapsedTime > 200) {
let ms = "N/A";
if (updateDisplay) {
ms = (msElapsedTime / this._msFrameCount).toFixed(2);
}
this._msText.nodeValue = `${ms} MS`;
this._lastMsSampleTime = time;
this._msFrameCount = 0;
}
};
/**
* Destroys the WebGL resources held by this object.
*/
PerformanceDisplay.prototype.destroy = function () {
return destroyObject(this);
};
export default PerformanceDisplay;
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