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Adding example of camera.perspective.far change during navigation #2005

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231 changes: 231 additions & 0 deletions examples/performance/FastNavPlugin_changeCameraPerspectiveFar.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>xeokit Example</title>
<link href="../css/pageStyle.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/js/all.min.js"></script>
<script src="../libs/dat.gui.min.js" type="text/javascript"></script>
<link href="../css/dat-gui-light-style.css" rel="stylesheet"/>
</head>
<body>
<input type="checkbox" id="info-button"/>
<label for="info-button" class="info-button"><i class="far fa-3x fa-question-circle"></i></label>
<canvas id="myCanvas"></canvas>
<div class="slideout-sidebar">
<img class="info-icon" src="../../assets/images/performance_icon.png"/>
<h1>FastNavPlugin</h1>
<h2>Makes interaction smoother</h2>
<p>Whenever the camera moves, <a href="../../docs/class/src/plugins/FastNavPlugin/FastNavPlugin.js~FastNavPlugin.html"
target="_other">FastNavPlugin</a> it uses callback to change camera.perspective.far during navigation.</p>
<h3>Stats</h3>
<ul>
<li>
<div id="time">Loading JavaScript modules...</div>
</li>
</ul>
<h3>Customize</h3>
<div id="myDatGuiContainer"></div>
<h3>Components Used</h3>
<ul>
<li>
<a href="../../docs/class/src/viewer/Viewer.js~Viewer.html"
target="_other">Viewer</a>
</li>
<li>
<a href="../../docs/class/src/plugins/XKTLoaderPlugin/XKTLoaderPlugin.js~XKTLoaderPlugin.html"
target="_other">XKTLoaderPlugin</a>
</li>
<li>
<a href="../../docs/class/src/plugins/FastNavPlugin/FastNavPlugin.js~FastNavPlugin.html"
target="_other">FastNavPlugin</a>
</li>
<li>
<a href="http://openifcmodel.cs.auckland.ac.nz/Model/Details/316"
target="_other">Model source</a>
</li>
</ul>
</div>
</body>
<script type="module">

import {
FastNavPlugin,
Viewer,
XKTLoaderPlugin,
} from "../../dist/xeokit-sdk.min.es.js";

//------------------------------------------------------------------------------------------------------------------
// Create a Viewer
//------------------------------------------------------------------------------------------------------------------

const viewer = new Viewer({
canvasId: "myCanvas",
transparent: true,
pbrEnabled: false
});

viewer.scene.camera.eye = [1844213.5706688855,263.435007378793,-5174747.600668465];
viewer.scene.camera.look = [1843946.9437705153,185.07615356281406,-5174906.670642107];
viewer.scene.camera.up = [-0.21015345043981642,0.9695957535179334,-0.12537783706951888];

//------------------------------------------------------------------------------------------------------------------
// Create a callback function that changes FAR value and returns callback which reverts that behaviour
//------------------------------------------------------------------------------------------------------------------

const lowQualityCameraPerspectiveFar = 2000;
const highQualityCameraPerspectiveFar = 100000;
let cameraChangedDuringRevert = false;

function changeCameraPerspectiveFar() {
if (cameraChangedDuringRevert) {
cameraChangedDuringRevert = false;
return null;
}
else {
viewer.camera.perspective.far = lowQualityCameraPerspectiveFar;

return function revert() {
viewer.camera.perspective.far = highQualityCameraPerspectiveFar;
cameraChangedDuringRevert = true;
}
}
}

//------------------------------------------------------------------------------------------------------------------
// Install FastNavPlugin
//------------------------------------------------------------------------------------------------------------------

const fastNavPlugin = new FastNavPlugin(viewer, {
hideEdges: false,
delayBeforeRestore: true,
delayBeforeRestoreSeconds: 0.2,
onMoved: changeCameraPerspectiveFar,
});

//----------------------------------------------------------------------------------------------------------------------
// Load nine CityGML models
//----------------------------------------------------------------------------------------------------------------------

const xktLoader = new XKTLoaderPlugin(viewer);

const t0 = performance.now();

document.getElementById("time").innerHTML = "Loading model 1 of 9";

xktLoader.load({
id: "lyon1",
src: "../../assets/models/xkt/v7/Lyon/Lyon1.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 2 of 9";

xktLoader.load({
id: "lyon2",
src: "../../assets/models/xkt/v7/Lyon/Lyon2.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 3 of 9";

xktLoader.load({
id: "lyon3",
src: "../../assets/models/xkt/v7/Lyon/Lyon3.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 4 of 9";

xktLoader.load({
id: "lyon4",
src: "../../assets/models/xkt/v7/Lyon/Lyon4.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 5 of 9";

xktLoader.load({
id: "Lyon5",
src: "../../assets/models/xkt/v7/Lyon/Lyon5.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 6 of 9";

xktLoader.load({
id: "Lyon6",
src: "../../assets/models/xkt/v7/Lyon/Lyon6.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 7 of 9";

xktLoader.load({
id: "Lyon7",
src: "../../assets/models/xkt/v7/Lyon/Lyon7.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 8 of 9";

xktLoader.load({
id: "Lyon8",
src: "../../assets/models/xkt/v7/Lyon/Lyon8.xkt",
edges: true,
saoEnabled: true,
dtxEnabled: true
}).on("loaded", () => {

document.getElementById("time").innerHTML = "Loading model 9 of 9";

const lyon9 = xktLoader.load({
id: "Lyon9",
src: "../../assets/models/xkt/v7/Lyon/Lyon9.xkt",
edges: true,
saoEnabled: true
});

lyon9.on("loaded", () => {

let numEntities = 0;

for (let id in viewer.scene.models) {
const sceneModel = viewer.scene.models[id];
numEntities += sceneModel.numEntities;
}

const t1 = performance.now();

document.getElementById("time").innerHTML = "Loaded 9 models in " + Math.floor((t1 - t0)) / 1000 + " seconds<br>Objects: " + numEntities;

});
});
});
});
});
});
});
});
});

window.viewer = viewer;

</script>
</html>
1 change: 1 addition & 0 deletions examples/performance/index.html
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Expand Up @@ -264,6 +264,7 @@
["FastNavPlugin_hideElementsWithComplexGeometry", "FastNavPlugin - hiding elements with complex geometries while user interacts"],
["FastNavPlugin_hideElementsWithTypes", "FastNavPlugin - hiding elements with specific type while user interacts"],
["FastNavPlugin_showElementsWithTypes", "FastNavPlugin - show elements with specific type only while user interacts"],
["FastNavPlugin_changeCameraPerspectiveFar", "FastNavPlugin - changes camera.perspective.far while user interacts"],
],

"Experiments": [
Expand Down