bvh/helmetOctree.html at master · BabylonJSGuide/bvh · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <title>hitTest</title>

    <script src= "babylon.max.js"></script>
    <script src = babylon.gui.min.js></script>
    <script src= "babylon.glTFFileLoader.js"></script>
	<script src= "morton.js"></script>
    <script src= "bvhByNode.js"></script>
    <script src= "radix.js"></script>


    <style>
        html, body {
            overflow: hidden;
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
        }

        #renderCanvas {
            width: 100%;
            height: 100%;
            touch-action: none;
        }
    </style>
</head>
<body>
    <canvas id="renderCanvas"></canvas>
    <script>

if (BABYLON.Engine.isSupported()) {
    var canvas = document.getElementById("renderCanvas");
    var engine = new BABYLON.Engine(canvas, true);


var createScene = function () {

    // This creates a basic Babylon Scene object (non-mesh)
    var scene = new BABYLON.Scene(engine);

    var camera = new BABYLON.ArcRotateCamera("Camera", - Math.PI / 2, Math.PI / 2.2, 5, BABYLON.Vector3.Zero(), scene);

	camera.attachControl(canvas, true);

    // This creates a light, aiming 0,1,0 - to the sky (non-mesh)
    var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(0, 1, 0), scene);

    // Default intensity is 1. Let's dim the light a small amount
    light.intensity = 0.7;


	BABYLON.SceneLoader.ImportMesh("", "https://www.babylonjs.com/Assets/DamagedHelmet/glTF/", "DamagedHelmet.gltf", scene, function (meshes) {
        let box = meshes[1];
        box.subdivide(50);
        box.createOrUpdateSubmeshesOctree(64, 8);
        box.useOctreeForPicking = true;
        let gui = BABYLON.GUI.AdvancedDynamicTexture.CreateFullscreenUI("myUI");
        let button = BABYLON.GUI.Button.CreateSimpleButton("button", "Click to Generate Octree");
        button.top = "0px";
        button.left = "0px";
        button.width = "150px";
        button.height = "150px";
        button.cornerRadius = 20;
        button.thickness = 4;
        button.horizontalAlignment = BABYLON.GUI.Control.HORIZONTAL_ALIGNMENT_RIGHT;
        button.children[0].color = "#DFF9FB";
        button.children[0].fontSize = 24;
        button.color = "white";
        button.background = "blue";

        let button2 = BABYLON.GUI.Button.CreateSimpleButton("button2", "IntersectRay");
        button2.top = "0px";
        button2.left = "0px";
        button2.width = "150px";
        button2.height = "70px";
        button2.cornerRadius = 20;
        button2.thickness = 4;
        button2.horizontalAlignment = BABYLON.GUI.Control.HORIZONTAL_ALIGNMENT_RIGHT;
        button2.children[0].color = "#DFF9FB";
        button2.children[0].fontSize = 24;
        button2.color = "white";
        button2.background = "blue";
        button2.isVisible = false;

        let text1 = new BABYLON.GUI.TextBlock();
        text1.text = "";
        text1.color = "white";
        text1.fontSize = 24;
        text1.background = "blue";
        text1.width = "650px";
        text1.height = "70px";
        text1.cornerRadius = 20;
        text1.thickness = 4;
        text1.verticalAlignment = BABYLON.GUI.Control.VERTICAL_ALIGNMENT_TOP;
        text1.isVisible = false;

        gui.addControl(text1);

        let treeCluster;

        button.onPointerClickObservable.add(function () {
            button.isVisible = false
            box.subdivide(4)
            box.createOrUpdateSubmeshesOctree(64, 2);
            box.useOctreeForPicking = true;
            button2.isVisible = true;
        });

        button2.onPointerClickObservable.add(function () {
            button2.isVisible = false;
            let ray = new BABYLON.Ray(new BABYLON.Vector3(-8, 0, 0), BABYLON.Axis.X, 20);
            BABYLON.RayHelper.CreateAndShow(ray, scene, BABYLON.Color3.White());

            const t0 = performance.now();
            let hit;
            for (var k = 0; k < 10000; k++) {
                hit = box.intersects(ray);
            }
            const t1 = performance.now();
            text1.text = `Time for 10000 ray intersections ${t1 - t0} milliseconds.`;
            text1.isVisible = true;
        });

        gui.addControl(button);
        gui.addControl(button2);

    });

	return scene;

};


var scene = createScene();

engine.runRenderLoop(function () {
  scene.render();

});

window.addEventListener("resize", function () {
    engine.resize();
});
        }
    </script>
</body>
</html>