ThreeAmmoWebWorker/webworker.html at master · Mahdi7s/ThreeAmmoWebWorker · GitHub

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// Author: www.mahdi7s.com

<!DOCTYPE html>
<html>
<head>
    <script type="text/javascript" src="Three.js"></script>
    <script type="text/javascript" src="ammo.js"></script>
    <style type="text/css">
        * {
            overflow: hidden;
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body>
    <script type="text/javascript">
        "use strict";

        (function () { //extensions
            Ammo.btVector3.prototype.toThree = function () {
                return new THREE.Vector3(this.x, this.y, this.z);
            };
        })();

        var scene, renderer, camera, worker, curve, curvePoints, sphere, simulating = false, updateCameraPos = true, clock = new THREE.Clock();

        init();
        initPhysicsSimulation();
        animate();

        function init() {
            worker = new Worker("phworker.js");

            // scene
            scene = new THREE.Scene();
            scene.fog = new THREE.Fog(0xD9E9FF, 1000, 10000);

            // camera
            camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 1, 10000);
            camera.position.set(0, 500, 750);
            camera.startPosition = camera.position.clone();
            camera.orbitTheta = 0;
            scene.add(camera);

            // some light !
            scene.add(new THREE.AmbientLight(0xD6D98F));

            var light = new THREE.DirectionalLight(0xEFF2A7, 1.6, 1000);
            light.position.set(0, 500, 500);
            light.castShadow = true;
            light.shadowMapWidth = 2048;
            light.shadowMapHeight = 2048;

            light.shadowCameraFar = 1000;
            light.shadowDarkness = 0.7;

            scene.add(light);

            // Plane
            var plane = new THREE.Mesh(new THREE.PlaneGeometry(10000, 10000), new THREE.MeshLambertMaterial({ map: THREE.ImageUtils.loadTexture("grass.jpg") }));
            plane.receiveShadow = true;
            plane.material.map.wrapT = plane.material.map.wrapS = THREE.RepeatWrapping;
            plane.material.map.repeat.set(10, 10);
            scene.add(plane);


            // curve shape
            var shape = new THREE.Shape(), sWidth = 600, sHeight = 400;
            shape.moveTo(0, 0);
            shape.bezierCurveTo(0, sHeight, sWidth, sHeight, sWidth, 0);
            shape.lineTo(sWidth, sHeight);
            shape.lineTo(0, sHeight);
            shape.moveTo(0, 0);

            var extrudeSettings = { amount: 100 };
            var shape3d = shape.extrude(extrudeSettings);

            var shapePoints = shape.createPointsGeometry();
            var shapeSpacedPoints = shape.createSpacedPointsGeometry();
            var material = new THREE.MeshLambertMaterial({ map: THREE.ImageUtils.loadTexture("brown.png") });
            material.map.wrapT = material.map.wrapS = THREE.RepeatWrapping;
            material.map.repeat.set(30, 30);

            curve = new THREE.Mesh(shape3d, material);
            curve.name = "curve";
            curve.castShadow = true;
            curve.receiveShadow = true;
            curve.position.set(-sWidth / 2, sHeight, extrudeSettings.amount / 2);
            curve.rotation.x = Math.PI;
            curvePoints = shape3d.vertices;
            scene.add(curve);

            // ball
            var sphereRadius = 25;
            sphere = new THREE.Mesh(new THREE.SphereGeometry(sphereRadius, 32, 32), new THREE.MeshBasicMaterial({ map: THREE.ImageUtils.loadTexture("ball.jpeg") }));
            sphere.name = "sphere";
            sphere.useQuaternion = true;
            sphere.castShadow = true;
            sphere.position.set(-sWidth / 2 + sphereRadius, 1000, 0);
            scene.add(sphere);

            renderer = new THREE.WebGLRenderer({ antialiase: true });
            renderer.gammaInput = renderer.shadowMapEnabled = renderer.physicallyBasedShading = renderer.gammaOutput = true;
            renderer.setSize(window.innerWidth, window.innerHeight);
            renderer.setClearColor(scene.fog.color);

            document.body.appendChild(renderer.domElement);

            window.addEventListener("mousedown", function () {
                updateCameraPos = !updateCameraPos;
            }, false);
        }

        function initPhysicsSimulation() {
            worker.postMessage({ task: "init" });

            // collecting curve info for worker

            var faces = curve.geometry.faces,
			vertices = curve.geometry.vertices,
			curveInfo = [];

            faces.forEach(function (f, i, arr) {
                var convex = [{ x: vertices[f.a].x, y: vertices[f.a].y, z: vertices[f.a].z },
                { x: vertices[f.b].x, y: vertices[f.b].y, z: vertices[f.b].z },
                                { x: vertices[f.c].x, y: vertices[f.c].y, z: vertices[f.c].z }];
                f.d && convex.push({ x: vertices[f.d].x, y: vertices[f.d].y, z: vertices[f.d].z });

                curveInfo.push(convex);
            });

            worker.postMessage({ task: "addObjectToSimulationWorld", meshName: curve.name, info: curveInfo, shape: "concave", pos: { x: curve.position.x, y: curve.position.y, z: curve.position.z }, rot: { x: curve.rotation.x, y: curve.rotation.y, z: curve.rotation.z }, friction: 0.8 });
            worker.postMessage({ task: "addObjectToSimulationWorld", meshName: sphere.name, shape: "sphere", friction: 0.8, restitution: 0.7/*, mass: 5*/, pos: { x: sphere.position.x, y: sphere.position.y, z: sphere.position.z }, rot: { x: sphere.rotation.x, y: sphere.rotation.y, z: sphere.rotation.z }, radius: sphere.geometry.boundingSphere.radius });

            worker.onmessage = function (evt) {
                var data = evt.data;
                if (!data) return;

                switch (data.task) {
                    case "syncMesh":
                        data.meshes.forEach(function (m, idx, arr) {
                            var mesh = scene.getChildByName(m.meshName);

                            mesh.quaternion.set(m.quat.x, m.quat.y, m.quat.z, m.quat.w);
                            mesh.position.set(m.pos.x, m.pos.y, m.pos.z);
                        });
                        simulating = false;
                        break;
                }
            };
        }

        function updateCamera() {
            if (!updateCameraPos) return;

            camera.orbitTheta += 0.008;
            var cosTheta = Math.cos(camera.orbitTheta),
			    sinTheta = Math.sin(camera.orbitTheta),
			    radius = camera.startPosition.z;

            camera.position.set(radius * cosTheta, camera.startPosition.y, radius * sinTheta);
            camera.lookAt(scene.position);
        }

        function animate() {
            if (!simulating) {
                simulating = true;
                worker.postMessage({ task: "simulate", dt: clock.getDelta() });
            }

            updateCamera();

            renderer.render(scene, camera);
            requestAnimationFrame(animate);
        }
	</script>
</body>
</html>