skyversation
/
cesium_example_auth


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439
							<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0,minimum-scale=1.0,maximum-scale=1.0" />
    <meta name="author" content="火星科技 http://mars3d.cn " />
    <meta name="apple-touch-fullscreen" content="yes" />
    <meta name="apple-mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-status-bar-style" content="black" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="x5-fullscreen" content="true" />
    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
    <!-- 标题及搜索关键字 -->
    <meta name="keywords" content="火星科技,cesium,3D,GIS,marsgis,三维,地球,地图,开发,框架,系统,示例,资料,模型,离线,外包,合肥,安徽,中国" />
    <meta
      name="description"
      content="火星科技 合肥火星 合肥火星科技 合肥火星科技有限公司 leaflet leaflet框架 leaflet开发 cesium cesium开发 cesium框架 三维 地球 模型  gis marsgis 地图离线 地图开发 地图框架 地图外包 框架 开发 外包  地图离线 二维地图 三维地图 全景漫游 地理信息系统 云GIS 三维GIS GIS平台 WebGIS"
    />


    <link rel="shortcut icon" type="image/x-icon" href="" />
    <title>ammo物理引擎扩展支持  </title>

    <!--第三方lib-->
    <script
      type="text/javascript"
      src="../lib/include-lib.js"
      libpath="../lib/"
      include="jquery,font-awesome,bootstrap,layer,haoutil,turf,mars3d,cesium-meshVisualizer"
    ></script>

    <link href="css/style.css" rel="stylesheet" />
  </head>
  <body class="dark">
    <div id="mars3dContainer" class="mars3d-container"></div>

    <!-- 面板 -->
    <div class="infoview">操作提示： Q 左摆动、 A 右摆动</div>


    <script src="./js/common.js"></script>
    <script type="text/javascript">
      "use script"; //开发环境建议开启严格模式

      var map;

      function initMap(options) {
        //合并属性参数，可覆盖config.json中的对应配置
        var mapOptions = mars3d.Util.merge(options, {
          scene: {
            center: { lat: 31.834535, lng: 117.21992, alt: 80, heading: 38, pitch: -34 },
            fxaa: true,
          },
        });

        //创建三维地球场景
        map = new mars3d.Map("mars3dContainer", mapOptions);

        var MeshVisualizer = Cesium.MeshVisualizer;
        var Mesh = Cesium.Mesh;
        var MeshMaterial = Cesium.MeshMaterial;
        var FramebufferTexture = Cesium.FramebufferTexture;
        var GeometryUtils = Cesium.GeometryUtils;
        var LOD = Cesium.LOD;
        var PlaneBufferGeometry = Cesium.PlaneBufferGeometry;
        var BasicMeshMaterial = Cesium.BasicMeshMaterial;
        var MeshPhongMaterial = Cesium.MeshPhongMaterial;

        var center = Cesium.Cartesian3.fromDegrees(117.220206, 31.834866, 50);
        var modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(center);

        var meshVisualizer = new MeshVisualizer({
          modelMatrix: modelMatrix,
          up: { y: 1 },
          referenceAxisParameter: {
            length: 100,
            width: 0.05,
            headLength: 2,
            headWidth: 0.1,
          },
        });
        map.scene.primitives.add(meshVisualizer);
        meshVisualizer.showReference = true; //显示坐标轴

        Ammo().then(function () {
          // Physics variables
          var gravityConstant = -9.8;
          var collisionConfiguration;
          var dispatcher;
          var broadphase;
          var solver;
          var physicsWorld;
          var rigidBodies = [];
          var margin = 0.05;
          var hinge;
          var cloth;
          var transformAux1 = new Ammo.btTransform();
          var armMovement = 0;
          var softBodySolver;

          function initPhysics() {
            // Physics configuration

            collisionConfiguration = new Ammo.btSoftBodyRigidBodyCollisionConfiguration();
            dispatcher = new Ammo.btCollisionDispatcher(collisionConfiguration);
            broadphase = new Ammo.btDbvtBroadphase();
            solver = new Ammo.btSequentialImpulseConstraintSolver();
            softBodySolver = new Ammo.btDefaultSoftBodySolver();
            physicsWorld = new Ammo.btSoftRigidDynamicsWorld(dispatcher, broadphase, solver, collisionConfiguration, softBodySolver);
            physicsWorld.setGravity(new Ammo.btVector3(0, gravityConstant, 0));
            physicsWorld.getWorldInfo().set_m_gravity(new Ammo.btVector3(0, gravityConstant, 0));
          }

          function createRandomColor() {
            return Cesium.Color.fromRandom({ alpha: 1 }); //fromRgba(Math.floor(Math.random() * (1 << 24)));
          }
          function createMaterial() {
            return new MeshPhongMaterial({
              defaultColor: createRandomColor(),
              side: MeshMaterial.Sides.DOUBLE,
              translucent: false,
            });
          }
          function createObjects() {
            var pos = new Cesium.Cartesian3();
            var quat = new Cesium.Quaternion();

            // Ground
            (pos.x = 0), (pos.y = -0.5), (pos.z = 0);
            (quat.x = 0), (quat.y = 0), (quat.z = 0), (quat.w = 1);
            var ground = createParalellepiped(
              40,
              1,
              40,
              0,
              pos,
              quat,
              new MeshPhongMaterial({
                defaultColor: "rgb(125,125,125)",
                side: MeshMaterial.Sides.DOUBLE,
                translucent: false,
              })
            );

            // Wall
            var brickMass = 0.5;
            var brickLength = 1.2;
            var brickDepth = 0.6;
            var brickHeight = brickLength * 0.5;
            var numBricksLength = 6;
            var numBricksHeight = 8;
            var z0 = -numBricksLength * brickLength * 0.5;

            (pos.x = 0), (pos.y = brickHeight * 0.5), (pos.z = z0);
            (quat.x = 0), (quat.y = 0), (quat.z = 0), (quat.w = 1);
            for (var j = 0; j < numBricksHeight; j++) {
              var oddRow = j % 2 == 1;

              pos.z = z0;

              if (oddRow) {
                pos.z -= 0.25 * brickLength;
              }

              var nRow = oddRow ? numBricksLength + 1 : numBricksLength;
              for (let i = 0; i < nRow; i++) {
                var brickLengthCurrent = brickLength;
                var brickMassCurrent = brickMass;
                if (oddRow && (i == 0 || i == nRow - 1)) {
                  brickLengthCurrent *= 0.5;
                  brickMassCurrent *= 0.5;
                }

                var brick = createParalellepiped(brickDepth, brickHeight, brickLengthCurrent, brickMassCurrent, pos, quat, createMaterial());

                if (oddRow && (i == 0 || i == nRow - 2)) {
                  pos.z += 0.75 * brickLength;
                } else {
                  pos.z += brickLength;
                }
              }
              pos.y += brickHeight;
            }

            // The cloth
            // Cloth graphic object
            var clothWidth = 4;
            var clothHeight = 3;
            var clothNumSegmentsZ = clothWidth * 5;
            var clothNumSegmentsY = clothHeight * 5;
            var clothSegmentLengthZ = clothWidth / clothNumSegmentsZ;
            var clothSegmentLengthY = clothHeight / clothNumSegmentsY;
            var clothPos = new Cesium.Cartesian3(-3, 3, 2);

            var clothGeometry = new PlaneBufferGeometry(clothWidth, clothHeight, clothNumSegmentsZ, clothNumSegmentsY);

            var clothMaterial = new MeshPhongMaterial({
              defaultColor: "rgb(255,255,255)",
              side: MeshMaterial.Sides.DOUBLE,
              translucent: false,
            });

            cloth = new Mesh(clothGeometry, clothMaterial);
            GeometryUtils.rotateY(cloth.geometry, Math.PI * 0.5);
            GeometryUtils.translate(cloth.geometry, clothPos.x, clothPos.y + clothHeight * 0.5, clothPos.z - clothWidth * 0.5);
            GeometryUtils.computeVertexNormals(cloth.geometry);
            meshVisualizer.add(cloth);

            // Cloth physic object
            var softBodyHelpers = new Ammo.btSoftBodyHelpers();
            var clothCorner00 = new Ammo.btVector3(clothPos.x, clothPos.y + clothHeight, clothPos.z);
            var clothCorner01 = new Ammo.btVector3(clothPos.x, clothPos.y + clothHeight, clothPos.z - clothWidth);
            var clothCorner10 = new Ammo.btVector3(clothPos.x, clothPos.y, clothPos.z);
            var clothCorner11 = new Ammo.btVector3(clothPos.x, clothPos.y, clothPos.z - clothWidth);
            var clothSoftBody = softBodyHelpers.CreatePatch(
              physicsWorld.getWorldInfo(),
              clothCorner00,
              clothCorner01,
              clothCorner10,
              clothCorner11,
              clothNumSegmentsZ + 1,
              clothNumSegmentsY + 1,
              0,
              true
            );
            var sbConfig = clothSoftBody.get_m_cfg();
            sbConfig.set_viterations(10);
            sbConfig.set_piterations(10);

            clothSoftBody.setTotalMass(0.9, false);
            Ammo.castObject(clothSoftBody, Ammo.btCollisionObject)
              .getCollisionShape()
              .setMargin(margin * 3);
            physicsWorld.addSoftBody(clothSoftBody, 1, -1);
            cloth.physicsBody = clothSoftBody;
            // Disable deactivation
            clothSoftBody.setActivationState(4);

            // The base
            var armMass = 2;
            var armLength = 3 + clothWidth;
            var pylonHeight = clothPos.y + clothHeight;
            var baseMaterial = new MeshPhongMaterial({
              defaultColor: "rgb(255,255,0)",
              side: MeshMaterial.Sides.DOUBLE,
              translucent: false,
            });
            (pos.x = clothPos.x), (pos.y = 0.1), (pos.z = clothPos.z - armLength);
            (quat.x = 0), (quat.y = 0), (quat.z = 0), (quat.w = 1);
            var base = createParalellepiped(1, 0.2, 1, 0, pos, quat, baseMaterial);

            (pos.x = clothPos.x), (pos.y = 0.5 * pylonHeight), (pos.z = clothPos.z - armLength);
            var pylon = createParalellepiped(0.4, pylonHeight, 0.4, 0, pos, quat, baseMaterial);

            (pos.x = clothPos.x), (pos.y = pylonHeight + 0.2), (pos.z = clothPos.z - 0.5 * armLength);
            var arm = createParalellepiped(0.4, 0.4, armLength + 0.4, armMass, pos, quat, baseMaterial);

            // Glue the cloth to the arm
            var influence = 0.5;
            clothSoftBody.appendAnchor(0, arm.physicsBody, false, influence);
            clothSoftBody.appendAnchor(clothNumSegmentsZ, arm.physicsBody, false, influence);

            // Hinge constraint to move the arm
            var pivotA = new Ammo.btVector3(0, pylonHeight * 0.5, 0);
            var pivotB = new Ammo.btVector3(0, -0.2, -armLength * 0.5);
            var axis = new Ammo.btVector3(0, 1, 0);
            hinge = new Ammo.btHingeConstraint(pylon.physicsBody, arm.physicsBody, pivotA, pivotB, axis, axis, true);
            physicsWorld.addConstraint(hinge, true);
          }

          function createParalellepiped(sx, sy, sz, mass, pos, quat, material) {
            var threeObject = new Mesh(
              Cesium.BoxGeometry.fromDimensions({
                dimensions: new Cesium.Cartesian3(sx, sy, sz),
                vertexFormat: new Cesium.VertexFormat({
                  position: true,
                  st: true,
                  normal: true,
                }),
              }),
              material
            );

            threeObject.quaternion = new Cesium.Quaternion();
            threeObject.geometry.attributes.uv = threeObject.geometry.attributes.st;
            threeObject.geometry.attributes.st = undefined;
            var shape = new Ammo.btBoxShape(new Ammo.btVector3(sx * 0.5, sy * 0.5, sz * 0.5));
            shape.setMargin(margin);

            createRigidBody(threeObject, shape, mass, pos, quat);

            return threeObject;
          }

          function createRigidBody(threeObject, physicsShape, mass, pos, quat) {
            Cesium.Cartesian3.clone(pos, threeObject.position);
            Cesium.Quaternion.clone(quat, threeObject.quaternion);

            var transform = new Ammo.btTransform();
            transform.setIdentity();
            transform.setOrigin(new Ammo.btVector3(pos.x, pos.y, pos.z));
            transform.setRotation(new Ammo.btQuaternion(quat.x, quat.y, quat.z, quat.w));
            var motionState = new Ammo.btDefaultMotionState(transform);

            var localInertia = new Ammo.btVector3(0, 0, 0);
            physicsShape.calculateLocalInertia(mass, localInertia);

            var rbInfo = new Ammo.btRigidBodyConstructionInfo(mass, motionState, physicsShape, localInertia);
            var body = new Ammo.btRigidBody(rbInfo);

            threeObject.physicsBody = body;

            meshVisualizer.add(threeObject);

            if (mass > 0) {
              rigidBodies.push(threeObject);

              // Disable deactivation
              body.setActivationState(4);
            }

            physicsWorld.addRigidBody(body);
          }

          //deltaTime单位是：秒/s
          function updatePhysics(deltaTime) {
            // Hinge control
            hinge.enableAngularMotor(true, 0.8 * armMovement, 50);

            // Step world
            physicsWorld.stepSimulation(deltaTime, 10);

            // Update cloth
            var softBody = cloth.physicsBody;
            var clothPositions = cloth.geometry.attributes.position.values;
            var numVerts = clothPositions.length / 3;
            var nodes = softBody.get_m_nodes();
            var indexFloat = 0;
            for (let i = 0; i < numVerts; i++) {
              var node = nodes.at(i);
              var nodePos = node.get_m_x();
              clothPositions[indexFloat++] = nodePos.x();
              clothPositions[indexFloat++] = nodePos.y();
              clothPositions[indexFloat++] = nodePos.z();
            }

            cloth.geometry.attributes.position.needsUpdate = true;
            if (cloth.geometry.primitiveType == Cesium.PrimitiveType.TRIANGLES) {
              // Cesium.GeometryPipeline.computeNormal(cloth.geometry);
              GeometryUtils.computeVertexNormals(cloth.geometry);
            }

            // Update rigid bodies
            for (let i = 0, il = rigidBodies.length; i < il; i++) {
              var objGraph = rigidBodies[i];
              var objPhys = objGraph.physicsBody;
              var ms = objPhys.getMotionState();
              if (ms) {
                ms.getWorldTransform(transformAux1);
                var p = transformAux1.getOrigin();
                var q = transformAux1.getRotation();
                objGraph.position.x = p.x();
                objGraph.position.y = p.y();
                objGraph.position.z = p.z();
                objGraph.quaternion.x = q.x();
                objGraph.quaternion.y = q.y();
                objGraph.quaternion.z = q.z();
                objGraph.quaternion.w = q.w();
                //objGraph.needsUpdate = true;
                objGraph.modelMatrixNeedsUpdate = true;
              }
            }
          }

          var start = false;
          function initInput() {
            window.addEventListener(
              "keydown",
              function (event) {
                if (!start) {
                  return;
                }
                switch (event.keyCode) {
                  // Q
                  case 81:
                    armMovement = 1;
                    break;

                  // A
                  case 65:
                    armMovement = -1;
                    break;
                }
              },
              false
            );

            window.addEventListener(
              "keyup",
              function (event) {
                armMovement = 0;
              },
              false
            );
          }

          var startTime = new Date();
          function update(frameState) {
            var deltaTime = (new Date() - startTime) / 1000.0;
            updatePhysics(deltaTime);
            startTime = new Date();
          }

          var init = false;
          setTimeout(function () {
            if (!init) {
              initPhysics();

              createObjects();

              initInput();
              init = true;
            }
            if (!start) {
              meshVisualizer.beforeUpdate.addEventListener(update);
              start = true;
            } else {
              meshVisualizer.beforeUpdate.removeEventListener(update);
              start = false;
            }
          }, 1000 * 3);
        });

        //});
      }
    </script>
  </body>
</html>