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cesium_example_auth


			
				
					
						
						
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							<!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: 31.83456, lng: 117.219861, alt: 83, heading: 46, pitch: -35 },
            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 MeshPhongMaterial = Cesium.MeshPhongMaterial;
        var BasicMeshMaterial = Cesium.BasicMeshMaterial;
        var BasicGeometry = Cesium.BasicGeometry;
        var LOD = Cesium.LOD;

        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

        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,
          });
        }

        Cesium.Cartesian3.prototype.set = function (x, y, z) {
          this.x = x;
          this.y = y;
          this.z = z;
        };
        Cesium.Cartesian3.prototype.copy = function (src) {
          this.x = src.x;
          this.y = src.y;
          this.z = src.z;
        };

        Cesium.Cartesian2.prototype.set = function (x, y) {
          this.x = x;
          this.y = y;
        };
        Cesium.Cartesian2.prototype.copy = function (src) {
          this.x = src.x;
          this.y = src.y;
        };
        Cesium.Quaternion.prototype.set = function (x, y, z, w) {
          this.x = x;
          this.y = y;
          this.z = z;
          this.w = w;
        };
        Cesium.Quaternion.prototype.copy = function (src) {
          this.x = src.x;
          this.y = src.y;
          this.z = src.z;
          this.w = src.w;
        };

        Ammo().then(function () {
          // - Global variables -

          // - Global variables -

          // 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 rope;
          var transformAux1 = new Ammo.btTransform();

          var time = 0;
          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 createObjects() {
            var pos = new Cesium.Cartesian3();
            var quat = new Cesium.Quaternion();

            // Ground
            pos.set(0, -0.5, 0);
            quat.set(0, 0, 0, 1);
            var ground = createParalellepiped(
              40,
              1,
              40,
              0,
              pos,
              quat,
              new MeshPhongMaterial({
                defaultColor: Cesium.Color.fromRgba(0xffffff).withAlpha(1), //"rgb(200,200,200)",
                side: MeshMaterial.Sides.DOUBLE,
                translucent: false,
              })
            );
            ground.quaternion = null;
            // Ball
            var ballMass = 1.2;
            var ballRadius = 0.6;

            var ball = new Mesh(
              new Cesium.SphereGeometry({
                radius: ballRadius,
                stackPartitions: 20,
                slicePartitions: 20,
              }),
              new MeshPhongMaterial({
                defaultColor: Cesium.Color.fromRgba(0x000000).withAlpha(1),
                side: MeshMaterial.Sides.DOUBLE,
                translucent: false,
              })
            );

            var ballShape = new Ammo.btSphereShape(ballRadius);
            ballShape.setMargin(margin);
            pos.set(-3, 2, 0);
            quat.set(0, 0, 0, 1);
            createRigidBody(ball, ballShape, ballMass, pos, quat);
            ball.physicsBody.setFriction(0.5);

            // 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.set(0, brickHeight * 0.5, z0);
            quat.set(0, 0, 0, 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 rope
            // Rope graphic object
            var ropeNumSegments = 10;
            var ropeLength = 4;
            var ropeMass = 3;
            var ropePos = ball.position.clone();
            ropePos.y += ballRadius;

            var segmentLength = ropeLength / ropeNumSegments;
            var ropeMaterial = new MeshMaterial({
              defaultColor: Cesium.Color.fromRgba(0x000000).withAlpha(1),
              side: MeshMaterial.Sides.DOUBLE,
              translucent: false,
              wireframe: true,
            });
            var ropePositions = [];
            var ropeIndices = [];

            for (let i = 0; i < ropeNumSegments + 1; i++) {
              ropePositions.push(ropePos.x, ropePos.y + i * segmentLength, ropePos.z);
            }

            for (let i = 0; i < ropeNumSegments; i++) {
              ropeIndices.push(i, i + 1);
            }

            var ropeGeometry = new Cesium.Geometry({
              attributes: {
                position: new Cesium.GeometryAttribute({
                  componentDatatype: Cesium.ComponentDatatype.DOUBLE,
                  componentsPerAttribute: 3,
                  values: new Float32Array(ropePositions),
                }),
              },
              indices: new Uint16Array(ropeIndices),
              primitiveType: Cesium.PrimitiveType.LINES,
              boundingSphere: Cesium.BoundingSphere.fromVertices(ropePositions),
            });

            rope = new Mesh(ropeGeometry, ropeMaterial);
            meshVisualizer.add(rope);

            // Rope physic object
            var softBodyHelpers = new Ammo.btSoftBodyHelpers();
            var ropeStart = new Ammo.btVector3(ropePos.x, ropePos.y, ropePos.z);
            var ropeEnd = new Ammo.btVector3(ropePos.x, ropePos.y + ropeLength, ropePos.z);
            var ropeSoftBody = softBodyHelpers.CreateRope(physicsWorld.getWorldInfo(), ropeStart, ropeEnd, ropeNumSegments - 1, 0);
            var sbConfig = ropeSoftBody.get_m_cfg();
            sbConfig.set_viterations(10);
            sbConfig.set_piterations(10);
            ropeSoftBody.setTotalMass(ropeMass, false);
            Ammo.castObject(ropeSoftBody, Ammo.btCollisionObject)
              .getCollisionShape()
              .setMargin(margin * 3);
            physicsWorld.addSoftBody(ropeSoftBody, 1, -1);
            rope.physicsBody = ropeSoftBody;
            // Disable deactivation
            ropeSoftBody.setActivationState(4);

            // The base
            var armMass = 2;
            var armLength = 3;
            var pylonHeight = ropePos.y + ropeLength;
            var baseMaterial = createMaterial();
            pos.set(ropePos.x, 0.1, ropePos.z - armLength);
            quat.set(0, 0, 0, 1);
            var base = createParalellepiped(1, 0.2, 1, 0, pos, quat, baseMaterial);
            base.quaternion = null;
            pos.set(ropePos.x, 0.5 * pylonHeight, ropePos.z - armLength);
            var pylon = createParalellepiped(0.4, pylonHeight, 0.4, 0, pos, quat, baseMaterial);
            pylon.quaternion = null;

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

            // Glue the rope extremes to the ball and the arm
            var influence = 1;
            ropeSoftBody.appendAnchor(0, ball.physicsBody, true, influence);
            ropeSoftBody.appendAnchor(ropeNumSegments, arm.physicsBody, true, 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 box = Cesium.BoxGeometry.fromDimensions({
              dimensions: new Cesium.Cartesian3(sx, sy, sz),
              vertexFormat: new Cesium.VertexFormat({
                position: true,
                normal: true,
              }),
            });
            var threeObject = new Mesh(box, material);
            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) {
            threeObject.position.copy(pos);
            threeObject.quaternion = new Cesium.Quaternion(quat);

            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);
          }

          function initInput() {
            window.addEventListener(
              "keydown",
              function (event) {
                switch (event.keyCode) {
                  // Q
                  case 81:
                    armMovement = 1;
                    break;

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

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

          function updatePhysics(deltaTime) {
            // Hinge control
            hinge.enableAngularMotor(true, 1.5 * armMovement, 50);

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

            // Update rope
            var softBody = rope.physicsBody;
            var ropePositions = rope.geometry.attributes.position.values;
            var numVerts = ropePositions.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();
              ropePositions[indexFloat++] = nodePos.x();
              ropePositions[indexFloat++] = nodePos.y();
              ropePositions[indexFloat++] = nodePos.z();
            }
            rope.geometry.attributes.position.needsUpdate = true;

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

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

            startTime = new Date();
          }
          setTimeout(function () {
            if (!init) {
              // - Init -

              initPhysics();

              createObjects();

              initInput();

              init = true;
            }
            if (!start) {
              startTime = new Date();
              meshVisualizer.beforeUpdate.addEventListener(update);
              start = true;
            } else {
              meshVisualizer.beforeUpdate.removeEventListener(update);
              start = false;
            }
          }, 1000 * 3);
        });
      }
    </script>
  </body>
</html>