Javascript 如何在three.js中设置拉伸高度？

我正在使用下面的代码来创建梯形。我需要将此几何体拉伸到特定高度（2800），但似乎无法确定在何处设置高度参数。有什么想法吗

//Walls

var wallPoints = [[0,0,0],
                  [0,1000,0],
                  [-100,1100,0],
                  [-100,-100,0],
                  [0,0,0]];

var Vector3WallPoints = [];

for (var i=0;i<wallPoints.length;i++)
{ 
Vector3WallPoints.push(new THREE.Vector3(wallPoints[i][0],wallPoints[i][1],wallPoints[i][2]));
}

var wallShape = new THREE.Shape( Vector3WallPoints );

var extrusionSettings = {
    amount: 1000,
    //size: 300, height: 400, curveSegments: 3,
    //bevelThickness: 10, bevelSize: 20, bevelEnabled: false,
    material: 0, extrudeMaterial: 1, amount: 100,
    };

    var wallGeometry = new THREE.ExtrudeGeometry( wallShape, extrusionSettings );                           

    var materialFront = new THREE.MeshBasicMaterial( { color: 0xffffff } );
    var materialSide = new THREE.MeshBasicMaterial( { color: 0xff8800 } );
    var materialArray = [ materialFront, materialSide ];
    var wallMaterial = new THREE.MeshFaceMaterial(materialArray);

    var walls = new THREE.Mesh( wallGeometry, wallMaterial );

    scene.add(walls);

//墙
var wallPoints=[[0,0,0]，
[0,1000,0],
[-100,1100,0],
[-100,-100,0],
[0,0,0]];
var Vector3WallPoints=[]；
对于（var i=0；i您在同一个对象中设置了两次
amount
。如果您设置了第一个变量，则另一个变量将覆盖它。删除其中一个变量，它将按照您的预期进行操作

var extrusionSettings = {
    amount: 1000,
    material: 0, extrudeMaterial: 1, amount: 100, // <-- whoops
};

var拉伸设置={
金额：1000，
材质：0，挤出材质：1，数量：100//