javascript - Three.js - 在代码中包含网格数据

Question

我有这个 Three.js 代码，其中 JSON 加载器从文件/models/mountain.json 加载网格:

var Three = new function () {
    this.scene = new THREE.Scene()

    this.camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 1000)
    this.camera.position.set(20, 52, 20);
    this.camera.rotation.order = 'YXZ';
    this.camera.rotation.y = -Math.PI / 4;
    this.camera.rotation.x = Math.atan(-1 / Math.sqrt(2));
    this.camera.scale.addScalar(1);

    this.renderer = new THREE.WebGLRenderer()
    this.renderer.setSize(window.innerWidth, window.innerHeight);

    var ground = new THREE.Mesh(
        new THREE.PlaneBufferGeometry(436, 624),
        new THREE.MeshLambertMaterial({color: '#808080'}));
    ground.rotation.x = -Math.PI / 2; //-90 degrees around the x axis

    this.scene.add(ground);

    var light = new THREE.PointLight(0xFFFFDD);
    light.position.set(-1000, 1000, 1000);
    this.scene.add(light);

    var loader = new THREE.JSONLoader();
    this.loadMountain = function (x, y) {
        loader.load('/models/mountain.json', Three.getGeomHandler('#808080', x, y, 1))
    }
    this.loadFields = function () {
        for (var i=0;i<4000;i++) {
            Three.loadMountain(x, y)
        }
    }

    this.getGeomHandler = function (color, x, y, scale) {
        return function (geometry) {
            var mesh = new THREE.Mesh(geometry, new THREE.MeshLambertMaterial({color: color}));
            mesh.scale.set(scale, scale, scale);
            mesh.position.set(x, 0, y);
            Three.scene.add(mesh);
        };
    }

    this.init = function () {
        $('body').append(Three.renderer.domElement);
        Three.loadFields()
        Three.render();
    }
    this.render = function () {
        requestAnimationFrame(Three.render);
        Three.renderer.render(Three.scene, Three.camera);
    };
}

$(document).ready(function () {
    Three.init();
});

这是/models/mountain.json 内容:

{

    "metadata": {
        "formatVersion" : 3.1,
        "generatedBy"   : "Blender 2.7 Exporter",
        "vertices"      : 39,
        "faces"         : 62,
        "normals"       : 36,
        "colors"        : 0,
        "uvs"           : [],
        "materials"     : 1,
        "morphTargets"  : 0,
        "bones"         : 0
    },

        "scale" : 1.000000,

        "vertices" : [2.47941e-07,-1.13504e-07,-2.59668,-2.41031,-6.2081e-08,-1.42025,-2.2107,4.55942e-08,1.04307,2.16045,1.84802,0.183901,-0.427399,1.11956e-07,2.56126,1.23588,9.98242e-08,2.28371,2.50387,4.55942e-08,1.04307,2.58781,9.37308e-09,0.214431,2.17385,-0.0483214,-1.42025,1.40026,-0.0483214,-1.74566,1.50645e-07,2.13114,-1.9421,-0.6306,2.13114,-1.52968,-1.04238,2.48498,-1.06715,-1.23632,3,-0.856474,-1.5574,2.62306,-0.476759,-1.68478,2.74775,0.160378,-1.20001,3,0.780135,-1.14654,3,1.41015,-0.31966,3,1.91562,0.31966,2.48498,1.46763,0.92434,3,1.70803,0.754272,2.73835,0.751422,1.90443,2.61032,0.780134,1.52632,2.76301,0.160377,1.78144,2.69402,-0.47676,1.9564,3,-1.06223,0.807846,2.13114,-1.68984,1.32727,3.09213,-1.10549,1.13568,1.38919,-1.21096,1.98255,0.969716,-1.07503,0.529022,2.81989,0.43993,0.969891,3.32801,-1.43745,-0.39848,2.2361,-1.12285,-1.00579,1.31316,2.27174,-0.789081,1.31316,2.34614,0.888122,0.684588,2.17543,0.568656,2.07869,1.615,2.13863,1.49103,1.32889,2.52981,0.924307,0.978923],
        "faces"    : [34,0,11,10,0,0,1,2,34,1,13,12,0,3,4,5,34,0,12,11,0,0,5,1,34,0,1,12,0,0,3,5,34,38,3,37,0,6,7,8,34,9,31,28,0,9,10,11,34,0,10,26,0,0,2,12,34,9,26,31,0,9,12,10,34,9,0,26,0,9,0,12,35,18,17,33,34,0,13,14,15,16,35,37,3,23,22,0,8,7,17,18,34,29,27,25,0,19,20,21,34,28,31,27,0,11,10,20,34,29,28,27,0,19,11,20,34,12,19,20,0,5,22,23,34,5,6,20,0,24,25,23,34,6,38,37,0,25,6,8,34,37,22,21,0,8,18,26,34,30,27,31,0,26,20,10,34,6,37,20,0,25,8,23,34,30,31,32,0,26,10,27,34,37,21,20,0,8,26,23,34,30,32,26,0,26,27,12,34,21,30,20,0,26,26,23,34,11,12,20,0,1,5,23,34,26,10,11,0,12,2,1,34,30,11,20,0,26,1,23,34,30,26,11,0,26,12,1,34,20,35,5,0,23,28,24,34,20,19,36,0,23,22,28,34,20,36,35,0,23,28,28,35,6,7,3,38,0,25,29,7,6,34,7,23,3,0,29,17,7,34,29,25,24,0,19,21,30,34,7,24,23,0,29,30,17,34,7,8,29,0,29,31,19,34,7,29,24,0,29,19,30,34,18,36,19,0,13,28,22,34,4,5,35,0,32,24,28,34,18,35,36,0,13,28,28,34,18,34,4,0,13,16,32,34,18,4,35,0,13,32,28,35,13,14,15,16,0,4,33,33,34,34,30,25,27,0,26,21,20,34,23,24,25,0,17,30,21,34,21,22,23,0,26,18,17,34,30,21,25,0,26,26,21,34,21,23,25,0,26,17,21,35,8,9,28,29,0,31,9,11,19,34,26,32,31,0,12,27,10,34,2,16,15,0,35,34,33,34,14,13,1,0,33,4,3,34,14,2,15,0,33,35,33,34,14,1,2,0,33,3,35,34,2,17,16,0,35,14,34,34,4,34,33,0,32,16,15,34,2,33,17,0,35,15,14,34,2,4,33,0,35,32,15,34,16,12,13,0,34,5,4,34,18,19,12,0,13,22,5,34,16,17,18,0,34,14,13,34,16,18,12,0,34,13,5],
        "uvs"      : [],
        "normals"  : [0.094028,0.298624,-0.949705,-0.162755,0.939238,-0.302133,0.228248,0.832942,-0.504044,-0.822016,0.351848,-0.447707,-0.253456,0.911466,-0.323923,-0.004059,0.913785,-0.40614,0.788598,0.576983,0.21247,0.952086,0.29432,-0.082797,0.625996,0.719138,0.301553,0.474441,0.29017,-0.83105,0.255501,0.796655,-0.547746,0.441328,0.166265,-0.881802,0.221656,0.483047,-0.847041,0.192999,0.761406,0.618824,-0.352977,0.778008,0.5197,-0.653584,0.252663,0.713401,-0.29136,0.293313,0.91052,0.688314,0.722556,0.063967,0.612629,0.761834,0.210364,0.718711,0.280313,-0.63625,0.370495,0.893033,-0.255287,0.629627,0.578692,-0.518326,0.229896,0.680258,0.695944,-0.064241,0.589251,0.805353,0.205145,0.606586,0.768059,0.734519,0.631458,0.24839,0.211341,0.910367,0.355693,-0.135533,0.925748,-0.352916,-0.03061,0.231269,0.972381,0.975982,0.184362,-0.11594,0.694266,0.717338,0.058412,0.712027,0.350871,-0.608173,-0.201483,0.259865,0.944365,-0.820185,0.572069,-0.001556,-0.322733,0.944334,0.063509,-0.922117,0.223151,0.315958],

        "skinIndices"  : [],
        "skinWeights"  : [],
        "morphTargets" : [],

        "bones"      : [],
        "animations" : [],

        "colors"    : [],
        "materials" : [
            {
                "DbgColor": 15658734,
                "DbgIndex": 0,
                "DbgName": "default",
                "vertexColors": false
            }
        ]


}

是否可以在代码中使用此内容作为变量并将其添加到 scane 中？

Answer 1

如果您想通过解析 JSON 数据结构来加载模型，请遵循以下模式。

修改您的 mountain.json 文件并为您的数据结构命名。

var mountain = {

    "metadata": {
        "formatVersion" : 3.1,
        "generatedBy"   : "Blender 2.7 Exporter",

        ... etc ...

}

在源代码中包含以下代码:

<script src="mountain.js"></script>

现在您可以像这样加载模型:

var loader = new THREE.JSONLoader();

var model = loader.parse( mountain );

mesh = new THREE.Mesh( model.geometry, model.materials[ 0 ] );

scene.add( mesh );

三.js r.70