3 .js网格动画和纹理映射

Three.js Mesh animation and texture mapping

本文关键字：纹理映射动画网格 js 更新时间：2023-09-26

我做了一些研究，学习如何将obj文件导出为.js文件，可以通过Three.js的JSON模型导入。但是你怎样才能使这样的模型动画化呢?我有一个鸟模型在。js格式，我需要学会拍打它的翅膀。此外，当我从互联网上下载的obj文件，因为它是免费的模型，它也包含纹理图像的对象，但当我在3d建模软件Blender 3d中导入obj，它不能加载纹理，但它有位置在obj文件内，当我从文本编辑器打开它。当我将其转换为。js格式时，它也有正确的位置定位到bmp图像的纹理映射，但当我在webgl中加载模型时，使用JSON模型无法加载。

有没有人能告诉我正确的方向，从哪里我可以学到所有这些想法，这将是伟大的，如果你知道并帮助我马上回答。拜托，我需要你们的帮助。

Js模型文件代码

{
    "metadata" :
    {
        "formatVersion" : 3,
        "generatedBy" : "Blender 2.66 Exporter",
        "vertices" : 2652,
        "faces" : 4798,
        "normals" : 2652,
        "colors" : 0,
        "uvs" : [1202],
        "materials" : 4,
        "morphTargets" : 0,
        "bones" : 0
    },
    "scale" : 1.000000,
    "materials" : [ {
        "DbgColor" : 15658734,
        "DbgIndex" : 0,
        "DbgName" : "_5___Default0",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-201.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 15597568,
        "DbgIndex" : 1,
        "DbgName" : "_5___Default1",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-200.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 60928,
        "DbgIndex" : 2,
        "DbgName" : "_5___Default2",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-202.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 238,
        "DbgIndex" : 3,
        "DbgName" : "_5___Default",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-203.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 15658496,
        "DbgIndex" : 4,
        "DbgName" : "_5___Default0",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-201.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 61166,
        "DbgIndex" : 5,
        "DbgName" : "_5___Default1",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-200.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 15597806,
        "DbgIndex" : 6,
        "DbgName" : "_5___Default2",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-202.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    },
    {
        "DbgColor" : 419610,
        "DbgIndex" : 7,
        "DbgName" : "_5___Default",
        "blending" : "NormalBlending",
        "colorAmbient" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorDiffuse" : [0.800000011920929, 0.800000011920929, 0.800000011920929],
        "colorSpecular" : [0.8999999761581421, 0.8999999761581421, 0.8999999761581421],
        "depthTest" : true,
        "depthWrite" : true,
        "mapDiffuse" : "n-203.bmp",
        "mapDiffuseWrap" : ["repeat", "repeat"],
        "shading" : "Lambert",
        "specularCoef" : 2,
        "transparency" : 1.0,
        "transparent" : false,
        "vertexColors" : false
    }],

看这里

http://threejs.org/examples/webgl_morphnormals.htmlhttp://threejs.org/examples/webgl_morphtargets_horse.html

在第一个例子中看这里，第90行

var loader = new THREE.JSONLoader();
                loader.load( "models/animated/flamingo.js", function( geometry ) {
                    morphColorsToFaceColors( geometry );
                    geometry.computeMorphNormals();
                    var material = new THREE.MeshLambertMaterial( { color: 0xffffff, morphTargets: true, morphNormals: true, vertexColors: THREE.FaceColors, shading: THREE.FlatShading } );
                    var meshAnim = new THREE.MorphAnimMesh( geometry, material );
                    meshAnim.duration = 5000;
                    meshAnim.scale.set( 1.5, 1.5, 1.5 );
                    meshAnim.position.y = 150;
                    scene1.add( meshAnim );
                    morphs.push( meshAnim );
                } );