obj模型导入规则以及贴图不显示原因
<p><span style="color: inherit; font-family: inherit; font-size: 2rem;"></span></p><h2 style="font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; color: rgb(33, 37, 41);"><span style="font-weight: bolder;"><span style="font-family: 宋体; font-size: 21px;">O</span></span><span style="font-weight: bolder;"><span style="font-family: "Calibri Light"; font-size: 21px;">bj</span></span><span style="font-weight: bolder;"><span style="font-family: 宋体;">模型导入规则</span></span><span style="font-weight: bolder;"></span></h2><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Calibri; font-size: 14px;">Obj</span><span style="font-family: 宋体;">模型文件需打包导入，文件包中含有模型、材质、贴图、缩略图文件。</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-weight: bolder;"><span style="font-family: Calibri;">文件</span></span><span style="font-weight: bolder;"><span style="font-family: 宋体;">包</span></span><span style="font-weight: bolder;"><span style="font-family: Calibri;">格式</span></span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: 宋体; font-size: 14px;">.zip</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-weight: bolder;"><span style="font-family: 宋体;">文件包组成</span></span><span style="font-family: 宋体;">（</span><span style="font-family: Calibri;">注</span><span style="font-family: 宋体;">：</span><span style="font-family: Calibri;">模型</span><span style="font-family: 宋体;">、贴图、材质、缩略图，需在同级目录）</span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体; font-size: 14px;">模型文件：.obj格式</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体; font-size: 14px;">贴图文件：.png、<span style="font-family: Calibri;">.jpg</span>、<span style="font-family: Calibri;">.dds</span>、<span style="font-family: Calibri;">.tga</span>格式</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体; font-size: 14px;">材质文件：.mtl格式</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体; font-size: 14px;">缩略图文件：.png格式（文件名须与<span style="font-family: Calibri;">obj</span>文件一致）</span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-weight: bolder;"><span style="font-family: 宋体;">模型要求</span></span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体;">模型的每个节点的</span><span style="font-family: Calibri;">顶点数量不能超过</span><span style="font-family: 宋体; font-size: 14px;">65000，否则会报错</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体;">模型文件、贴图文件、材质文件、缩略图文件必须以英文名命名</span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-weight: bolder;"><span style="font-family: 宋体;">其他建议</span></span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; margin-left: 28px; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-family: Wingdings; font-size: 14px;">l </span><span style="font-family: 宋体; font-size: 14px;">使用3</span><span style="font-family: Calibri; font-size: 14px;">ds Max</span><span style="font-family: 宋体; font-size: 14px;">制作o</span><span style="font-family: Calibri; font-size: 14px;">bj</span><span style="font-family: 宋体; font-size: 14px;">模型，在导入C</span><span style="font-family: Calibri; font-size: 14px;">ampusBuilder</span><span style="font-family: 宋体; font-size: 14px;">（模模搭）前建议预先缩小模型尺寸为原尺寸的1</span><span style="font-family: Calibri; font-size: 14px;">/</span><span style="font-family: 宋体; font-size: 14px;">1</span><span style="font-family: Calibri; font-size: 14px;">00</span><span style="font-family: 宋体; font-size: 14px;">，以便在 “基于</span><span style="font-family: Calibri; color: rgb(0, 0, 0); font-size: 14px;">unity3d</span><span style="font-family: 宋体; color: rgb(0, 0, 0);">引擎的</span><span style="font-family: 宋体; font-size: 14px;">C</span><span style="font-family: Calibri; font-size: 14px;">ampusBuilder</span><span style="font-family: 宋体; font-size: 14px;">”中能按原尺寸显示该模型。关于<span style="font-family: Calibri;">3</span></span><span style="font-family: Calibri; font-size: 14px;">ds Max</span><span style="font-family: 宋体;">、</span><span style="font-family: Calibri; color: rgb(0, 0, 0); font-size: 14px;">unity3d</span><span style="font-family: 宋体;">两种平台间的尺寸体系差异，若有更多疑问，可自行百度搜索了解</span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><span style="font-weight: bolder;"><span style="font-family: 宋体;">示例图</span></span><span style="font-weight: bolder;"></span></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><img src="http://forum.thingjs.com/upload/attach/201811/14212_M43HMSADYSEWC6E.png" width="693" height="255"/></p><p style="margin-top: 0.2rem; margin-bottom: 0.2rem; color: rgb(33, 37, 41); font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; font-size: 15.4px;"><img src="http://forum.thingjs.com/upload/attach/201811/14212_3C5SE7UKJV4XQJT.png" width="514" height="128"/></p><p><span style="color: inherit; font-family: inherit; font-size: 2rem;"></span></p><h2 style="font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", 微软雅黑, 华文细黑, STHeiti, sans-serif; color: rgb(33, 37, 41);"><span style="font-weight: bolder;"><span style="font-family: 宋体; font-size: 21px;">O</span></span><span style="font-weight: bolder;"><span style="font-family: "Calibri Light"; font-size: 21px;">bj</span></span><span style="font-weight: bolder;"><span style="font-family: 宋体;">模型贴图显示规则</span></span></h2><p><span style="color: rgb(33, 37, 41); font-size: 15.4px; font-family: 宋体;">上传的obj模型为什么不显示贴图？这是因为3dmax导出obj(含贴图)，是不支持插件渲染器下的材质，只支持3dmax本身自带的默认扫描线渲染器下的材质。文件需打包导入，文件包中含有模型、材质、贴图、缩略图文件。</span></p><p><br/></p><p><span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">1、打开3dmax导入模型，按F10打开渲染设置，把渲染器改成默认扫描线渲染器，不要使用常用插件渲染器(如mental ray，v-ray)。</span></p><p><br/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537707247.jpg"/></p><p><br/></p><p><span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;"></span><span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">2、然后按M键，打开材质球编辑器，材质球的材质必须使用3dmax自带材质下的标准材质(如果默认渲染不是插件渲染器，材质中也不会含有插件材质的选择项)</span></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537722562.jpg" border="0" vspace="0"/></p><p><br/></p><p><span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">3、</span><span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">同样，材质下的贴图选择项，也须要选择贴图下的标准贴图，不能使用v-ray或其他插件贴图，打开材质球编辑器，材质球的材质必须使用3dmax自带材质下的标准材质(如果默认渲染不是插件渲染器，材质中也不会含有插件材质的选择项)</span></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537743603.jpg" border="0" vspace="0"/></p><p><br/></p><p> <span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">4、这时候在默认扫描线渲染器和标准材质下的3D模型导出obj，保存时会弹出obj导出选择项，点击右边的材质导出，勾选使用材质路径，选择obj同目录文件夹内(ps：three.js加载obj时，要把导出的贴图放在obj文件夹外)，这时候打开导出的文件夹就发现有导出的贴图了。</span></p><p><br/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537793586.jpg" border="0" vspace="0"/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537813384.jpg" border="0" vspace="0"/><br/></p><p> 5<span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">、这时候用代码编辑器或记事本打开mtl文件，就会发现有贴图信息了。</span></p><p><br/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537854320.jpg" border="0" vspace="0"/></p><p><br/></p><p> 6<span style="color: rgb(33, 37, 41); font-family: 宋体; font-size: 15.4px;">、如果渲染器选择插件渲染器(mental ray，v-ray)材质，导出的obj格式文件都找不到贴图，mtl文件也不含有贴图信息</span></p><p><br/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537881208.png"/></p><p><br/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537912838.jpg"/></p><p><br/></p><p><img src="https://img2.99ku.vip/manage/book/2017/04/07/14915537921843.jpg" border="0" vspace="0"/></p><p><br/></p> 现在导入obj文件不需要打包了，可以在编辑器里直接导入按经验总结来说，贴图不显示可以这么看：
1.看obj文件有乱码没？
2.看材质文件有乱码没？
3.看材质文件对应贴图在文件里有没？ fbx格式的模型同样要具备相关规范
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