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Google SketchUp:三维建模软件"

前些日子Google收购了SketchUp,现在已经推出了Google SketchUp,分为Free和Pro二个版本提供下载,其中Pro版可以试用8个小时。其实SketchUp这家3D建模公司主要是针对建筑模型的三维实体创建,而并非一般常用的三维制图软件。

下载Free版安装完后才不到50M,真精简。像盖房子一样,实体模型要在"地基"的上面建立。画出二维的图形后,利用拖放成型的工具便可以自由地生成实体了。对实体模型的表面可以加装材质或者上色。支持从网上的模型库Google's 3D Warehouse中下载模型或者提交自己制做的模型。可以导入图片,或者从 Google Earth中提取指定地点的图片,然后在图片的基础上创建模型,这样便像真正的房子放在了地图表面上,然后在Google Earth中便呈现出自己的模型了。

和普通三维制图软件最大的区别是:在一个实体模型文件中可以创建多个独立模型,而像solidworkpro/E等等要在创建多个模型文件(零件)后,一个一个组成装配体,这样完成的装配体才是真正完整的模型。这点很重要,因为你画一个小房子,可能很容易,但如果画个故宫,始终在一个文件中创建的话,你可以想像这个文件有多大,每次打开模型时有多慢,每转一个面有多迟钝,当有局部需要再次修改时有多麻烦,当这个文件有损坏时,你会有多痛心。。。。。。

其它的区别就太多了,生成实体只是拖放,没有旋转,扫描,陈列,抽壳等等,曲面功能几乎完全没有,我自己画的那个iPod模型的4个倒圆便累了半天。不能做剖视以及生成二维制图等等。

但想必非专业人士很少有人会使用三维建模软件,而大多数的人都会使用一些二维基础上的图片处理软件,所以Google这次推广SketchUp,让更多的人来尝试三维实体的建立,绝对有更深远的意义。因为将来的网络不但会在声音,图像,视频等等领域来增强其真实感,而更重要的将是把三维实体模型放在网络上,让人真正的身临其境

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