关于make2d,6.0以来已经优化了很多,速度提升了十倍,精度也好很多,网格也可以make2d,大部分结果不理想都是建模习惯的问题,之前官方自己就有过相关的解释,教你如何得到更好的效果,咱们就给大家搬运一下:
# How to Get Make2D to Perform Better
如何获得更好的make2d效果:
**Make2D** is one of Rhino's weaker spots, but it is still an essential function for many people. Following are some bits of advice distilled from various discussions among the *Pros* on the Rhino newsgroup.
make2d是rhino的弱点之一。但是对于用户仍然是很必要的一个功能。跟着下面的从各种rhino用户之间总结汇总的建议意见来操作会好很多。
* **Make2D** doesn't work with objects behind the camera – so make sure there are none selected for your scene. For views where the camera is inside the model, you may need to draw a plane that represents the camera location, split the model there, and delete/hide everything behind the camera.
* make2d并不会计算摄像机背后的物体,所以请确保隐藏摄像机后的物体来节约计算时间。至于那种摄像机在物体内部的视角,你可能需要画一个面来表示摄像机的位置,然后用面分割物体,把摄像机背后的物体隐藏,这样的话效果会好很多。(F6打开摄像机)
* **Hide** all objects that are already completely hidden behind others in the scene. One easy way to do this is to use **SelVisible** on your scene, then **Invert** the selection. Everything that selects can be hidden.
* 隐藏场景中完全被其他物件遮挡的,看不到的物体来减少计算时间。一个很简单的方法是使用selVisible命令来选取所有可见的物件,然后invert反选,就可以隐藏所有不可见的物件了,看不见你make2d它干嘛,不是浪费时间么,除非你要隐藏线。
* **Hide** (or simplify) objects with a lot of detail that will be tiny in the Make2D (for example screw threads). No need to calculate all those intersections and projections for something that will end up only being a few pixels in the final drawing.
* 隐藏或者简化有很多细节但是在成图中根本看不清楚的细节,比如螺纹。不惜要去计算这些最终只占成图几个像素的相交或者投影,浪费时间。
* **Join** all **surfaces** into polysurfaces as much as possible. Everywhere surface edges are concurrent, Rhino has to calculate two edges instead of one. See if there are overlaps.
* 尽可能组合所有的曲面成多重曲面,所有边缘重合的曲面,rhino都会计算两遍而如果是多重曲面,rhino就只会计算一遍。
* **Hide** all **curves** if possible. They take longer to calculate. This is especially true with curves that are concurrent with surface edges. These are redundant anyway, so hide or delete them.
* 如果可以的话,隐藏所有的曲线,曲线的计算费时更久,尤其是这些曲线和曲面边缘重叠的时候,反正是重叠了,所以隐藏或者删除了最好。
* Check for bad objects (**SelBadObjects**) and fix if necessary!
* 检查是否有坏面,使用selbadobjects命令, 这个也会影响make2d的结果。
* If possible, ensure that the geometry included in the Make2D stays inside (does not touch) the view border at all. (This might be impossible for interiors.)
* 如果可能的话,确保物体在make2d的时候在视窗内,而不是和视窗相交,准确说就是和摄像机相交,如果摄像机和物体相交的话,透视角度过大有时候就会出现make2d的问题,亲身经历,相同的角度,不同的透视角度出来的结果是不一样的,轴测效果最好。不过这一点对于室内设计····是不可能的。
* Lowering the **absolute unit tolerance** by an order of magnitude (for example from .001 to .01) helps tremendously. Just remember that your resulting Make2D drawing will not be any more accurate than that. Also don't forget to set it back to the original tolerance later. For a discussion of what tolerances do in Rhino see [Understanding Tolerances](https://wiki.mcneel.com/rhino/faqtolerances "rhino:faqtolerances").
* 可以尝试把绝对公差降低一个数量级,比如我习惯使用m单位,绝对公差0.0001,那我在make2d的时候可以把绝对公差改成0.001再make2d,这样速度会快很多,make2d的精度不会比这个再低了。只是切记,切记,切记,之后一定要把绝对公差调回去。至于为啥,可以看一下我这个帖子:[十一大高效的Rhino建模习惯](https://mp.weixin.qq.com/s/tIhymmQxetXTwHTCCoetcQ)。
And… **your system also makes a difference**.
并且,不同的操作系统,结果也可能有不同。
* A 64-bit system with as much RAM as you can manage and a multi-core processor will allow you to do a Make2D working in the background. In any case, for a large Make2D I would export the scene to a new file specific for the Make2D and do all the operations suggested on this page in the new file.
* 内存越大的六十四位并且是多核的系统将会允许你在后台运行make2d,任何时候要进行一个大场景的make2d的时候,我都会单独导出一个文件用来make2d,然后检查一下上面所说的所有问题。
Compiled by Mitch 8.02.09
完成于8.02.09 by Mitch
再举个例子吧,研习班的一位同学有个模型,等距断面线做了纹理,想要make2d,但是出来的结果非常不理想。


那我们可以看到线断断续续,很不好,一来呢,是他使用的rhino版本比较低,我使用最新版本的rhino6.0sr20之后,然后发现,效果好了不少,但是仍然不理想:

这个主要就是因为曲面比较复杂,线和曲面重复在一起,rhino无法判断线在内部还是面外部,出现了误差,所以才make2d出了错误,这样的情况也是我们要尽量避免的,也就是避免线和面重叠,所以咋办?那这时候要是没有必须使用矢量图的要求,那就直接视窗截图,如果一定要矢量线稿,那就只能动用最后手段,用线或者面去分割对象,把面分隔开,有了曲面边缘之后再去make2d:

那你可以看到就一点问题都没有了,缺点就是比较卡,所以建议复制一份文件单独来做这个make2d。
ps:补充,另外还请注意,模型别离原点太原,这也会导出make2d的结果有问题。
- 前言
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- Kangaroo 2.0
- 日常百问
- Rhino百问
- 请问如何可以调整材质贴图大小?如何给材质?
- Rhino可以给多重曲面中某一个面单独赋予一个材质么?
- Rhino显示有破面怎么办?
- Rhino可以像Su一样有很真实的阴影么?
- Rhino可以像Su一样一键放置小人来放置视角么?
- 为什么我rhino和su一样的模型,rhino会比su卡?
- 如何让极地模式等显示模式像钢笔模式一样显示外轮廓?
- Rhino建方盒子建筑快么?优秀的建模习惯是什么?
- Tspline建的模型内部结构是什么样子的?
- 曲面UV可以旋转么?
- Rhino导出cad的自由曲线没办法单线变墙怎么办?
- 请问WeaveBird如何安装?6.0可以装Wb么?
- Rhino显示中如何显示线宽?
- Rhino当中的填充图案太少怎么办?可以导入cad的么?
- Rhino里如何把图片转化成矢量线条?
- Rhino想导出DEA格式进Lumion的时候报错,好大一个错误提示框为何?
- Rhino注解点可以导入CAD么?
- Rhino导出或者导入CAD文件?有什么注意事项?
- Rhino6.0可以使用weavebird么?
- rhino如何批量展开多重曲面?
- 如何在当前显示模式下让某个物体以其他显示模式里显示?
- Rhino可以像su一样照片匹配建模么?
- 如何选中一个物件整体着色显示,而不是只有线框显示?
- Mesh网格的线乱七八糟的,如何可以正常显示?只有边线没有内部乱七八糟的线?
- Rhino当中如何在交点处打断线?
- 如何在着色模式里显示物件材质?
- Rhino如何选中物体的时候全部着色显示而不是只显示边线看起来比较乱?
- 为什么rhino导出的cad文件在打印时无法修改为黑色?
- 犀牛如何全屏显示?
- Rhino布尔为什么会失败?
- rhino和GH里调整曲线接缝点的命令是干嘛的,有什么作用?
- Rhino模型又大又卡怎么办?
- Rhino当中的模板,单位,公差如何选择?
- 请问我的截屏面和x y轴都不平行,还是个斜方向的,请问如何导出这个截屏面的剖面呢?
- Rhino可以和su的场景一样同时保存图层和视图变化么?
- Rhino6.0的帮助文档好卡呀,有5.0那样的离线文档么?
- make2d有断线?make2d时间太长?make2d质量不高怎么办?
- Rhino输入命令没有提示了是为什么?就是输入命令不自动补全?
- Rhino可以像cad那样修改物件显示顺序?比如我想让一根线显示在另一根线上?
- 请问大家在rhino里是怎么放家具的呢?比如su导入rhino有很多三角面,而且很卡?怎么做比较好?
- rhino如何设置2d树木或者2d人面向摄像机或跟随镜头一起旋转?
- Rhino无法删除图层怎么办?
- Rhino如何把建筑落到地形上?
- Rhino模型中剖面不是横平竖直的,是带角度的,如何让视窗正对剖面?
- 在rhino里面直接画线,怎么调出来像CAD那样的十字光标?
- Rhino如何像Su一样设置组件为唯一?
- Rhino如何出斜轴测图?和一点北京一样的那种?
- 可以把渲染圆管,圆角,厚度抽离成物体而不仅仅是显示效果么?
- 犀流堂的模型都好大呀,动不动几十兆几百兆,这咋用呀?文件太大太卡怎么办?
- 请问可以分享一下老师得配置文件么?
- Make2D的线稿导入CAD怎么什么都看不到??有的线还变成一段一段的直线了?
- rhino如何对图层快速打开关闭进行一键操作?
- 犀牛这么好用为什么要用su?
- rhino为什么只能在xy平面画?
- Rhino如何导入Revit?
- 学建筑还有前途么?末日黄花?没有钱途?
- Revit如何导入Rhino?
- Rhino建模时如何管理图层?如何分图层比较高效?
- Rhino吃什么配置?
- Tspline或者Rhino7.0的subd最终得到的造型是多重曲面,没法曲面流动?怎么做表皮呢?
- GH百问
- GH如何安装插件?
- 如何修改数值的小数点后位数?
- 如何在一个列表中获得指定数据的所有序号?
- 为什么我跟着教程做的网格地形无法bake?
- GH当中的科学计数法如何调整正常显示?
- 如何像犀流堂一样把logo导入GH当中?
- GH中如何删除重面?
- GH中封闭路径无法单轨扫略?
- 如何根据是否与曲线相交来对图形分组?
- GH如何偏移多重曲面成体?以及两侧偏移?
- GH中如何根据图片生成曲线,即矢量线条?
- 想做穿孔铝板表皮,贴图太假,想做实体模型太卡,怎么办?
- 如何下载网上的地图数据?如何生成城市建筑模型?
- 如何提取钢结构中心线?
- GH如何做动画?有教程么?
- 我觉得我GH学的差不多了,想接触代码,请问学什么代码好?怎么学?
- gh做动画如何切视角?
- GH中如何批量展开多重曲面?
- GH如何像rhino一样缩回曲面?
- 请问如何像网站课程里一样显示运算器名称?
- gh中把物体bake到rhino中,在rhino中处理一下,然后又拾取回来的电池,是哪个哟?
- GH中如何获得拾取的物件的图层名称?
- GH如何抽取奇数列和偶数列?
- GH如何在交点处打断线?
- GH当中可以批量进行Squish么,就是双曲面展开?
- 请问gh中如何把曲线投影到网格上?
- GH当中如何实现Rhino当中两个曲面之间建立均分曲面的命令?
- GH中单轨扫掠失败,但是Rhino当中手工做却可以成功,怎么办?
- grasshopper怎么阻止载入某些插件?
- GH种如何bake线条颜色以及物件材质?
- GH如何删除重复曲线?
- 如何在gh当中获取当前日期时间
- 如何给电池设置过期时间,超过时间,电池自动作废?
- 请问我gh里计算面积的时候显示2.9232e+9,这是什么意思呢?可以改成正常显示么?
- 请问有没有offset crv on mesh这个功能呢?类似于offset crv on srf?
- 给定截面如何批量扫掠生成线脚或者说是装饰线或者说是结构?
- 为什么GH里两个数一摸一样但是却判断不相等?
- 如何设置运算器显示样式,加透明度加白边?像犀流堂视频里一样?
- GH种如何偏移网格成体?
- 如何学习一个新的GH插件?比如Human?Lunchbox?
- Rhino不是Nurbs软件么,那GH中的Mesh运算器是不是对建筑没用呀?可以不学么?
- ABC三个字母,有多少种排列组合方式?GH咋做?
- 如何统一全部曲面方向?
- GH如何创建文字线稿?3D文字?
- 请问如何把GH背景变成白色?并隐藏格线?
- GH中双击界面搜索输入后没有结果是为什么?
- 如何在GH中控制修改线的线型?
- GH有汉化么?
- 在gh中如何根据数字位数在数字前加零,比如5变成005?
- GH的C#运算器可否直接调用GH中的电池?
- Grasshopper中如何像Meshoutline命令一样获取当前视角的外轮廓边缘呢?
- Grasshopper 插件安装失败怎么办?