# Refit 曲面

**URL:** <https://cn.discourse.mcneel.com/t/refit/1070>\
**Category:** Rhino for Windows\
**Created:** [2017年一月29日 02:10 UTC](https://cn.discourse.mcneel.com/t/refit/1070 "2017-01-29T02:10:06Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![anon667555](https://sea3.discourse-cdn.com/mcneel/user_avatar/cn.discourse.mcneel.com/anon667555/32/3067_2.png) [@anon667555](https://cn.discourse.mcneel.com/u/anon667555)\
**Post date:** [2017年一月29日 02:10 UTC](https://cn.discourse.mcneel.com/t/refit/1070/1 "2017-01-29T02:10:06Z")

</div>

这样情况有没有指令可以重新做曲线？ （因为太多）

目前只能用circle里的子命令做。

这个例子是想做出圆，用最少的CP.

[Refit crv.3dm](https://cn.discourse.mcneel.com/uploads/mcneel_cn/original/2X/6/65f86869e288904f74c35390a927da4919793f2e.3dm) (167.6 KB)

 ![](https://discourse-cdn-aws1.com/mcneel/uploads/mcneel_cn/original/2X/e/e557918ac57f5c756a7feeec8b241181c221ff29.jpg)

* * *

😂 这是怎么回事？？

 ![](https://discourse-cdn-aws1.com/mcneel/uploads/mcneel_cn/original/2X/9/902086695fc8323abc8cd83b6aee5378191542f7.jpg)

---

<div class="post-metadata">

**Author:** ![KelvinC](https://sea3.discourse-cdn.com/mcneel/user_avatar/cn.discourse.mcneel.com/kelvinc/32/3391_2.png) [@KelvinC](https://cn.discourse.mcneel.com/u/KelvinC)\
**Post date:** [2017年一月29日 15:13 UTC](https://cn.discourse.mcneel.com/t/refit/1070/2 "2017-01-29T15:13:07Z")

</div>

> [@anon667555](#):
>
> 目前只能用circle里的子命令做。

這個模型的公差設定有問題，請改為例如 0.01。

![](https://global.discourse-cdn.com/mcneel/uploads/mcneel_cn/original/2X/e/e9fb2b7526fab71d2804b86a88b607ada29311d0.png)

用 FitCrv 指令簡化曲線，這樣設定：

![](https://global.discourse-cdn.com/mcneel/uploads/mcneel_cn/original/2X/c/c960455d2c0406c1d1fd958b537d8b1bb477d5c2.png)

![](https://global.discourse-cdn.com/mcneel/uploads/mcneel_cn/original/2X/e/e0e674567a3b9891c721f53ae2fa397f5925da41.jpg)

用 Convert 指令進一步簡化成圓弧與直線組成的曲線，這樣設定：

 ![](https://global.discourse-cdn.com/mcneel/uploads/mcneel_cn/original/2X/3/316cb23c4911ca4bbdce99cc24b2cad3cd5c5c58.png)

![](https://global.discourse-cdn.com/mcneel/uploads/mcneel_cn/original/2X/8/879dbe8fc05eb018591d411a96f86a8d81ecf50c.jpg)

這裡有一小段直線，是因為原來的曲線 Seam 在這裡的關係，我還要研究一下。

> [@anon667555](#):
>
> 这是怎么回事？？

可能是論壇的新功能吧? 我試不出來。

---

<div class="post-metadata">

**Author:** ![KelvinC](https://sea3.discourse-cdn.com/mcneel/user_avatar/cn.discourse.mcneel.com/kelvinc/32/3391_2.png) [@KelvinC](https://cn.discourse.mcneel.com/u/KelvinC)\
**Post date:** [2017年一月30日 03:16 UTC](https://cn.discourse.mcneel.com/t/refit/1070/3 "2017-01-30T03:16:51Z")

</div>

> [@KelvinC](#):
>
> 這裡有一小段直線，是因為原來的曲線 Seam 在這裡的關係，我還要研究一下。

我加了一個關於這個問題的 bug report

> **[FitCrv across seam : RH-37727](https://mcneel.myjetbrains.com/youtrack/issue/RH-37727)**
>
> Attached an example model that the FitCrv command leaves a kink at the seam and a linear segment beside. Moving the seam to one of the expected corner after FitCrv solves the problem. I found the problem (or a limitation?) in a support case at...