[G+smo]openNurbs相关的CAD文件格式转换

OpenNurbs是一个开源的读、写3dm文件的开发工具包。这里介绍使用gismo中的opennurbs进行3dm和xml文件格式间的转换。

#!bin/sh

echo "output plate with hole"

step 1. 读入3dm文件转化为xml

/home/yangsuse/code/gismo-build/bin/gsReadWrite_test /home/yangsuse/code/patch_test_square.3dm

step 2. 将xml转化为3dm文件前，需要使用makeMultiPatch程序添加边界信息

/home/yangsuse/code/gismo-build/bin/gsMakeMultiPatch /home/yangsuse/code/dump_write.xml

step3. 将xml文件转化为3dm文件；

/home/yangsuse/code/gismo-build/bin/gsReadWrite_test /home/yangsuse/code/makeMultipatch_output.xml

注意：

在CMAKE生成项目时，打开GISMO_WITH_ONURBS选项；

1. gsView 项目

Hi, give me a file (.txt, .axl) and I will try to draw it!

Usage:

--controlNet

Plot the control net (when applicable)

--element

Plot the element mesh (when applicable)

-s <int>, --samples <int>

Number of samples to use for viewing

--basis

Try to find and plot a basis contained in the file

--mesh

Try to find and plot a mesh contained in the file

--geometry

Try to find and plot a geometry contained in the file

--, --ignore_rest

Ignores the rest of the labeled arguments following this flag.

--version

Displays version information and exits.

-h, --help

Displays usage information and exits.

<string>

File containing data to draw (.xml, .axl, .txt)

gsView可以由xml文件，画出控制网，单元，基函数，网格等数据；

2. gsReadWrite_test 项目

读入一个3dm文件,转化为dump_write.xml文件。

读入一个xml文件，

3. 多片几何的排序和边界的排序