blocks|key|336978|text|也许你可以看看SymPy。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|336979|entityMap|0|LINK|mutability|MUTABLE|url|http://sympy.org/en/index.html^0|7|5|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Perhaps take a look at <a href="http://sympy.org/en/index.html" rel="noreferrer">SymPy</a>.

blocks|key|3103772|text|Shapely是流行的GEOS库的一个很好的python包装器。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3103773|entityMap|0|LINK|mutability|MUTABLE|url|https://pypi.python.org/pypi/Shapely|1|http://trac.osgeo.org/geos/^0|0|7|0|B|4|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

<a href="https://pypi.python.org/pypi/Shapely" rel="noreferrer">Shapely</a> is a nice python wrapper around the popular <a href="http://trac.osgeo.org/geos/" rel="noreferrer">GEOS</a> library.

blocks|key|3316740|text|我发现pyeuclid是一个很好的、简单的、通用的欧几里德数学包。尽管这个库可能并不完全包含您所提到的问题，但它的基础设施已经足够好，可以让您轻松地自己编写这些问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3316741|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/pyeuclid/^0|3|8|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I found <a href="http://code.google.com/p/pyeuclid/" rel="noreferrer">pyeuclid</a> to be a great simple general purpose euclidean math package. Though the library may not contain exactly the problems that you mentioned, its infrastructure is good enough to make it easy to write these on your own.

blocks|key|3103820|text|CGAL也有Python+bindings。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3103821|entityMap|0|LINK|mutability|MUTABLE|url|http://www.cgal.org/|1|http://cgal-python.gforge.inria.fr/^0|0|4|0|6|F|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

<a href="http://www.cgal.org" rel="noreferrer">CGAL</a> has <a href="http://cgal-python.gforge.inria.fr/" rel="noreferrer">Python bindings</a> too.

blocks|key|340493|text|我真的想要这个问题的一个好答案，上面的问题让我不满意。然而，我只是偶然发现了pythonocc，它看起来很棒，除了缺乏好的文档和安装方面的一些问题(还不能与pypi兼容)。最近一次更新是在4天前(2011年6月19日)。它包装了OpenCascade，它具有大量的几何和建模功能。来自pythonocc网站：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|340494|340495|+pythonOCC是一种面向Python语言的3DCAD/CAE/PLM开发框架。它提供高级拓扑和几何操作、数据交换(STEP、IGES、STL导入/导出)、2D和3D网格化、刚体模拟、参数化建模等功能。|blockquote|340496|340497|340498|编辑:我现在已经下载了pythonocc，并开始学习其中的一些示例|340499|我相信它可以执行上面提到的所有任务，但我发现它使用起来并不直观。它几乎完全是由SWIG包装器创建的，因此，很难对命令进行自省。|340500|entityMap|0|LINK|mutability|MUTABLE|url|http://www.pythonocc.org/|1|http://www.opencascade.org/^0|12|9|0|36|B|1|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]|$A|11|B|12|1|13]]|C|$]]|$1|D|3|-4|5|6|7|14|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|15|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|16|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|17|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|18|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|19|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|U]]|V|$5|Q|R|S|C|$T|W]]]]

I really want a good answer to this question, and the ones above left me dissatisfied. However, I just came across <a href="http://www.pythonocc.org/" rel="noreferrer">pythonocc</a> which looks great, apart from lacking good docs and still having some trouble with installation (not yet pypi compatible). The last update was 4 days ago (June 19th, 2011). It wraps <a href="http://www.opencascade.org/" rel="noreferrer">OpenCascade</a> which has a ton of geometry and modeling functionality. From the pythonocc website:

<blockquote>
 pythonOCC is a 3D CAD/CAE/PLM development framework for the Python programming language. It provides features such as advanced topological and geometrical operations, data exchange (STEP, IGES, STL import/export), 2D and 3D meshing, rigid body simulation, parametric modeling.
</blockquote>

[EDIT: I've now downloaded pythonocc and began working through some of the examples]

I believe it can perform all of the tasks mentioned, but I found it to be unintuitive to use. It is created almost entirely from SWIG wrappers, and as a result, introspection of the commands becomes difficult.

blocks|key|336986|text|geometry-simple有点线面移动类，大约300条线，只使用numpy；看一下。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|336987|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/geometry-simple^0|0|F|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://code.google.com/p/geometry-simple" rel="noreferrer">geometry-simple</a> has classes Point Line Plane Movement in ~ 300 lines, using only numpy; take a look.

blocks|key|3316795|text|您可能对OpenOpt项目http://openopt.org中的Python模块SpaceFuncs感兴趣|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3316796|SpaceFuncs是用于2D、3D、N维几何建模的工具，具有参数化计算、数值优化和几何方程求解系统的可能性|3316797|entityMap|0|LINK|mutability|MUTABLE|url|http://openopt.org/^0|D|I|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

You may be interested in Python module SpaceFuncs from OpenOpt project, <a href="http://openopt.org" rel="nofollow">http://openopt.org</a>

SpaceFuncs is tool for 2D, 3D, N-dimensional geometric modeling with possibilities of parametrized calculations, numerical optimization and solving systems of geometrical equations

blocks|key|3103920|text|Python+Wild+Magic是另一个SWIG包装的代码。然而，它是一个游戏库，但是您可以操作SWIG库文件，以便从Python+API中排除任何不需要的图形内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3103921|entityMap|0|LINK|mutability|MUTABLE|url|http://vmlaker.github.io/pythonwildmagic/index.html^0|0|H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://vmlaker.github.io/pythonwildmagic/index.html" rel="nofollow">Python Wild Magic</a> is another SWIG wrapped code. It is however a gaming library, but you could manipulate the SWIG library file to exclude any undesired graphics stuff from the Python API.

I am looking for a good and well developed library for geometrical manipulations and evaluations in python, like:

<ul>
<li>evaluate the intersection between two lines in 2D and 3D (if present)</li>
<li>evaluate the point of intersection between a plane and a line, or the line of intersection between two planes</li>
<li>evaluate the minimum distance between a line and a point</li>
<li>find the orthonormal to a plane passing through a point</li>
<li>rotate, translate, mirror a set of points</li>
<li>find the dihedral angle defined by four points</li>
</ul>

I have a compendium book for all these operations, and I could implement it but unfortunately I have no time, so I would enjoy a library that does it. Most operations are useful for gaming purposes, so I am sure that some of these functionalities can be found in gaming libraries, but I would prefer not to include functionalities (such as graphics) I don't need.

Any suggestions ? Thanks

Good geometry library in python?

Python

我正在寻找一个好的和开发良好的库，用于python中的几何操作和评估，例如：计算二维和三维中两条直线之间的交点(如果是平面和直线之间的交点，或者两条直线和点之间的交线)查找通过点的平面的正交方向旋转，平移，镜像一组点查找由四个点定义的二面角<>F213</>我有一本关于所有这些操作的简明手册，我可以实现它，但不幸的是我没有时间，所以我会喜欢一个做它的库。大多数操作对于游戏都很有用，所以我确信其中一

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