blocks|key|326250|text|pythonOCC也是一个有趣的选择！|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|326251|entityMap|0|LINK|mutability|MUTABLE|url|http://www.pythonocc.org/^0|0|9|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://www.pythonocc.org/" rel="nofollow noreferrer">pythonOCC</a> is an interesting option too!

blocks|key|756298|text|也许FreeCAD的Python级别可以满足您的需求。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|756299|entityMap|0|LINK|mutability|MUTABLE|url|http://sourceforge.net/apps/mediawiki/free-cad/index.php?title=Scripting^0|2|7|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]]]]

Maybe <a href="http://sourceforge.net/apps/mediawiki/free-cad/index.php?title=Scripting" rel="nofollow noreferrer">FreeCAD</a>'s Python level can supply what you're requesting.

blocks|key|2668784|text|Open+Cascade|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2668785|entityMap|0|LINK|mutability|MUTABLE|url|http://www.opencascade.org/^0|0|C|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://www.opencascade.org/" rel="nofollow noreferrer">Open Cascade</a>

blocks|key|2676191|text|走C%2B%2B的道路，如果你有Direct3D/OpenGL的经验，你可以胡乱使用TetGen和GTS来把一些东西放在一起。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2676192|警告：学习曲线非常长。|style|BOLD|2676193|更新：我最近一直在尝试使用Carve+CSG，到目前为止，我对结果很满意。您可以很容易地从木板中减去切割，以获得您想要的结果。|2676194|entityMap|0|LINK|mutability|MUTABLE|url|http://tetgen.berlios.de/|1|http://gts.sourceforge.net/|2|http://carve-csg.com/^0|12|6|0|19|3|1|0|0|3|0|0|3|D|9|2|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]|$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@$A|13|B|14|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|15|8|@$A|16|B|17|F|G]]|9|@$A|18|B|19|1|1A]]|C|$]]|$1|J|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]|T|$5|M|N|O|C|$P|U]]]]

Going the C++ way, if you have Direct3D/OpenGL experience, you could muck around with <a href="http://tetgen.berlios.de" rel="nofollow noreferrer">TetGen</a> and <a href="http://gts.sourceforge.net" rel="nofollow noreferrer">GTS</a> to put something together.

WARNING: Very Long learning curve.

UPDATE: I have experimenting with <a href="http://carve-csg.com/" rel="nofollow noreferrer">Carve CSG</a> recently and am happy with the results so far. You could easily subtract the cut from the wood panel to get the results you want.

blocks|key|756309|text|HeeksCAD可能会为您做这项工作。http://code.google.com/p/heekscad/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|756310|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/heekscad/^0|J|Y|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]]]]

HeeksCAD might do the job for you. <a href="http://code.google.com/p/heekscad/" rel="nofollow noreferrer">http://code.google.com/p/heekscad/</a>

blocks|key|763996|text|我们使用的是sgCore|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|763997|非常强大和简单的库。|763998|entityMap|0|LINK|mutability|MUTABLE|url|http://www.geometros.com/sgcore/index.htm^0|6|6|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]]]]

We are using <a href="http://www.geometros.com/sgcore/index.htm" rel="nofollow">sgCore</a>

Very powerful and simple library.

blocks|key|764034|text|使用3D+Minkowski+Sums，CGAL看起来可能能够进行3D扫描。(请参阅页面下方的"Glide“部分。)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|764035|到目前为止，我能看到的使用Minkowski和的唯一限制是，如果通过3D路径扫描对象，您似乎无法同时旋转对象。(在这一点上，我可能错了。)扫描时旋转非常有用，例如，如果您尝试使用旋转圆柱体外表面上的铣刀或铣刀模拟切割路径，例如对于铣床上的第4轴或第5轴转台。但是最初的问题是关于沿着2D路径扫描3D对象，模拟平面上的切割，比如一块木头，所以这个限制对我来说可能很重要，但对OP来说并不重要。|764036|CGAL由OpenSCAD使用。OpenSCAD有一个minkowski()基元，它似乎使用了CGAL+3D+Minkowski功能。OpenSCAD可能能够提供快速的可行性测试，也可能提供长期的刀具路径可视化解决方案。(上次我看这篇文章时，我不这么认为，但这可能是OpenSCAD的旧版本。)|764037|CGAL是C%2B%2B，开源，双重许可。到目前为止，我发现了两个python绑定：|764038|764039|http://cgal-python.gforge.inria.fr/+--+unmaintained|unordered-list-item|764040|http://code.google.com/p/cgal-bindings/+--实验性的，不完整的，不确定它是否包括3D+Minkowski+yet|764041|764042|entityMap|0|LINK|mutability|MUTABLE|url|http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Minkowski_sum_3/Chapter_main.html|1|http://www.cgal.org/|2|http://www.openscad.org/|3|http://cgal-python.gforge.inria.fr/|4|http://code.google.com/p/cgal-bindings/^0|2|H|0|K|4|1|0|0|5|8|2|0|0|0|0|Z|3|0|0|13|4|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@$A|17|B|18|1|19]|$A|1A|B|1B|1|1C]]|C|$]]|$1|D|3|E|5|6|7|1D|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|1E|8|@]|9|@$A|1F|B|1G|1|1H]]|C|$]]|$1|H|3|I|5|6|7|1I|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|1J|8|@]|9|@]|C|$]]|$1|K|3|L|5|M|7|1K|8|@]|9|@$A|1L|B|1M|1|1N]]|C|$]]|$1|N|3|O|5|M|7|1O|8|@]|9|@$A|1P|B|1Q|1|1R]]|C|$]]|$1|P|3|-4|5|6|7|1S|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1T|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]|Y|$5|T|U|V|C|$W|Z]]|10|$5|T|U|V|C|$W|11]]|12|$5|T|U|V|C|$W|13]]|14|$5|T|U|V|C|$W|15]]]]

<a href="http://www.cgal.org" rel="nofollow">CGAL</a> looks like it might be able to do 3D sweeps, using <a href="http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Minkowski_sum_3/Chapter_main.html" rel="nofollow">3D Minkowski Sums</a>. (See the "Glide" section further down the page.)

The only limitation I can see so far with using Minkowski sums is that, if sweeping an object through a 3D path, you don't seem to be able to rotate the object at the same time. (I could be wrong about this.) Rotating while sweeping would be useful, for instance, if you are trying to simulate cutting a path using a router or milling bit on the outside surface of a rotating cylinder, such as for a 4th or 5th axis rotary table on a milling machine. But the original question was about sweeping 3D objects along 2D paths, simulating cuts on a plane such as a block of wood, so this limitation might be important to me but not to OP.

CGAL is used by <a href="http://www.openscad.org/" rel="nofollow">OpenSCAD</a>. OpenSCAD has a minkowski() primitive that appears to use the CGAL 3D Minkowski feature. OpenSCAD might be able to provide a quick feasibility test as well as maybe a long-term toolpath visualization solution. (The last time I looked at this I didn't think so, but that may have been an older version of OpenSCAD.)

CGAL is C++, open source, dual licensed. So far I've found two python bindings:

<ul>
<li><a href="http://cgal-python.gforge.inria.fr/" rel="nofollow">http://cgal-python.gforge.inria.fr/</a> -- unmaintained</li>
<li><a href="http://code.google.com/p/cgal-bindings/" rel="nofollow">http://code.google.com/p/cgal-bindings/</a> -- experimental, incomplete, not sure if it includes 3D Minkowski yet</li>
</ul>

blocks|key|4106998|text|虽然不完全是一个库，但其中一种方法可能是在这些库中的大多数都支持的2D到3D挤出功能的基础上构建。执行此操作的暂定算法可能是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4106999|4107000|Get+bit+profile+as+a+2D+shape+(您可能具有沿着作为刀具路径的直线或圆弧的轮廓，创建作为切削形状的3D实体。|ordered-list-item|4107001|在每个顶点(例如，在直线路径与曲线路径的连接处))，对钻头轮廓进行“旋转挤出”或“旋转挤出”以生成转角半径--大多数库也应支持此操作。工件从2开始重复，直到所有刀轨都完成为止。|4107002|对(|4107003|-|4107004|)执行CSG布尔减法。|4107005|4107006|该算法似乎充满了边缘情况，但到目前为止，我还没有想到任何边缘情况。我想知道为什么，如果它是如此简单，没有更多的包已经这样做了。|4107007|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|Y|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

While not exactly a library, one way of doing this might be to build on top of the 2D-to-3D extrusion ability that most of these libraries do support. A tentative algorithm for doing this might be:

<ol>
<li>Get bit profile as a 2D shape (you're likely to have this already).</li>
<li>Extrude that profile along the line or arc that is the toolpath, creating a 3D solid that is the shape of the cut.</li>
<li>At each vertex (say, where a straight path joins a curved one), do a "rotate extrude" or "revolve extrude" of the bit profile to generate the corner radius -- most libraries should support this operation as well.</li>
<li>Repeat from 2 until done with all toolpaths.</li>
<li>Do a CSG boolean subtraction of (workpiece - set_of_toolpaths).</li>
</ol>

That algorithm seems like it might be fraught with edge cases, but I haven't been able to think of any so far. I'm wondering why, if it's this simple, there aren't more packages already doing it.

I'm trying to put together a simple program that will let me visualize a series of consecutive cuts on a wood panel using a router with a particular cutting head. I'm trying to find a geometry library that is capable of subtractively modifying 3D shapes or solids by sweeping other 3D solids through them.

Specifically, I'd like to be able to define a rectangular solid (the wood panel) and then define a bit profile shape, and take cuts through the rectangular solid (sometimes on a straight line, sometimes on a circular arc). Does anyone know of anything that will do this?

Subtractively sweep a solid through another in python (or C++)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在试着组合一个简单的程序，让我可视化一系列连续的切割在木板上使用一个特定的切割头的路由器。我正在尝试寻找一个几何库，它能够通过扫描其他3D实体来对3D形状或实体进行减法修改。具体地说，我希望能够定义矩形实体(木板)，然后定义钻头轮廓形状，并通过矩形实体进行切割(有时在直线上，有时在圆弧上)。有谁知道有什么可以做到这一点的吗？

问在python (或C++)中以减法扫掠一个实体穿过另一个
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回答 8

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