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如果你想深入理解FreeCAD,这里就是你该来的地方。你能学到如何为你的需求定制FreeCAD。

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FreeCAD最秒的好处之一,就是它给你的灵活性。你不需要作任何编译,不需要接触源代码,就可以写脚本,就可以作扩展,可触范围极广。所有的脚本都用Python完成。它是一门强大而简洁的编程语言。有了简洁的Python脚本,你有权触及FreeCAD的任何部分。比如说,你可以:

  • 创建和修改几何体:有没有这种情况?你需要的特殊对象,没有出现在FreeCAD的默认安装包里?你可以轻松创建一个新对象类型,既可以写脚本,也可以调配一个已有的类型。
  • 创建定制的工具和命令:目前,FreeCAD已经有了很广泛的功能,但是给终端用户的工具和命令还不是很多。不过,你已经可以很容易地创建自己的工具包了。
  • 修改界面:FreeCAD的用户界面还处于十分基础的阶段。但是如果你要有所扩展,工具都给你准备好了。比如说,你可以创建一个工具条,把你的工具都放进去;你也可以创建一个特殊面板,用来与你的工具互动,诸如此类。
  • 修改场景表现:建立和计算几何体,在屏幕上显示那个几何体,这件事在FreeCAD里有不同的流程来处理。场景元素显示在屏幕上的方式,你对此有完全控制权。所以,你可以修改那个表现,与它交互,或者加入各种各样的定制行为和屏幕组件。举几个例子,信息、拖拽、锚定或者暂时实体。

定制FreeCAD

在FreeCAD里写脚本

通则

模块

在FreeCAD中,功能性的东西被划分到各个模块,处理特定的数据类型和应用。FreeCAD有内建模块和扩展模块(插件)。插件模块一旦安装,它们就和内建模块一样方便触达。下面讲的是默认模块,FreeCAD的每一个安装包都包含了。

  • 内建模块是FreeCAD的主体模块。里面的工具,可以调整FreeCAD的一般配置、文档和内容。
  • 创建工作台展示给你如何创建自己的工作台。

Working with Meshes

Working with Parts

Accessing the Coin scenegraph

Controlling the Qt interface

Working with parametric objects

Examples

  • Code snippets : A collection of pieces of FreeCAD Python code, to serve as ingredients in your scripts...
  • Line drawing function: How to build a simple tool to draw lines
  • Dialog creation: How to construct dialogs with Qt designer, and use them in FreeCAD
  • Embedding FreeCAD: How to import FreeCAD as a Python module in other applications
  • The Draft Module adds basic 2d drawing functions to freecad. It is written entirely in Python, so it can be a good example if you want to write your own modules.
  • FreeCAD vector math library : A couple of handy functions to manipulate FreeCAD vectors. This library is also included in the Draft module.

API Functions

The complete API documentation of FreeCAD is located at http://www.freecadweb.org/api/ . It contains both C++ and Python APIs, and is not totally well formatted yet, which can be confusing when looking for python-only code. An easier to browse version can be found here. Note that it can be incomplete, since it is updated manually. For more accurate information, browse the modules directly from FreeCAD's Python console.

Advanced modification

Python tutorials

These are good generic tutorials, not specific to FreeCAD, that might interest you if you are totally new to python.

Python

PySide - How to create and manage FreeCAD's Qt UI interface from python

The following two references are PyQt specific (not PySide) but may offer some information of use:

Pivy - How to interact with FreeCAD's 3D scenes

Community projects

On the Community portal, you can find other FreeCAD-based projects run by the FreeCAD users community. If you are starting a new FreeCAD project, be sure to list it there! We also have a page with things you can do if you would like to Help FreeCAD.