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Context aware selection makes it possible to select the same Coin3D node in different hierarchies (i.e. context) without ambiguity. New/modified APIs in ViewProvider (the first two are the most crucial APIs for context aware selection to work): * getElementPicked(), supercedes getElement(). Given a Coin3D pick point, this function returns a dot separated subname reference as a path leads to the selected object. * getDetailPath(), supercedes getDetail(). Given a subname reference, this function returns an SoFullPath leads to the Coin3D node of the selected object or sub-element (with SoDetail). * (has)HiddenMarker(), check/return a special text marker for context aware override of object visibility. * partialRender(), render only part of the object based on given subname references. It can render, e.g. some faces of a solid, or some children of a container. It uses the 'secondary' extension of SoSelectionElementAction to select which elements to render or hide. The actually rendering functionality will be added in the following patch. * update()/onChanged(), modified to sync Visibility property from DocumentObject. * useNewSelectionModel(), modified to return the default true view parameter. This is for test in the early stage of Link development, probably not needed anymore. * getBoundingBox(), a convenience function to obtain the bounding box of a sub-object/element regardless of object's visibility. It uses getDetailPath() and SoGetBoundingBoxAction to obtain bounding box through Coin3D. It will be used in later sub-element box selection functionality. New/modified APIs in ViewProviderDocumentObject: * getElementPicked()/getDetailPath() provides actual implementation to support container like (sub)object selection without ambiguity. It relies on DocumentObject::getSubObject() to walk the path. * reattach(), called when undo deleteion * forceUpdate()/isUpdateForced(), force update even if object is invisible. These are used by Link to force update the visual of a linked object regardless of its visibility. * getLinkedViewProvider(), return the linked view provider with hierarchy. ViewProviderDocumentObjectPy: * Object attribute is made writtable. Assigning it is equaivalant of calling ViewProviderDocumentObject::attach() in Python.
Your own 3D parametric modeler
Website • Documentation • Forum • Bug tracker • Git repository
Overview
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Freedom to build what you want FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.
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Create 3D from 2D & back FreeCAD allows you to sketch geometry constrained 2D shapes and use them as a base to build other objects. It contains many components to adjust dimensions or extract design details from 3D models to create high quality production ready drawings.
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Designed for your needs FreeCAD is designed to fit a wide range of uses including product design, mechanical engineering and architecture. Whether you are a hobbyist, a programmer, an experienced CAD user, a student or a teacher, you will feel right at home with FreeCAD.
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Cross platform FreeCAD runs on Windows, Mac and Linux
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Underlying technology
- OpenCASCADE A powerful geometry kernel, the most important component of FreeCAD
- Coin3D library Open Inventor-compliant 3D scene representation model
- Python FreeCAD offers a broad Python API
- Qt Graphical User Interface built with Qt
Installing
Precompiled (installable) packages are available for Windows and Mac on the Releases page.
On most Linux distributions, FreeCAD is directly installable from the software center application.
Other options are described at the wiki Download page.
Build Status 
| Master | 0.18 | Translation |
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Compiling
Compiling FreeCAD requires installation of several libraries and their development files such as OpenCASCADe, Coin and Qt, listed in the pages below. Once this is done, FreeCAD can be simply compiled with cMake. On Windows, these libraries are bundled and offered by the FreeCAD team in a convenient package. On Linux, they are usually found in your distribution's repositories, and on Mac OSX and other platforms you will usually need to compile them yourself.
The pages below contain up-to-date build instructions:
Usage & Getting help
The FreeCAD wiki contains documentation on general FreeCAD usage, Python scripting, and development. These pages might help you get started:
The FreeCAD forum is also a great place to find help and solve specific problems you might encounter when learning to use FreeCAD.