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ephysics/README.md
Edouard DUPIN 078fc33309 [LICENCE] change ZLib to MPL-2 with athoriqzation of author: 
Email exchange:

On 29.09.2017 14:35 Edouard DUPIN wrote:
Hello,

I have fork your physic engine and update it to fit better with my 3d
game engine and my framework.

I do many change:
  - on assert policy (I do not like it)
  - the back-end use of the vector3D and quaternion, that I have
already an other implementation...
  - Log management
  - Other build system (lutin)
  - organisation of doxygen (all in the header)
  - remove dependency of the STL (in progress)
  - some bugs ...
  - ...

And I have a problem with the licence. You use BSD-3 that is a good
point, but this licence does not force the user to send your their
modification. Then I ask you to permit me to change the licence of the
FORK in MPL-2 that have the benefit to force developer to publish the
modification and permit to use the software in a proprietary
application without contamination.

Best regards

Edouard DUPIN

https://github.com/HeeroYui
https://github.com/atria-soft
https://github.com/musicdsp

answers from chappuis.daniel@XXXXXXX.yyy
Hello,

I am glad that you have found the ReactPhysics3D library to be useful.
You said that you have found bugs. Maybe I have already found and fixed some of them but do not hesitate to report them
here (https://github.com/DanielChappuis/reactphysics3d/issues) if not done yet.

Concerning the license. The library is not under the BSD-3 license but under the zlib license (https://opensource.org/licenses/Zlib).
With this license, it is allowed to use the software in a proprietary application without contamination. Regarding your request to
change the license to the MPL-2, you can do it with the following condition : You need to add the following text in all the source files
of ReactPhysics3D where the license will change. It must always be clear where the original code is coming from.

--------------- TEXT TO ADD TO THE LICENSE IN EACH FILE -------------------------
Original ReactPhysics3D C++ library by Daniel Chappuis <http://www.reactphysics3d.com/>
This code is re-licensed with permission from ReactPhysics3D author.
---------------------------------------------------------------------------------

For example, you can see here how the flow/react library (java port of ReactPhysics3D) has been re-licensed from
ReactPhysics3D (https://github.com/flow/react/blob/develop/src/main/java/com/flowpowered/react/constraint/ContactPoint.java)

I hope it fits your needs.

Best Regards,

Daniel Chappuis
2018-06-19 21:24:54 +02:00

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ephysics

ephysics is an open source C++ physics engine library that can be used in 3D simulations and games.

Website: http://www.ephysics.com

Author: Daniel CHAPPUIS (original project ReactPhysics3D) Author: Edouard DUPIN (forker)

Drawing

Features

ephysics has the following features:

  • Rigid body dynamics
  • Discrete collision detection
  • Collision shapes (Sphere, Box, Cone, Cylinder, Capsule, Convex Mesh, static Concave Mesh, Height Field)
  • Multiple collision shapes per body
  • Broadphase collision detection (Dynamic AABB tree)
  • Narrowphase collision detection (GJK/EPA)
  • Collision response and friction (Sequential Impulses Solver)
  • Joints (Ball and Socket, Hinge, Slider, Fixed)
  • Collision filtering with categories
  • Ray casting
  • Sleeping technique for inactive bodies
  • Integrated Profiler
  • Multi-platform (Windows, Linux, Mac OS X)
  • No dependencies (only OpenGL for the testbed application)
  • Documentation (User manual and Doxygen API)
  • Testbed application with demo scenes
  • Unit tests

License

The ephysics library is released under the MPL-2 license.