PAL (software)

Poll without page-refresh

	del.icio.us
	Digg
	Furl
	Reddit
	Rojo
	Add to OnlyWire

Physics Abstraction Layer


Developed by	http://sourceforge.net/projects/pal
OS	Cross-platform
Type	Middleware
License	Three clause BSD license
Website	pal.sourceforge.net

The Physics Abstraction Layer (PAL) is an open source cross platform physical simulation API abstraction system. It is similar to a physics engine wrapper, however it is far more flexible providing extended abilities. PAL is free software, released under the BSD license.

PAL is a high-level interface for low-level physics engines used in games, simulation systems, and other 3D applications. It supports a number of dynamic simulation methodologies, including rigid body, liquids, soft body, ragdoll and vehicle dynamics. PAL features a simple C++ API, intuitive objects (e.g. Solids, Joints, Actuators, Sensors, Materials), and COLLADA, Scythe Physics Editor and XML-based file storage.

The Physics Abstraction Layer provides a number of benefits over directly using a physics engine:

Flexibility - It allows developers to switch between different physics engines to see which engine provides their needs, as well as quickly testing a new engine.
Portable - Developers are able to use the physics engine which provides the best performance for different platforms, and are able to write platform independent code.
Security - If a middleware provider is acquired by another company or development is discontinued, developers can switch engines.
Scaleable - The abstraction layer allows developers to run their code on handheld console platforms up to supercomputers
Ease of use - Implementation details of the physics engine are abstracted, providing a cleaner interface to the developer
Benchmarking - Researchers can directly compare the performance of various dynamic simulations systems

PAL is designed with a pluggable abstract factory allowing code to be written and compiled once and allowing runtime selection of a different physics engines, as well as feature upgrades.

1 Supported Engines
2 Supported File Formats
3 Benchmark
4 See also
5 External links

Supported Engines

PAL supports multiple physics engines, including:

Box2D
Bullet
DynaMechs
Impulse-based dynamic simulation
JigLib
Newton Game Dynamics
Open Dynamics Engine
OpenTissue
PhysX (formerly NovodeX and incorporating Meqon)
Simple Physics Engine
Tokamak physics engine
True Axis

Supported File Formats

PAL supports multiple file formats, including:

Benchmark

The PAL project provides a set of standard benchmarks allowing developers to directly compare the physics engines and select the engine that provides the best solution in terms of computational efficiency and physical accuracy. Care should be taken when deciding on which engine to actually use though, since engines may be tweaked in ways which PAL doesn't support.