Hipparchus is a library of lightweight, self-contained
mathematics and statistics components addressing the most common problems not available in the Java programming language.
Fully featured particle system sandbox.
Extremely dynamic particle system using particle emitters, particle modifiers and particle renderers. A lot of implementations available: point emitter, line emitter, gravity point modifier, velocity transformation, point sprite renderer, model renderer
... [More], ...
Written in java.
Open Source.
Cross Plattform. [Less]
kepler is a library of C routines for astronomical calculations. It features the following:
* The entire VSOP87 theory for calculating the positions of the eight planets.
* The entire ELP 2000-82B theory for calculating the position of the Moon.
* An analytical theory for calculating Pluto's
... [More] position for the period 1700AD-2100AD.
* The ability to convert osculating orbital elements to heliocentric coordinates.
* The latest IAU 2006 precession and IAU 2000A nutation models.
* Routines for calculating sidereal time using the current IAU resolutions.
* An implementation of the Ron/Vondrak theory of annual aberration.
* Routines for Julian date calculations.
* Routines for coordinate transformations, rotations and parallax corrections. [Less]
Free implementation of the DWG format written in C. Supports read operations for DWG versions R13, R14, R2000 and R2004. Will support write in the future.
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