Voir la source de Main differences between V4.0 and V3.4.1

<font color=#556B2F>'''PATRIUS'''</font> V4.0 is a major release and has a simplified architecture: its former dependencies ('''Commons-Math''', '''OREKIT''' and the addons) have been merged into a single standalone library (''patrius_V4.0.jar''). Users only need to download one library for compilation purpose. To help migrate sources based on <font color=#556B2F>'''PATRIUS'''</font> 3.x, a script is available (search & replace all the import) and make it quite easy to update to <font color=#556B2F>'''PATRIUS'''</font> 4.0. The script will transform all Java files found under the current directory.

== Java 7 compatibility ==
<font color=#556B2F>'''PATRIUS'''</font> is now a <font color=#FF8C00>Java 7</font> project : all users need a <font color=#FF8C00>JRE</font> (or <font color=#FF8C00>JDK 7</font>) (or higher).

== Constant/continuous maneuvers ==
<font color=#4169E1>ConstantThrustManeuver</font> & <font color=#4169E1>VariableThrustManeuver</font> have been merged in [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/forces/maneuvers/ContinuousThrustManeuver.html ContinuousThrustManeuver]. Constructors use [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/properties/PropulsiveProperty.html PropulsiveProperty] object to set all parameters. Besides, the behavior and the numerical results are the same as before.

== Bug fixes ==
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/forces/atmospheres/AtmosphereData.html AtmosphereData] uses molar mass in kg/mol(and not in g/mol). [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/models/GlobalAeroModel.html GlobalAeroModel] results are affected.
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/Assembly.html Assembly] can now correctly handle mobile parts
* [[https://logiciels.cnes.fr/en/content/stela STELA]] propagator can use osculating parameters for its initial orbit.
* Some optimizations in:
** [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/time/AbsoluteDate.html AbsoluteDate]: around 5% gain in a lot of algorithms
** [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/math/analysis/polynomials/HelmholtzPolynomial.html HelmholtzPolynomial] 
** <font color=#FF8C00 title="Greenwhich True of Date">GTOD</font> frame : a big computation time issue has been fixed. All the frames of this branch now have the same performances as the <font color=#FF8C00  title="International Earth Rotation and Reference Systems Service">IERS</font> one.
* Normalized Earth potential coefficients can be used for order&degrees above '''86''' (numerical quality bug fix)

== API incompatibilities ==
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/forces/gravity/EarthGravitationalModelFactory.html EarthGravitationalModelFactory] methods need a new parameter to allow missing coefficients.
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/frames/configuration/FramesConfigurationBuilder.html FramesConfigurationBuilder]: the new method <font color=#4169E1>setEOP2000History()</font> replaces <font color=#4169E1>setEOPHistory()</font>
* <font color=#FF8C00 title="True of Date">TOD</font>, VEIS, <font color=#FF8C00 title="International Terrestial Reference Frame">ITRF</font> equinox based frames now need to be configured with <font color=#FF8C00 title="Earth Orientation parameters">EOP</font> History, through a [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/frames/configuration/FramesConfiguration.html FramesConfiguration]

== Regressions ==
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/models/GlobalAeroModel.html GlobalAeroModel]: some regression (about 10 cm after a 6h <font color=#FF8C00 title="Low Earth orbit">LEO</font> propagation) 
* Use of [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/propagation/numerical/multi/MultiNumericalPropagator.html MultiNumericalPropagator] & [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/Assembly.html Assembly]: small regression have been observed (~ 1e<sup>-14</sup>m)
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/models/cook/CnCookModel.html CnCookModel] and [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/assembly/models/cook/CtCookModel.html CtCookModel]: theses models have been fixed (former results were wrong)
* [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/forces/maneuvers/ContinuousThrustManeuver.html ContinuousThrustManeuver]: some numerical regression (ie : 1e<sup>-7</sup>m in position) can be observed while propagating through a maneuver
* Earth potential : for high order/degree, there are some numerical regression (1e<sup>-7</sup>m after 24h numerical propagation of <font color=#FF8C00 title="Low Earth orbit">LEO</font> orbit) but a better precision (see § bug fixes).

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