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====Definition====
The elliptic cylinders are defined in a 3D space by their origin, their local frame, their height and the two radii defining the elliptic basis :

[[File:ellipticCylinderFinite.PNG|center]]

====Implementation====
The Elliptic Cylinder object in the SIRIUS library implements the [MAT_GEO_CylinderInterface cylinder interface]. Please refer to the [{{JavaDoc3.4.1}}/org/apache/commons/math3/geometry/euclidean/threed/EllipticCylinder.html Javadoc] for a complete list of public methods.

====Instantiation====
The object is built from three vectors (Vector3D) and three doubles :

<syntaxhighlight lang="java">
Vector3D originCone = new Vector3D(1.0, 1.0, 1.0);
Vector3D direction = new Vector3D(2.0, 0.0, 0.0);
Vector3D inputUvector = new Vector3D(1.0, 1.0, 0.0);
double radiusA = 4.0;
double radiusB = 2.0;
double height = 5.0;
EllipticCylinder cylinder = new EllipticCylinder(originCone, direction, inputUvector, radiusA, radiusB, height);
</syntaxhighlight>

The local frame is built such as :

* W is the direction vector once normalized
* U is orthogonal to W and its direction is defined by the 'input U vector"
* V completes the frame

====Usage====
Please refer to the [MAT_GEO_Home#HInteractions Interactions with other geometrical objects section] for methods inherited from the Shape interface.

User Manual 3.4.1 Elliptic cylinder - Historique des versions

Admin : Page créée avec « ====Definition==== The elliptic cylinders are defined in a 3D space by their origin, their local frame, their height and the two radii defining the elliptic basis : Fil... »

Admin : Page créée avec « ====Definition==== The elliptic cylinders are defined in a 3D space by their origin, their local frame, their height and the two radii defining the elliptic basis : Fil... »