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--- doc:user:conditions:rotations [2022/04/28 17:03] – boman
+++ doc:user:conditions:rotations [2022/04/28 17:17] (current) – [Case #3: 2 successive Rotations imposed around 2 axes] boman
@@ Line 50: / Line 50: @@
  ===== Case #3: 2 successive Rotations imposed around 2 axes =====
+  loadingset.defineRot2(gObject, field, axe1, ampl1, fct1,
+                                        axe2, ampl2, fct2, option)
+| ''gObject'' | Geometric entity |
+| ''field''   | name of the variable which is concerned by the motion (only ''Field3D(TXTYTZ,RE)'' is allowed) |
+| ''axe1''    | first axis of rotation (''Axe'' object). |
+| ''ampl1''   | amplitude of the first rotation |
+| ''fct1''    | [[doc:user:general:fonctions]] of the first rotation (can only depend on time) |
+| ''axe2''    | second axis of rotation (''Axe'' object). The motion of this axis drives the global translation of the object |
+| ''ampl2''   | amplitude of the second rotation |
+| ''fct2''    | [[doc:user:general:fonctions]] of the second rotation (can only depend on time)  |
+| ''option''  | = ''False'' : the boundary condition is a given angle, in degrees \\ = ''True'' : the boundary condition is a given angular speed, in degrees/second |
-    loadingset.defineRot2(gObject, field, axe1, ampl1, fct1, axe2, ampl2, fct2, option)
+The geometry is transformed in the following way:
+  * the rotation around the FIRST axis is applied to the object,
-| ''gObject'' | Geometric entity |
+  * then, the object is translated according to the SECOND axis motion,
-| ''field''  | name of the variable which is concerned by the motion (only ''Field3D(TXTYTZ,RE)'' is allowed) |
+  * finally, the geometry is rotated around the SECOND axis.
-| ''axe1''   | first axis of rotation (`Axe` object) |
-| ''ampl1''  | amplitude of the first rotation |
-| ''fct1''   | [[doc:user:general:fonctions]] of the first rotation (can only depend on time) |
-| ''axe2''   | second axis of rotation (`Axe` object) |
-| ''ampl2''  | amplitude of the second rotation |
-| ''fct2''   | [[doc:user:general:fonctions]] of the second rotation (can only depend on time)  |
-| ''option'' | = ''False'' : the boundary condition is a given angle, in degrees \\ = ''True'' : the boundary condition is a given angular speed, in degrees/second |
+In other words, it means that the second axis of ''defineRot2'' behaves as the single axis of ''defineRot''.