Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- modellingcomponents:elements:kinematics [2020/02/07 11:40] – [Created trajectories and parameters] oliver
+++ modellingcomponents:elements:kinematics [2020/05/12 10:49] – [CoordinateSystem] oliver
@@ Zeile 1: / Zeile 1: @@
 ======CoordinateSystem======
-This element mostly is used to define a cartesian coordinate system, based on two given vectors using crossproducts, or by rotating a reference coordinate system by given angles about its axes. The element creates a trajectory with the name of the element and the type of a 3d-Vector of double values.
+This element is used to define a cartesian coordinate system, based on two given vectors using crossproducts, or by rotating a reference coordinate system by given angles about its axes. The element creates a trajectory with the name of the element.
-The given FirstAxis stays as first axis. The cross product between DefiningVector and the vector defined by FirstAxis defines the second axis. The third axis is defined by the cross product between the first axis and the second axis. This behavoir corresponds to Vicons BodyBuilder!
+The given FirstAxis stays as first axis. The cross product between DefiningVector and the vector defined by FirstAxis defines the second axis. The third axis is defined by the cross product between the first axis and the second axis. This behavoir corresponds to the software BodyBuilder of the company Vicon!
 The element can be used to create coordinate systems also by other ways, e.g. by rotating a given coordinate system around an axis. Also non orthogonal axes systems can be defined or a calibration can be used to fix a coordinate system on a given one.
@@ Zeile 33: / Zeile 33: @@
 ^ <name>_y | Vector3d | second column of the matrix with name <name>| | | X | always |
 ^ <name>_z | Vector3d | third column of the matrix with name <name>| | | X | always |
-^ <name>Position | Vector3d | Origin of the coordinate system | | | X | always |
+^ <name>Position | Vector3d | Origin of the coordinate system | | | X | only if it is not defined by a constant expression, e.g. vec(0.0,0.0,0.0).) |
 ^ <name>_XLocal | Vector3d | | X | | | after calibration |
 ^ <name>_YLocal | Vector3d | | X | | | after calibration |
@@ Zeile 62: / Zeile 62: @@
 ^ localPoint | | Instead of defining the point by coordinates in the laboratory/global system, it is possible to define the point by arbitrary local coordinates. The global coordinates of the point are then calculated by transforming with the given coordinate system. Note: This attribute needs the use of the attribute coordinateSystem. | No |
 ^ coordinateSystem | | Name of the coordinate system element which is used in two cases: 1. If the point is defined in local coordinates with the attribut "localPoint" it defines the corresponding coordinate system. 2. If calibration is used, than for static trial which is defined by switches given with the attributes calibrateIncludes/calibrateExcludes the point is transformed in local coordinates of the coordinate system which is given with this element. For all other trials the local coordinates are back transformed to the global coordinates using the current value of the coordinate system defined by this attribute. | No ^
-^ referencePoint | | In a static trial the distance to this point is calculated its trial mean. In no calibration trials this distance is used to translate the current position of the point to hold this fix distance. Note: This feature is not available in combination with the use of localPoint. | No |
+^ referencePoint | | In a static trial the distance to this point is calculated as a trial mean. In no calibration trials this distance is used to translate the current position of the point to hold this fix distance. Note: This feature is not available in combination with the use of localPoint. | No |
 ^ expr (deprecated) | | Mathematical formula which defnines the point. Note: Typically this attribut is not used. The formula is given as elements content instead. | No |
 ^ x, y, z (deprecated) | | These attributes allows an alternative definition of the point by seperate mathematical formulas for each of the three components. | No |
@@ Zeile 73: / Zeile 73: @@
 ^ calibrateIncludes | | | No |
 ^ calibrateExcludes | | | No |
-^ average | | additional calculation of the trial average. The value is saved as a parameter with the name of the element and "Average" as a suffix: <name of the element>Average | No |
+^ average | false | Additional calculation of the trial average. The value is saved as a parameter with the name of the element and "Average" as a suffix: <name of the element>Average, if this attribute is set to "true". | No |
 =====Examples====