WOLFRAM SYSTEM MODELER
VectorVisualizing a vector quantity (force, torque, etc.) |
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Wolfram Language
In[1]:=
SystemModel["Modelica.Mechanics.MultiBody.Visualizers.Advanced.Vector"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Model Vector defines an arrow that dynamically visualizes a physical vector of selected quantity at the defined location (see variables below). Thus, the arrow length does not represent a physical length (except, of course, for quantity = RelativePosition), but a different 3-dimensional quantity (such as force, torque, speed, …), defined by MultiBody.Types.VectorQuantity. That allows the vectors of similar quantities to be scaled appropriately during post-processing. This is useful even for RelativePosition, and in that case to disable or exaggerate the relative positions.
The dialog variables R, r, coordinates, color,
specularCoefficient, quantity, headAtOrigin, and twoHeadedArrow
are declared as (time varying) input variables.
If the default equation is not appropriate, a corresponding
modifier equation has to be provided in the
model where a Vector instance is used, e.g., in the form
Visualizers.Advanced.Vector vectorForce(coordinates = {sin(time),cos(time),0});
Variable color is an Integer vector with 3 elements,
{r, g, b}, and specifies the color of the shape.
{r, g, b} are the "red", "green" and "blue" color parts.
Note, r, g and b are given in the range 0 … 255.
The predefined type
MultiBody.Types.Color
contains a menu definition of the colors used in the MultiBody
library together with a color editor.
Parameters (1)
| quantity |
Value: Types.VectorQuantity.Force Type: VectorQuantity Description: Quantity of the coordinates |
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Inputs (7)
| R |
Default Value: Frames.nullRotation() Type: Orientation Description: Orientation object to rotate the world frame into the vector frame |
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| r |
Default Value: {0, 0, 0} Type: Position[3] (m) Description: Position vector from origin of world frame to origin of vector frame, resolved in world frame |
| coordinates |
Default Value: {0, 0, 0} Type: Real[3] Description: Coordinates of the vector resolved in vector frame |
| color |
Default Value: Types.Defaults.ArrowColor Type: Color Description: Color of vector |
| specularCoefficient |
Default Value: 0.7 Type: SpecularCoefficient Description: Material property describing the reflecting of ambient light (= 0 means, that light is completely absorbed) |
| headAtOrigin |
Default Value: false Type: Boolean Description: = true, if the vector is pointing towards the origin of vector frame |
| twoHeadedArrow |
Default Value: false Type: Boolean Description: = true, if the arrow has two heads after each other (pointing in the same direction) |
Outputs (10)
| Form |
Type: Real |
|---|---|
| rxvisobj |
Type: Real[3] Description: x-axis unit vector of shape, resolved in world frame |
| ryvisobj |
Type: Real[3] Description: y-axis unit vector of shape, resolved in world frame |
| rvisobj |
Type: Position[3] (m) Description: position vector from world frame to shape frame, resolved in world frame |
| vectorCoordinates |
Type: Real[3] |
| vectorColor |
Type: Color Description: RGB representation of color |
| vectorSpecularCoefficient |
Type: SpecularCoefficient Description: Reflection of ambient light (= 0: light is completely absorbed) |
| vectorQuantity |
Type: VectorQuantity Description: Enumeration defining the kind of physical quantity represented by the vector |
| vectorTwoHeadedArrow |
Type: Boolean |
| vectorHeadAtOrigin |
Type: Boolean |
Components (1)
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R |
Type: Orientation Description: Orientation object to rotate the world frame into the vector frame |
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Used in Components (17)
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Modelica.Mechanics.MultiBody.Forces External force acting at frame_b, defined by 3 input signals and resolved in frame world, frame_b or frame_resolve |
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Modelica.Mechanics.MultiBody.Forces External torque acting at frame_b, defined by 3 input signals and resolved in frame world, frame_b or frame_resolve |
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Modelica.Mechanics.MultiBody.Forces External force and torque acting at frame_b, defined by 3+3 input signals and resolved in frame world, frame_b or in frame_resolve |
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Modelica.Mechanics.MultiBody.Forces Force acting between two frames, defined by 3 input signals and resolved in frame world, frame_a, frame_b or frame_resolve |
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Modelica.Mechanics.MultiBody.Forces Torque acting between two frames, defined by 3 input signals and resolved in frame world, frame_a, frame_b or frame_resolve |
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Modelica.Mechanics.MultiBody.Forces Force and torque acting between two frames, defined by 3+3 input signals and resolved in frame world, frame_a, frame_b or frame_resolve |
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Modelica.Mechanics.MultiBody.Joints Free motion joint (6 degrees-of-freedom, 12 potential states) |
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Modelica.Mechanics.MultiBody.Sensors Measure absolute kinematic quantities of frame connector |
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Modelica.Mechanics.MultiBody.Sensors Measure relative kinematic quantities between two frame connectors |
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Modelica.Mechanics.MultiBody.Sensors Measure the distance between the origins of two frame connectors |
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Modelica.Mechanics.MultiBody.Sensors Measure cut force vector |
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Modelica.Mechanics.MultiBody.Sensors Measure cut torque vector |
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Modelica.Mechanics.MultiBody.Sensors Measure cut force and cut torque vector |
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Modelica.Mechanics.MultiBody.Visualizers Visualizing an arrow with dynamically varying size in frame_a |
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Modelica.Mechanics.MultiBody.Visualizers Visualizing an arrow with dynamically varying size in frame_a based on input signal |
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Modelica.Mechanics.MultiBody.Visualizers.Advanced Visualizing an arrow with variable size |
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Modelica.Mechanics.MultiBody.Visualizers.Advanced Visualizing a double arrow with variable size |