WOLFRAM SYSTEM MODELER
VectorVisualizing a vector quantity (force, torque, etc.) |
SystemModel["Modelica.Mechanics.MultiBody.Visualizers.Advanced.Vector"]
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Model Vector defines a vector that is dynamically visualized at the defined location (see variables below). The vector length does not represent a physical length, but a different 3-dimensional quantity (such as force, torque, speed, …), except for RelativePosition. 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.
quantity |
Value: Types.VectorQuantity.Force Type: VectorQuantity Description: Quantity of the coordinates |
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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) |
Form |
Type: Real |
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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 |
R |
Type: Orientation Description: Orientation object to rotate the world frame into the vector frame |
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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.Advanced Visualizing an arrow with variable size |
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Modelica.Mechanics.MultiBody.Visualizers.Advanced Visualizing a double arrow with variable size |