WOLFRAM SYSTEM MODELER

Lines

Visualizing a set of lines as cylinders with variable size, e.g., used to display characters (no Frame connector)

Wolfram Language

In[1]:=

SystemModel["Modelica.Mechanics.MultiBody.Visualizers.Internal.Lines"]

Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

With model Lines a set of dynamic lines is defined that are located relatively to frame_a. Every line is represented by a cylinder. This allows, e.g., to define simple shaped 3-dimensional characters. Note, if the lines are fixed relatively to frame_a, it is more convenient to use model Visualizers.Internal.FixedLines. An example for dynamic lines is shown in the following figure:

The two letters "x" and "y" are constructed with 4 lines by providing the following data for input variable lines

lines = {[0, 0; 1, 1],[0, 1; 1, 0],[1.5, -0.5; 2.5, 1],[1.5, 1; 2, 0.25]}

Via vectors n_x and n_y a two-dimensional coordinate system is defined. The points defined with variable lines are with respect to this coordinate system. For example "[0, 0; 1, 1]" defines a line that starts at {0,0} and ends at {1,1}. The and color of all line cylinders are identical and are defined by parameters.

Inputs (9)

R	Default Value: Frames.nullRotation() Type: Orientation Description: Orientation object to rotate the world frame into the object frame
r	Default Value: {0, 0, 0} Type: Position[3] (m) Description: Position vector from origin of world frame to origin of object frame, resolved in world frame
r_lines	Default Value: {0, 0, 0} Type: Position[3] (m) Description: Position vector from origin of object frame to the origin of 'lines' frame, resolved in object frame
n_x	Default Value: {1, 0, 0} Type: Real[3] Description: Vector in direction of x-axis of 'lines' frame, resolved in object frame
n_y	Default Value: {0, 1, 0} Type: Real[3] Description: Vector in direction of y-axis of 'lines' frame, resolved in object frame
lines	Default Value: zeros(0, 2, 2) Type: Position[:,2,2] (m) Description: List of start and end points of cylinders resolved in an x-y frame defined by n_x, n_y, e.g., {[0,0;1,1], [0,1;1,0], [2,0; 3,1]}
diameter	Default Value: 0.05 Type: Length (m) Description: Diameter of the cylinders defined by lines
color	Default Value: {0, 128, 255} Type: Color Description: Color of cylinders
specularCoefficient	Default Value: 0.7 Type: SpecularCoefficient Description: Reflection of ambient light (= 0: light is completely absorbed)

Components (2)

	R	Type: Orientation Description: Orientation object to rotate the world frame into the object frame
	cylinders	Type: Shape[n] Description: Visualizing an elementary object with variable size; all data have to be set as modifiers (see info layer)