Difference between revisions of "OpenModelica/C3/Icon-and-Diagram-Views/English"

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As we saw in previous tutorials, '''annotations''' can be better understood as '''records'''.
 
As we saw in previous tutorials, '''annotations''' can be better understood as '''records'''.
  
−
Hence, '''Icon and Diagram annotations''' can be considered as '''records''' with '''coordinateSystem''' and '''graphics''' as the fields.
+
 
 +
Hence, '''Icon and Diagram annotations''' can be considered  
 +
*as '''records''' with '''coordinateSystem'''  
 +
*and '''graphics''' as the fields.
 +
 
  
 
We will look at each one of them individually.  
 
We will look at each one of them individually.  
Line 87: Line 91:
  
 
|-
 
|-
−
||  
+
|| Switch to '''OMEdit'''
 
|| Now et me switch to '''OMEdit'''.  
 
|| Now et me switch to '''OMEdit'''.  
  
Line 98: Line 102:
 
Please watch prerequisite tutorials for more information on this model.
 
Please watch prerequisite tutorials for more information on this model.
  
−
I have already opened '''bouncingBallWithAnnotations''' in '''OMEdit'''.  
+
|-
 +
|| Double-click icon
 +
||I have already opened '''bouncingBallWithAnnotations''' in '''OMEdit'''.  
  
 
Double-click on its icon in '''Libraries Browser'''.
 
Double-click on its icon in '''Libraries Browser'''.
  
 
|-
 
|-
−
||  
+
|| Switch to '''Icon View'''
 
|| The model is now open in '''Icon View'''.  
 
|| The model is now open in '''Icon View'''.  
  
Line 109: Line 115:
  
 
|-
 
|-
−
||  
+
|| Switch to '''OMEdit'''
 
|| Let me shift '''OMEdit''' window to the left for better visibility.
 
|| Let me shift '''OMEdit''' window to the left for better visibility.
  
 
|-
 
|-
−
|| Right-click on white space. Select '''Properties'''.
+
|| Right-click on white space >> Select '''Properties'''.
 
|| You can observe a circle on white background in '''Icon View''' of this model.  
 
|| You can observe a circle on white background in '''Icon View''' of this model.  
  
−
I will be referring to the white space in '''Icon View''' as canvas.  
+
|-
 +
||Point to the white space
 +
||I will be referring to the white space in '''Icon View''' as '''canvas'''.  
  
−
Note that the canvas is divided into grids.
+
Note that the '''canvas''' is divided into grids.
  
−
We will first learn how to manipulate the properties of canvas.  
+
|-
 +
||
 +
||We will first learn how to manipulate the properties of '''canvas'''.  
  
−
Then We shall learn how to insert a circle and a polygon.  
+
Then we shall learn how to insert a '''circle''' and a '''polygon'''.  
  
−
Right click on the canvas beside circle.
+
|-
 +
||Right-click on canvas >> select '''Properties'''
 +
||Right-click on the canvas beside '''circle'''.
  
 
Select '''Properties'''.
 
Select '''Properties'''.
Line 139: Line 151:
  
 
|-
 
|-
−
||  
+
|| Point to '''Extent'''
−
|| '''Extent''' signifies the extent of canvas.
+
|| '''Extent''' signifies the extent of '''canvas'''.
  
 
|-
 
|-
 
|| Hover over '''Left''' and '''Top'''.
 
|| Hover over '''Left''' and '''Top'''.
−
|| The fields named '''Left''' and '''Top''' correspond to coordinates of top left corner of the canvas.  
+
|| The fields named '''Left''' and '''Top''' correspond to coordinates of top left corner of the '''canvas'''.  
  
 
'''Left''' corresponds to the horizontal coordinate and '''Top''' corresponds to the vertical coordinate.
 
'''Left''' corresponds to the horizontal coordinate and '''Top''' corresponds to the vertical coordinate.
  
 
|-
 
|-
−
||  
+
|| Hover over '''Bottom''' and '''Right'''
−
|| Similarly, '''Bottom''' and '''Right''' correspond to the coordinates of bottom right corner of canvas.
+
|| Similarly, '''Bottom''' and '''Right''' correspond to the coordinates of bottom right corner of '''canvas'''.
 +
 
 
|-
 
|-
 
|| ‘Left’ → -200.00
 
|| ‘Left’ → -200.00
Line 165: Line 178:
 
|-
 
|-
 
|| Right-click on white space. Select '''Properties'''.
 
|| Right-click on white space. Select '''Properties'''.
−
|| Right-click on canvas once again.
+
|| Right-click on canvas once again and select '''Properties'''.
−
 
+
−
and select '''Properties'''.
+
  
 
|-
 
|-
−
||  
+
|| Point to '''Grid'''
 
|| '''Grid''' signifies the size of grid.  
 
|| '''Grid''' signifies the size of grid.  
  
 
Note that the units of '''extent''' and '''grid''' differ by the '''Scale Factor'''.
 
Note that the units of '''extent''' and '''grid''' differ by the '''Scale Factor'''.
  
−
Change horizontal field in grid to '''4''' units.
+
|-
 +
||Horizontal field = 4 >> click '''Ok'''
 +
||Change horizontal field in grid to '''4''' units.
  
 
Click on '''OK'''.
 
Click on '''OK'''.
Line 181: Line 194:
 
|-
 
|-
 
||  
 
||  
−
|| Note that the size of grid has increased in the canvas.
+
|| Note that the size of grid has increased in the '''canvas'''.
  
−
These properties of '''Icon View '''can also be manipulated using '''Icon annotation''' in the '''Text View'''.  
+
|-
 +
||
 +
||These properties of '''Icon View '''can also be manipulated using '''Icon annotation''' in the '''Text View'''.  
  
 
Note that any change in '''Icon View''' is accordingly reflected in '''Icon annotation'''.
 
Note that any change in '''Icon View''' is accordingly reflected in '''Icon annotation'''.
  
 
|-
 
|-
−
|| Click on '''Text View'''.
+
|| Click on '''Text View''' >> Scroll down
 
|| Let us try to understand this.  
 
|| Let us try to understand this.  
  
Line 211: Line 226:
 
It has two pairs of numbers.  
 
It has two pairs of numbers.  
  
−
We have already seen how to manipulate the '''extent''' using '''Properties''' Dialog box.
+
We have already seen how to manipulate the '''extent''' using '''Properties''' dialog box.
  
 
|-
 
|-
Line 237: Line 252:
 
|| The second pair represents the coordinates of bottom right corner of white space.
 
|| The second pair represents the coordinates of bottom right corner of white space.
  
−
Note that these 4 numbers correspond to top, bottom, left and right fields, we have seen in '''Properties''' dialogue box.
+
Note that these 4 numbers correspond to '''top, bottom, left''' and '''right''' fields, we have seen in '''Properties''' dialog box.
  
 
|-
 
|-
−
||  
+
|| Point to '''extent'''
−
|| Now, let me change '''extent''' using '''Properties''' dialogue box of '''Icon View'''.  
+
|| Now, let me change '''extent''' using '''Properties''' dialog box of '''Icon View'''.  
  
 
We will then see if it changes correspondingly in '''annotation''' of '''Text View'''.
 
We will then see if it changes correspondingly in '''annotation''' of '''Text View'''.
Line 247: Line 262:
 
|-
 
|-
 
|| Click on '''Icon View'''.
 
|| Click on '''Icon View'''.
−
|| Let me switch to Icon View'''.
+
|| Let me switch to '''Icon View'''.
  
 
|-
 
|-
−
|| Right-click on white space. Select '''Properties'''.
+
|| Right-click on white space >> Select '''Properties'''.
 
|| Right-click on the canvas and select '''Properties'''.
 
|| Right-click on the canvas and select '''Properties'''.
  
 
|-
 
|-
−
|| Left → -150.00. Click on '''Ok'''.
+
|| Left → -150.00 >> Click on '''Ok'''.
 
|| Change the '''Left''' field to '''-150.00'''.  
 
|| Change the '''Left''' field to '''-150.00'''.  
  
Line 271: Line 286:
 
|| Notice that the first pair of coordinates in '''extent''' has changed to '''{-150,-100}''' from '''{-200,-100}'''.
 
|| Notice that the first pair of coordinates in '''extent''' has changed to '''{-150,-100}''' from '''{-200,-100}'''.
  
−
This is due to the change that we have made in '''Icon View''' using '''Properties''' dialogue box.
+
This is due to the change that we have made in '''Icon View''' using '''Properties''' dialog box.
  
 
Hence, any change in '''Icon annotation''' creates a corresponding change in '''Icon View''' and vice-versa.
 
Hence, any change in '''Icon annotation''' creates a corresponding change in '''Icon View''' and vice-versa.
Line 282: Line 297:
  
 
|-
 
|-
−
||  
+
|| Back to the slides
 
|| Let me go back to the slides.
 
|| Let me go back to the slides.
  
Line 303: Line 318:
  
 
|-
 
|-
−
||  
+
|| Back to '''OMEdit'''
 
|| Let me go back to '''OMEdit'''.
 
|| Let me go back to '''OMEdit'''.
  
 
|-
 
|-
−
||  
+
|| Point to '''circle'''
 
|| We shall understand these annotations in three steps.  
 
|| We shall understand these annotations in three steps.  
  
−
'''bouncingBallWithAnnotations''' already has a circle inserted in its '''Icon View'''.  
+
'''bouncingBallWithAnnotations''' already has a '''circle''' inserted in its '''Icon View'''.  
  
−
The circle is obtained using '''Ellipse''' annotation.  
+
The '''circle''' is obtained using '''Ellipse''' annotation.  
  
 
Let us first try to modify its properties.
 
Let us first try to modify its properties.
Line 323: Line 338:
  
 
|-
 
|-
−
|| Right-click on '''blue space'''. Select '''Properties'''.
+
|| Right-click on '''blue space''' >> Select '''Properties'''.
−
|| Right-click on the blue space within circle.  
+
|| Right-click on the blue space within '''circle'''.  
  
 
Select '''Properties'''.
 
Select '''Properties'''.
Line 330: Line 345:
 
|-
 
|-
 
|| Hover over '''OriginX''' and '''OriginY'''.
 
|| Hover over '''OriginX''' and '''OriginY'''.
−
|| '''OriginX''' is the horizontal coordinate of center of ellipse.  
+
|| '''OriginX''' is the horizontal coordinate of center of '''ellipse'''.  
  
−
Similarly, '''OriginY''' is the vertical coordinate of the center of ellipse.
+
Similarly, '''OriginY''' is the vertical coordinate of the center of '''ellipse'''.
  
 
|-
 
|-
 
|| Hover over '''Extent1X'''
 
|| Hover over '''Extent1X'''
−
|| '''Extent1X''' is the horizontal coordinate of left-most point on the ellipse.
+
|| '''Extent1X''' is the horizontal coordinate of left-most point on the '''ellipse'''.
  
 
|-
 
|-
 
|| Hover over '''Extent1Y'''
 
|| Hover over '''Extent1Y'''
−
|| '''Extent1Y''' is the vertical coordinate of top-most point on the ellipse.
+
|| '''Extent1Y''' is the vertical coordinate of top-most point on the '''ellipse'''.
  
 
|-
 
|-
 
||  
 
||  
−
|| Similarly, '''Extent2X''' and '''Extent2Y''' correspond to the right-most and bottom-most points on the ellipse.
+
|| Similarly, '''Extent2X''' and '''Extent2Y''' correspond to the right-most and bottom-most points on the '''ellipse'''.
  
 
|-
 
|-
Line 356: Line 371:
 
This allows you to change the color of border.  
 
This allows you to change the color of border.  
  
−
Let me choose '''Red''' and click on '''OK'''.
+
Let me choose red and click on '''OK'''.
  
 
|-
 
|-
Line 378: Line 393:
 
|-
 
|-
 
||  
 
||  
−
|| Notice the change in color of border to '''Red''' and the increase in thickness.
+
|| Notice the change in color of border to red and the increase in thickness.
  
 
|-
 
|-
Line 394: Line 409:
 
Click on '''Ok'''.
 
Click on '''Ok'''.
  
−
This color represents the color to be filled in the interior of the ellipse.
+
This color represents the color to be filled in the interior of the '''ellipse'''.
  
 
|-
 
|-
−
|| Click on '''FillPattern'''.
+
|| Click on '''FillPattern''' >> click on '''Ok'''
 
|| Now click on Fill Pattern''' drop-down menu.  
 
|| Now click on Fill Pattern''' drop-down menu.  
  
Line 438: Line 453:
 
|-
 
|-
 
|| Click on '''Icon View'''.
 
|| Click on '''Icon View'''.
−
|| Now, let me switch to '''Icon View''' to construct a new ellipse using the tool bar.  
+
|| Now, let me switch to '''Icon View''' to construct a new '''ellipse''' using the tool bar.  
  
 
Click on '''Icon View'''.
 
Click on '''Icon View'''.
Line 444: Line 459:
 
|-
 
|-
 
||  
 
||  
−
|| Let me rearrange the existing circle to free up some space.
+
|| Let me rearrange the existing '''circle''' to free up some space.
  
 
|-
 
|-
Line 460: Line 475:
 
|-
 
|-
 
|| Click on '''Ellipse''' button in the toolbar
 
|| Click on '''Ellipse''' button in the toolbar
−
|| Now to insert a new ellipse click on '''Ellipse''' button in the toolbar.
+
|| Now to insert a new '''ellipse''', click on '''Ellipse''' button in the toolbar.
  
 
|-
 
|-
 
|| Hold and drag the cursor
 
|| Hold and drag the cursor
−
|| Left click on somewhere in the canvas and hold the mouse and drag it.  
+
|| Left click somewhere in the '''canvas''' and hold the mouse and drag it.  
  
−
Leave the mouse after an ellipse has been created.
+
Leave the mouse after an '''ellipse''' has been created.
  
 
|-
 
|-
−
|| Right-click on '''Ellipse'''
+
|| Right-click on '''Ellipse''' >> Click on '''Ok'''
−
|| Right-click on the ellipse and select '''Properties''' to change its properties as you wish.  
+
|| Right-click on the '''ellipse''' and select '''Properties''' to change its properties as you wish.  
  
 
Click on '''Ok'''
 
Click on '''Ok'''
Line 482: Line 497:
 
* '''Text'''
 
* '''Text'''
  
−
|| Similarly, you may insert a Line, Polygon, Rectangle and Text using the '''Tool Bar'''.
+
|| Similarly, you may insert a '''Line, Polygon, Rectangle''' and '''Text''' using the '''Tool Bar'''.
  
 
|-
 
|-
Line 517: Line 532:
  
 
|-
 
|-
−
||  
+
|| Shift '''OMEdit''' Window to the right
 
|| Let me shift '''OMEdit''' Window to the right.  
 
|| Let me shift '''OMEdit''' Window to the right.  
  
−
Save the model by pressing '''Ctrl + S'''.
+
|-
 +
||Press '''Ctrl+S'''
 +
||Save the model by pressing '''Ctrl + S'''.
  
 
|-
 
|-
Line 533: Line 550:
  
 
|-
 
|-
−
||  
+
|| Back to the slides
 
|| Now let me go back to the slides.
 
|| Now let me go back to the slides.
  
Line 544: Line 561:
  
 
'''Assignment'''
 
'''Assignment'''
−
|| As an assignment, insert a line, polygon, rectangle and text in the '''Icon View''' of model.  
+
|| As an assignment, insert a '''line, polygon, rectangle''' and '''text''' in the '''Icon View''' of model.  
  
 
Modify their properties and understand their annotations.
 
Modify their properties and understand their annotations.

Latest revision as of 07:33, 30 March 2016

Visual Cue Narration
Slide:

Title Slide

Welcome to the spoken tutorial on Icon and Diagram Views.
Slide:

Learning Objectives

In this tutorial, we are going to learn:
  • How to specify icon and diagram views of a class.
  • How to insert a polygon and ellipse in Icon/Diagram View.
Slide:

System Requirements

To record this tutorial, I am using:
  • OpenModelica version 1.9.2
  • You may use any of the following operating systems to practice this tutorial:

Linux, Windows, Mac OS X or FOSSEE OS on ARM.

Slide:

Prerequisites

* To understand and practice this tutorial, you need knowledge of class definition in Modelica.
  • You need to know how to specify annotations.
  • Prerequisite tutorials are mentioned on our website.

Please go through them.

Slide:

Icon and Diagram Views

Icon and Diagram Views enable viewing a model graphically.

Annotations can be used to specify Icon and Diagram Views of a model.

Icon View is specified using Icon Annotation whereas Diagram View is specified using Diagram Annotation.

They enable drag-and-drop functionality for component-oriented modeling.

We will discuss more about this feature in upcoming tutorials.

Slide:

Icon/Diagram Annotation

Now, let us try to understand the syntax of Icon and Diagram Annotations.

As we saw in previous tutorials, annotations can be better understood as records.


Hence, Icon and Diagram annotations can be considered

  • as records with coordinateSystem
  • and graphics as the fields.


We will look at each one of them individually.

Slide:

coordinateSystem

coordinateSystem may be considered as a record with the following fields:
  • extent,
  • initialScale,
  • preserveAspectRatio and
  • grid.

We will understand them through an example.

Slide:

Syntax of Icon/Diagram Annotation

Here is an example demonstrating the syntax of Icon/Diagram Annotation.
Switch to OMEdit Now et me switch to OMEdit.

We will understand icon and diagram annotations through an example named bouncingBallWithAnnotations.

Please download this file from our website.

This model was used in previous tutorials.

Please watch prerequisite tutorials for more information on this model.

Double-click icon I have already opened bouncingBallWithAnnotations in OMEdit.

Double-click on its icon in Libraries Browser.

Switch to Icon View The model is now open in Icon View.

Switch to Icon View if it opens in either Diagram or Text View.

Switch to OMEdit Let me shift OMEdit window to the left for better visibility.
Right-click on white space >> Select Properties. You can observe a circle on white background in Icon View of this model.
Point to the white space I will be referring to the white space in Icon View as canvas.

Note that the canvas is divided into grids.

We will first learn how to manipulate the properties of canvas.

Then we shall learn how to insert a circle and a polygon.

Right-click on canvas >> select Properties Right-click on the canvas beside circle.

Select Properties.

OMEdit - Properties A dialog box pop ups as shown.

Note that there are categories named

  • Extent,
  • Grid and
  • Component.
Point to Extent Extent signifies the extent of canvas.
Hover over Left and Top. The fields named Left and Top correspond to coordinates of top left corner of the canvas.

Left corresponds to the horizontal coordinate and Top corresponds to the vertical coordinate.

Hover over Bottom and Right Similarly, Bottom and Right correspond to the coordinates of bottom right corner of canvas.
‘Left’ → -200.00

Click on Ok.

Now, let us change the Left field to -200 units.

Click on Ok.

/* Icon View */ Note that the canvas expanded to the left by 100 units.
Right-click on white space. Select Properties. Right-click on canvas once again and select Properties.
Point to Grid Grid signifies the size of grid.

Note that the units of extent and grid differ by the Scale Factor.

Horizontal field = 4 >> click Ok Change horizontal field in grid to 4 units.

Click on OK.

Note that the size of grid has increased in the canvas.
These properties of Icon View can also be manipulated using Icon annotation in the Text View.

Note that any change in Icon View is accordingly reflected in Icon annotation.

Click on Text View >> Scroll down Let us try to understand this.

Go to the top of modeling area and click on Text View.

Scroll down a little bit.

/* bouncingBallWithAnnotations */

// Icon(coordinateSystem(extent = {{-200, -100}, {100, 100}}, grid = {4, 2})

//

coordinateSystem, as we have seen in slides, is a field in Icon annotation.
// Icon(coordinateSystem(extent = {{-200, -100}, {100, 100}}, grid = {4, 2})

//

extent is a field in coordinateSystem.

It has two pairs of numbers.

We have already seen how to manipulate the extent using Properties dialog box.

// Icon(coordinateSystem(extent = {{-200, -100}, {100, 100}}, .

//

The first pair of numbers is {-200,-100}.
// Icon(coordinateSystem(extent = {{-200, -100}, {100, 100}}, .

//

The first number of this pair that is -200 denotes the horizontal coordinate of the top left hand corner of canvas.
// Icon(coordinateSystem(extent = {{-200, -100}, {100, 100}}, .

//

Similarly, -100 represents the vertical coordinate of the same point.
// Icon(coordinateSystem(extent = {{-200, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {4, 2})

//

The second pair represents the coordinates of bottom right corner of white space.

Note that these 4 numbers correspond to top, bottom, left and right fields, we have seen in Properties dialog box.

Point to extent Now, let me change extent using Properties dialog box of Icon View.

We will then see if it changes correspondingly in annotation of Text View.

Click on Icon View. Let me switch to Icon View.
Right-click on white space >> Select Properties. Right-click on the canvas and select Properties.
Left → -150.00 >> Click on Ok. Change the Left field to -150.00.

Click on Ok.

Click on Text View. Click on Text View.

Scroll down.

// Icon(coordinateSystem(extent = {{-150, -100}, {100, 100}}, grid = {2, 2})

//

Notice that the first pair of coordinates in extent has changed to {-150,-100} from {-200,-100}.

This is due to the change that we have made in Icon View using Properties dialog box.

Hence, any change in Icon annotation creates a corresponding change in Icon View and vice-versa.

// Icon(coordinateSystem(extent = {{-150, -100}, {100, 100}}, grid = {4, 2})

//

A discussion of other fields of coordinateSystem like ScaleFactor is beyond the scope of this tutorial.
Back to the slides Let me go back to the slides.
Slide:

Graphical Items

We have discussed earlier that Icon annotation has coordinateSystem and graphics as its elements.

graphics record may have the following items:

  • Line
  • Rectangle
  • Ellipse
  • Polygon
  • Text and
  • Bitmap

Now, we will discuss how to insert these items in Icon and Diagram views.

Back to OMEdit Let me go back to OMEdit.
Point to circle We shall understand these annotations in three steps.

bouncingBallWithAnnotations already has a circle inserted in its Icon View.

The circle is obtained using Ellipse annotation.

Let us first try to modify its properties.

// graphics = {Ellipse(lineColor = {0, 0, 255}, fillColor = {85, 170, 255}, fillPattern = FillPattern.Solid, extent = {{-100, 100}, {100, -100}}, endAngle = 360)} // Note that an Ellipse is inserted and its properties specified in graphics field of icon annotation.

Let me go to Icon View.

Right-click on blue space >> Select Properties. Right-click on the blue space within circle.

Select Properties.

Hover over OriginX and OriginY. OriginX is the horizontal coordinate of center of ellipse.

Similarly, OriginY is the vertical coordinate of the center of ellipse.

Hover over Extent1X Extent1X is the horizontal coordinate of left-most point on the ellipse.
Hover over Extent1Y Extent1Y is the vertical coordinate of top-most point on the ellipse.
Similarly, Extent2X and Extent2Y correspond to the right-most and bottom-most points on the ellipse.
Hover over Line Style Line Style is used to vary the properties of border line.
Click on Color. Choose Red in Color Palette. Click on Color under Line Style.

This allows you to change the color of border.

Let me choose red and click on OK.

Click on Pattern. Click on Pattern drop down menu under Line Style.

This allows you to change the pattern of border.

I have chosen a solid line.

Click on Thickness. Thickness field specifies the thickness of border.

Change it to 0.5 units.

Click on Ok. Click on Ok
Notice the change in color of border to red and the increase in thickness.
Right-click on Ellipse. Select Properties Now right click on the circle once again and select Properties.
Click on Color Fill Style Under Fill Style, click on Color.
Choose Black in Color Palette. Choose Black in the Color Palette.

Click on Ok.

This color represents the color to be filled in the interior of the ellipse.

Click on FillPattern >> click on Ok Now click on Fill Pattern drop-down menu.

Choose FillPattern.Horizontal and click on Ok.

Note that the fill color changed to black

and the pattern changed from solid to horizontal lines.

Click on Text View Let me now switch to Text View to explain Ellipse annotation.

Click on Text View.

Scroll down.

// graphics = {Ellipse(lineColor = {0, 0, 255}, fillColor = {85, 170, 255}, fillPattern = FillPattern.Solid, extent = {{-100, 100}, {100, -100}}, endAngle = 360) // lineColor takes three numbers which define the color of border.

Each of these three numbers can take values between 0 and 255.

They correspond to the RGB intensity of the color used.

graphics = {Ellipse(lineColor = {0, 0, 255}, fillColor = {85, 170, 255}, fillPattern = FillPattern.Horizontal, extent = {{-100, 100}, {100, -100}}, endAngle = 360) fillPattern specifies the pattern to be filled in the interior.
graphics = {Ellipse(lineColor = {0, 0, 255}, fillColor = {85, 170, 255}, fillPattern = FillPattern.Horizontal, extent = {{-100, 100}, {100, -100}}, endAngle = 360) extent is identical in context to the extent field of coordinateSystem.

LineThickness represents the thickness of border.

Note that all these fields can be changed using Properties dialog box as we have already seen.

Click on Icon View. Now, let me switch to Icon View to construct a new ellipse using the tool bar.

Click on Icon View.

Let me rearrange the existing circle to free up some space.
Right-click on circle and select Properties. Right click on the circle and choose properties.
‘Extent2Y’ → 0

Click on Ok.

Change Extent2Y to 0 units.

Click on Ok.

Click on Ellipse button in the toolbar Now to insert a new ellipse, click on Ellipse button in the toolbar.
Hold and drag the cursor Left click somewhere in the canvas and hold the mouse and drag it.

Leave the mouse after an ellipse has been created.

Right-click on Ellipse >> Click on Ok Right-click on the ellipse and select Properties to change its properties as you wish.

Click on Ok

Hover over the following tools:
  • Line
  • Polygon
  • Rectangle
  • Text
Similarly, you may insert a Line, Polygon, Rectangle and Text using the Tool Bar.
Click on Diagram View Now, let me explain Diagram View.

Click on Diagram View.

Note that a line has been inserted here.

The properties of this line are specified in Diagram annotation.

Click on Text View. Switch to Text View to understand Diagram annotation.

Scroll down.

Diagram(...) Diagram annotation is similar in its syntax to Icon annotation.

It has coordinateSystem and graphics as its component records.

Diagram(...,, graphics = {Line(origin = {-10, 0}, points = {{-50, -50}, {50, 50}}, color = {0, 0, 255}, pattern = LinePattern.Dash, thickness = 3)}) The properties of the Line inserted in Diagram View are specified here.

The fields of Line annotation can be easily understood.

Now, let us understand the difference between Icon and Diagram Views.

Shift OMEdit Window to the right Let me shift OMEdit Window to the right.
Press Ctrl+S Save the model by pressing Ctrl + S.
The figure shown in Icon View appears as an icon in the Libraries Browser as can be seen here.
Whereas the Diagram View is used significantly in component-oriented modeling.

We shall learn more about component-oriented modeling in the upcoming tutorials.

Back to the slides Now let me go back to the slides.
Slide: Ellipse Ellipse has the following fields as we have already discussed.
Slide:

Assignment

As an assignment, insert a line, polygon, rectangle and text in the Icon View of model.

Modify their properties and understand their annotations.

This brings us to the end of this tutorial.
Slide:

About the Spoken Tutorial project

Watch the video available at the following link.

It summarises the spoken tutorial project.

Slide:

Spoken Tutorial Workshops

We conduct workshops using spoken tutorials

Please contact us.

Slide:

Forum to answer questions

If you have questions in this spoken tutorial, please visit the following website.
Slide:

Textbook Companion Project

We coordinate coding of solved examples of popular books.

Please visit the website shown.

Slide:

Lab Migration Project

We help migrate commercial simulator labs to OpenModelica.

Please visit the website for more information on our lab migration project.

Slide:

Acknowledgements

Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.
Slide:

Thanks

We thank the development team of OpenModelica for their support.

Thank you for joining me in this tutorial.

Contributors and Content Editors

Kaushik Datta, Nancyvarkey

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