View source for FreeCAD/C2/Inscribe-a-Polygon/English

'''Title of script''': '''Inscribe a polygon'''

'''Author: ''' Rani Parvathy 

'''Keywords: ''' Freecad,snap tool, annotation tool, inscribe a polygon, equation of a pentagon, format object, color, change line width, annotation, format text, measure distance, video tutorial.



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|-
|| '''Visual Cue'''
||'''Narration'''
|-
||'''Slide Number 1'''

'''Title Slide '''
|| Welcome to the tutorial on '''Inscribe a Polygon.'''
|-
||'''Slide Number 2'''

'''Learning Objectives'''



|| In this tutorial, we will learn to,


* Inscribe a pentagon inside a circle
* Format the object with wireframe or flatlines
* Change color and line width
* Add annotation


|-
||'''Slide Number 3'''

'''Learning Objectives'''
|| 
* Set global or individual font size 
* Measure the length of an edge and
* About '''View''' toolbar, zoom and reset


|-
||'''Slide Number 4'''

'''System and Software Requirement'''



|| To record this tutorial, I am using


* '''Windows 11''' OS and 
* '''FreeCAD v0.21.1'''


|-
||'''Slide Number 5'''

'''Pre-requisites'''


'''https://www.spoken-tutorial.org'''



|| To follow this tutorial, 

* Learners must be familiar with the '''FreeCAD''' interface.
* For pre-requisite tutorials, please visit this site.


|-
||Open '''FreeCAD''' and go to Draft workbench. 
|| Open FreeCAD and start a new file.

Select Draft workbench.

Make sure that Orthographic and top view are selected.
|-
||Cursor on the polygon tool.
|| Let’s add a pentagon to this drawing.


'''FreeCAD''' inscribes a '''polygon''' inside of a circle.
|-
||'''Slide Number 6'''

'''Inscribing pentagon inside a circle'''


For inscribing pentagon of a circle

R=0.85 A

A is length of the side of the pentagon

R is the radius of the circle
|| Equation for inscribing a '''pentagon''' of a circle is '''R '''is equal to''' 0.85 times A'''.


Where '''A''' is the length of the side of the '''pentagon'''.


And''' R''' is the radius of the circle.
|-
||Click on the '''polygon tool '''in the '''Draft creation tools '''menu.
|| Click on the '''polygon''' tool as seen.
|-
||Cursor on '''Sides''' option in '''Combo view''', '''Model''' tab.

Change the number of '''Sides''' to 5.
|| Notice the '''Sides''' option in '''Combo view''', '''Model''' tab.


Change it to 5, since a pentagon has 5 sides.
|-
||Move the cursor to the drawing canvas.
|| Move the cursor to the drawing canvas and notice the + crosshair.
|-
||Left click hold and drag.
|| Left click hold and drag to form the desired polygon.


First only the circle on which the polygon is inscribed is seen.
|-
||Annotation on the Radius panel.


Highlight the radius change in the comboview panel.



|| Notice the '''Radius''' form on the left '''combo View''' panel.


As you drag to form a larger circle, the '''radius''' in the form also changes.
|-
||At ~ r=20, left click on the canvas.
|| I will keep the radius around 20mm and click on the canvas.


This fixes the radius of the circle and the polygon can be seen.



|-
||Cursor on the polygon.


Highlight the green outline on the selected object at editing.
|| 

To select an object click on it and notice the green outline.
|-
||Highlight polygon while editing.
|| The new object is also added in the '''combo view''' as polygon.
|-
||Click on polygon to select it.



|| Make sure the polygon is selected in the combo view.



|-
||Highlight in video editing.


Cursor on Property in Model tab.

Place the cursor on the edge of the panel.


A two sided arrow appears on the edge.


Click and drag to resize the panel.

Highlight in video editing.



|| Place the cursor on the edge of the panel as seen.

Click and drag to resize the panel.


Properties of the object can be changed using the '''Model''' tab.
|-
||For Bounding box, choose true.


Show the green bounding box.
|| For the first option of the '''bounding box''', choose '''true'''.


Notice that a bounding box for the object is displayed.
|-
||Cursor near the bounding box.
|| This allows us to encompass the area of selected objects in the canvas. 
|-
||Toggle the bounding box off from the view menu.
|| We can also toggle this on or off from the view toolbar on the top menu.
|-
||Scroll down to '''object style'''.


Open the pull down menu for '''Display mode'''.(Draw style)


Select Wireframe for Display mode.
|| Scroll down to '''object style'''.


Click on the pull down menu for '''Display mode''' as seen here.


'''Wireframe''' shows only the edges of the object.
|-
||Choose '''Flat lines'''.
|| I will choose '''Flat lines''' now. 


This will enable us to draw a color shaded or color filled object.
|-
||Click on the form for '''line color'''.
|| Scroll down and click on the form for '''line color'''.


A '''Select color''' dialog box appears.


Some of you will have to click again for the dialog box to open.
|-
||Choose red and click on '''Ok'''.
|| I will choose red and click on '''OK'''.
|-
||Cursor on the selected 
|| When the object is selected, the outline is in green color.


Hence the change will not be visible at this point.
|-
||Change '''Line width''' to 8.

Highlight change in video editing.
|| Scroll down and change the '''line width''' to 8.
|-
||Scroll down. 


Click on the form for '''Shape color'''.



|| Scroll down to the '''Shape color'''.


Click on the form and open the '''select color''' option.
|-
||Choose orange color and click on '''Ok'''.



|| If the object has multiple faces, we can color the various faces differently.


I will choose an orange color and click on '''OK'''.
|-
||Cursor on transparency.
|| Notice that we can also change the transparency of the object here.
|-
||Cursor on circle tool in Draft tools.
|| Now, pause the video, and draw a circle partially overlapping the pentagon.
|-
||Cursor on '''flat lines''' and show filled '''pentagon'''.
|| Use '''flat lines''' for '''display mode''' and fill it with a color of your choice.
|-
||Cursor on '''transparency'''.
|| Then change the '''transparency''' level and notice the changes.
|-
||Left click on the canvas and notice the changes.
|| The color changes will be visible only when the object is not highlighted.
|-
||Click on one of the edges of the pentagon.
|| Next, let’s measure the distance of the side of the '''pentagon'''.


First click to select the edge of your choice.
|-
||Click on the '''Dimension tool '''on the '''Draft Annotation tools'''.
|| Next, click on the '''Dimension tool '''in the '''Draft Annotation tools'''.
|-
||Move the line a bit away from the selected line.
|| A line parallel to the selected line appears on the canvas.


Place it a bit away where you want the annotation to be placed.
|-
||Left click and notice the measured distance.
|| Left click to notice the measured line and annotation.


For some of you the font size may be very small and not visible.
|-
||
|| We can format the annotation globally or individually.
|-
||Select the '''Dimension''' label in the '''comboview''', '''model''' tab.
|| In the '''combo View''', '''model''' tab, Select the '''dimension''' label.
|-
||Open the '''line color''' selection dialog box in the '''graphics''' section.
|| Scroll down to the graphics section and '''line color'''.


Click once or twice depending on your system to open the select color dialog.
|- 
|| Choose red and click on '''ok'''.
|| Choose red and click on '''OK.'''
|-
||Scroll to '''text''' section.
|| Then, scroll to the '''text''' section in the panel below.
|-
||Change '''font size''' to 5 mm.
|| Go to the '''font size''' section and change it to 5 mm.


Now the text size changes.
|-
||Go to '''Edit''', '''Preferences'''.
|| To change the default font setting, go to '''Edit''', '''Preferences'''.
|-
||Select '''Draft''' tab on the left and then '''test and dimensions''' on the top.
|| Choose the '''Draft''' tab on the left.

Then choose the '''Text and dimensions''' on top.
|-
||Cursor on the text properties.
|| Set the desired parameters here for global setting.


The changes will apply only to the annotations that you will add later on.
|-
||Click on '''Cancel'''.
|| For now I will click on '''Cancel''' as I do not want to change them.
|-
||click on the '''measure distance''' tool on the '''View toolbar'''.
|| Let us measure the distance between two user chosen points. 


First click on the '''measure distance''' tool on the '''View toolbar'''.
|-
||Cursor on the report view window.
|| The report view window prompts the user to pick the first point.
|-
||Click on a point on the canvas.
|| Click on your desired first point.


I will choose one of the vertex of the pentagon.
|-
||Click on another vertex.
|| Then I will click on another vertex.


Notice the distance between them is now shown on the canvas. 
|-
|| Cursor on '''combo view''', '''model tab''' and show the added measurement.
|| Delete the measurements using the '''combo view''', '''model''' tab.


Select the object and delete it.
|-
||Cursor on '''View toolbar fit all''' and '''fit selection''' tooltip.
|| You may want to readjust the zoom level at any point.


Use the '''View toolbar''' options as seen to fit all objects or the selection.
|-
||Select an object and right click to open the context menu.
|| Many of these are also available as '''context menus'''.


Right click on the '''canvas''' with the selected object to access them.
|-
|| 
|| Users must practice to get familiarity with the various tools.
|-
||Click on '''File''', hover on '''save'''.
|| Save your work if desired.
|-
||Use '''File''', '''Exit''' to close '''FreeCAD'''.
|| Use '''File''', '''Exit''' to close '''FreeCAD'''.
|-
||'''Slide Number 7'''

'''Summary'''

|| Now let's summarize. 

In this tutorial, we, 


* Inscribed a pentagon
* Formatted color and line properties
* Added Annotation 
* Formatted the text properties and
* Measured distance between two points

|-

||'''Slide Number 8'''

'''Assignment'''

|| For assignment activity, please do the following.


* Draw a rectangle
* Draw a hexagon with A =25 mm.


Hint: For hexagon, A <nowiki>=</nowiki> r to inscribe on a circle.
|-
||'''Slide Number 9'''

'''Assignment'''
|| Practice to draw and format the properties of objects.


Hint: You may also use the parameters in combo View window to modify. 
|-
||'''Slide Number 10'''

'''Spoken Tutorial Project'''



|| This video summarises the '''Spoken Tutorial''' Project .


Please download and watch it.
|-
||'''Slide Number 11'''

'''Spoken Tutorial workshops'''

|| The '''Spoken Tutorial Project '''team,


<nowiki>* conducts workshops and</nowiki>* <div style="margin-left:0cm;margin-right:0cm;"><nowiki>* gives certificates.</nowiki>

Please write to us.
|-
||'''Slide Number 12'''

'''Forum for specific questions:'''
|| Please post your timed queries in this forum.
|-
||'''Slide Number 13'''

'''Acknowledgement'''
|| The Spoken Tutorial Project was established by the Ministry of Education, Government of India.
|-
|| 
|| Thank you for joining.
|-
|}