KTurtle/C3/Special-Commands-in-KTurtle/English - Revision history

Madhurig at 10:12, 18 December 2013

2013-12-18T10:12:34Z

Madhurig at 10:11, 18 December 2013

2013-12-18T10:11:14Z

Madhurig at 09:27, 22 April 2013

2013-04-22T09:27:49Z

Madhurig at 07:35, 2 April 2013

2013-04-02T07:35:58Z

Madhurig at 07:30, 2 April 2013

2013-04-02T07:30:55Z

Madhurig at 07:25, 2 April 2013

2013-04-02T07:25:56Z

Madhurig at 07:18, 2 April 2013

2013-04-02T07:18:18Z

Show changes

Madhurig at 07:51, 25 March 2013

2013-03-25T07:51:14Z

Madhurig at 07:49, 25 March 2013

2013-03-25T07:49:09Z

Madhurig: Created page with '{|border =1 !Visual Cue !Narration |- ||Slide Number 1 Title slide || Hello everybody. Welcome to this tutorial on '''Special Commands''' in '''KTurtle.''' |- ||'''Slide Num…'

2013-03-19T11:39:47Z

Created page with '{|border =1 !Visual Cue !Narration |- ||Slide Number 1 Title slide || Hello everybody. Welcome to this tutorial on '''Special Commands''' in '''KTurtle.''' |- ||'''Slide Num…'

New page

{|border =1
!Visual Cue
!Narration
|-
||Slide Number 1

Title slide
||
Hello everybody.

Welcome to this tutorial on '''Special Commands''' in '''KTurtle.'''
|-
||'''Slide Number 2'''

'''Learning Objectives'''
||In this tutorial, we will learn about

* '''“learn”''' command and

* '''“random”''' Command
|-
||'''Slide Number 3'''

'''System Requirement'''
||To record this tutorial I am using,

Ubuntu Linux OS version. 12.04.

KTurtle version. 0.8.1 beta.
|-
||'''Slide Number 4'''

'''Pre-requisites'''
||We assume that you have basic working knowledge of KTurtle

If not,

for relevant tutorials, please visit our website.

'''http://spoken-tutorial.org'''
|-
||Switch to '''KTurtle''' Application

'''Dash home''' >>In the Search bar type '''KTurtle.'''

Click on the '''KTurtle''' icon.
||Let's open a new KTurtle Application.

Click on '''Dash home.'''

In the Search bar, type '''KTurtle'''.

Click on the''' KTurtle''' icon.
|-
||
||Let's first look at “learn” command
|-
||'''Slide Number 5'''
'''learn''' command
||''' learn''' is special command as it is used to create your own commands.

'learn' Command you create can take input and return output.
|-
||'''Zoom text'''
||I will zoom the program text to have a clear view.
|-
||
'''Switch to Kturtle Window'''

'''repeat 4'''

{

'''forward 10'''

'''turnleft 90'''

}
||
Let us take a look at how a new command is created.

Let's type a code in the editor to draw a square:

'''repeat 4''' within curly brackets

{
'''forward 10'''

'''turnleft 90'''

}

here the number '''10''' specfies the length of the side of the square.
|-
||Highlight '''learn''' and '''square''' commands
||Now let's learn the commands involved to draw a square, using the '''learn''' command.

We will name of this set of commands to draw a square as square.

The command ''''learn'''' is followed by the name of the command to be learnt, in this case it is a '''square.'''
|-
||Type the code
||Let's type the following code

'''learn''' space '''square $x'''

let's include the '''learn''' command within curly brackets
{

'''repeat 4'''
{

let's repace number 10 by $x

'''forward $x'''

'''turnleft 90'''
}
}
|-
|| Highlight '''square''' command
||New command that we have defined is called '''square.'''

'''square''' takes one input argument, '''$x''' to set the size of the square.

Note that when you run this code, square returns no output.

The command '''learn''' is just 'learning' the other command square to be used later.

'''square''' command can now be used like a normal command in the rest of the code.
|-
||Type the code
||Let me add few more lines here.
Let's type

'''learn square $x'''

{

'''repeat 4'''

{

'''forward $x'''

'''turnleft 90'''

}
}

'''go 200,200'''

'''square 100'''
|-
||'''Run the code'''
||Let's click on Run code

Turtle draws a square on the canvas.

The command square can be used any where any number of times in the program.
|-
||Replace 100 by 50.
||Let's now replace 100 by 50.
|-
||'''Run the code'''
||Let's run again

'''Turtle''' draws an another square with dimension 50.

Please note that this command can be used only within the scope of this program
|-
||'''Clear code'''
||I will clear the current code from editor.

Type “clear” command and Run to clean the canvas.
|-
||
||Next we will learn about “random” command.
|-
||'''Slide Number 6'''

"random" command
||

“random” command takes input and gives output.

Syntax for this command is “random X,Y”

where X and Y are two inputs.

X sets minimum output and Y sets maximum.

Output is a randomly chosen number between X and Y.
|-
||
||Let's put the “random” command to use in the application.
|-
||
||
I already have the code in a text editor.

Let me explain the code.
|-
||Highlight '''reset'''
||“reset” command sets '''Turtle''' to default position
|-
||Highlight random 1,20
||Here, the command '''random 1,20''' selects a random number which is equal or greater than 1 and equal or lesser than 20,
and assigns it to the variable x.
|-
||Highlight '''repeat 36'''

{

'''forward $x '''

'''turnleft 10'''
}
||The '''repeat''' command and the commands within curly brackets draw a circle
|-
||'''reset''' '''

$x=random 1,2'''0

'''repeat 36'''

{

'''forward $x'''

'''turnleft 10'''

}
||I will copy the code from text editor and paste it into '''KTurtle''' editor.

Pause the tutorial and type the program into your '''KTurtle''' editor.

Resume the tutorial after typing the program
|-
||'''Run the code'''
||When we run this code,

'''Turtle''' draws a circle which is between 1 and 20 on the canvas.

Let us execute this code a few times,

and you can see that a circle with a different size is generated each time.

Every time you exceute this code, a circle with a different radius is drawn on the canvas.
|-
||
||
Let us now use both the learn and random commands in an example.
|-
||clear current code
||I will clear the current code and '''Run''' to clean the canvas.
|-
||
||I already have a code in the Text editor.

I will explain the code.
|-
||
Highlight '''reset'''
||“reset” command sets Turtle to its default position.
|-
||Highlight canvassize 300,300
||'''canvassize 300,300''' sets the width and height of the canvas to 300 pixels each.
|-
||Highlight '''$R, $G''', and '''$B'''
||'''$R, $G,''' and '''$B''' are three variables to which I am assigning random values between 0 and 255.
|-
||Highlight '''canvascolor $R,$G,$B''' ,
||In the command '''canvascolor $R,$G,$B''' ,

the Red-Green-Blue combination is replaced by the values assigned to the
variables R, G, and B in the previous step.

The canvas color is randomly set when this command is executed.
|-
||Highlight $red, $green and $blue
||$red, $blue, $green are another set of variables

to which random values between 0 and 255 are assigned randomly.

'''pencolor $red, $green, $blue''' the Red-Green-Blue combination values are replaced by the variables

'''$red''', '''$green''' and '''$blue''' to which random values were assigned
in the previous step.
|-
||Highlight '''pencolor $red,$blue,$green'''
||The color of the pen is also set randomly when the command is executed.
|-
||Highlight '''penwidth 2'''
||'''penwidth 2''' sets the width of the pen to 2 pixels.
|-
||code to a circle
|| Next I have entered the code to learn to draw a circle.

Here $x represents the size of the circle.

The '''repeat''' command followed by the code in curly brackets draws a circle.
|-
||Highlight '''go commands and circle commands'''
||
The next set of commands that is the '''go''' commands
followed by the '''circle''' commands draws circles with the specified sizes.
|-
||Example circle
||For example:
“ circle 5” draws a circle of size 5

At the co-ordinates X and Y specified in the go command.

For each circle, I have specified different positions on the canvas.
|-
||'''reset'''

'''canvassize 300,300'''

'''$R= random 0,255'''

'''$G=random 0,255'''

'''$B=random 0,255'''

'''canvascolor $R,$G,$B'''

'''$red=random 0,255'''

'''$blue=random 0,255'''

'''$green=random 0,255'''

'''pencolor $red,$blue,$green'''

'''penwidth 2'''

'''learn circle $x'''{

'''repeat 36'''{

'''forward $x'''

'''turnleft 10'''
}
}

'''go 85,85'''

'''circle 5'''

'''go 115,115'''

'''circle 5'''

'''go 145,145'''

'''circle 5'''

'''go 190,190'''

'''circle 5'''

'''go 220,220'''

'''circle 10'''

'''go 0,0'''
||
I will copy this code from text editor and paste it into KTurtle's editor.

Pause the tutorial and type the program into ypur KTurtle editor.

Resume the tutorial after typing the program.
|-
||Execute code
||I will execute this code in Fullspeed.

You can execute your code at any of the speeds specified in the Run option.

I will run this code few more times.

You can see the difference in randomly set values of pen color and canvas color.

Note the change in the color of the pen and the canvas on each execution.

You can execute the code how many ever times you want and note the change in
the randomly set values.
|-
||
||With this we come to the end of this tutorial.
Let's summarize
|-
||Summary
||In this tutorial we have learnt about,

* “learn” command and
* “random” command.
|-
||Switch to Slide 6

Switch to KTurtle Window & Show Assignment
||As an assignment for you to solve,

* Using the learn command, draw a
* pentagon
* square
* rectangle
* hexagon on the four corners of your canvas and a
* circle at the centre of the canvas.

* Using the “random” command create various colors and

* Customize your geometric shapes and canvas.
|-
||'''Slide number 11'''

'''Acknowledgement'''
||Watch the video available at this URL

'''http://spoken-tutorial.org/What is a Spoken Tutorial'''
It summarises the Spoken Tutorial project

If you do not have good bandwidth, you can download and watch it
|-
||'''Slide Number 12'''
||The Spoken Tutorial Project Team :

Conducts workshops using spoken tutorials

Gives certificates to those who pass an online test

For more details, please write to

'''contact@spoken-tutorial.org'''
|-
||'''Slide number 13'''
||Spoken Tutorial Project is a part of the Talk to a Teacher project

It is supported by the National Mission on Education through ICT, MHRD, Government of India

More information on this Mission is available at this link

'''http://spoken-tutorial.org/NMEICT-Intro ]'''

The script is contributed by IT for change, Bangaluru.

This is Madhuri Ganpathi from IIT Bombay signing off. Thank you for joining.
|-

← Older revision		Revision as of 10:12, 18 December 2013
Line 3:		Line 3:
	Author: ITfC Bangaluru		Author: ITfC Bangaluru

−	Key words:learn ~~command~~, random ~~command~~, Video tutorial.	+	Key words: learn, random, clear commands, Video tutorial.

← Older revision		Revision as of 10:11, 18 December 2013
Line 1:		Line 1:
		+	Title of the tutorial: Special-Commands-in-KTurtle
		+
		+	Author: ITfC Bangaluru
		+
		+	Key words:learn command, random command, Video tutorial.
		+
		+
	{\|border =1		{\|border =1
	!Visual Cue		!Visual Cue

@@ Line 106: / Line 106: @@
 '''learn''' space '''square''' space '''$x'''
-let's include the '''learn''' command within curly brackets
+let's include curly brackets
+{
@@ Line 121: / Line 121: @@
 |-
 || Highlight '''square''' command
-||New command that we have defined  is called '''square.'''
+||New command that we have defined  is called a '''square.'''
 '''square''' takes one input argument,  '''$x''' to set the size of the square.
@@ Line 127: / Line 127: @@
 Note that when you run this  code,''' square''' returns no output.
-The command '''learn''' is just 'learning' the other command ''' square''' to be used later.
+The command '''learn''' is just 'learning'  other command ''' square''' to be used later.
 '''square''' command can now be used like a normal command in the rest of the code.
@@ Line 168: / Line 168: @@
 ||Let's run again
-'''Turtle''' draws an another '''square''' with dimension 50.
+'''Turtle''' draws another '''square''' with dimension 50.
 Please note that this command can be used only within the scope of this program
@@ Line 199: / Line 199: @@
 |-
 ||Show code
-||I already have the code in a text editor.
+||I already have a code in a text editor.
 Let me explain the code.
@@ Line 207: / Line 207: @@
 |-
 ||Highlight  random 1,20
-||Here, the command '''random 1,20''' selects a random number which is equal or greater than 1 and equal or less than 20,
+||Here, the command '''random 1,20''' selects a number which is equal or greater than 1 and equal or less than 20,
 and assigns it to the variable x.
 |-
@@ Line 246: / Line 246: @@
 Let us execute this code a few times,
-You can see that a circle with a different size is generated each time.
+You can see that a circle with  different size is generated each time.
 Every time you execute this code, a circle with a different radius is drawn on the canvas.
@@ Line 252: / Line 252: @@
 ||
 ||
-Let us now use both the '''learn''' and '''random''' commands in an example.
+Let us now use both  '''learn''' and '''random''' commands in an example.
 |-
 ||clear current code
-||I will clear the current code and type '''clear''' command and '''Run''' to clean the canvas.
+||I will clear the current code from the editor  type '''clear''' command and '''Run''' to clean the canvas.
 |-
 ||Show code
@@ Line 285: / Line 285: @@
 to which random values between 0 and 255 are assigned randomly.
-'''pencolor  $red, $blue, $green''' the Red-Blue -Green combination values are replaced by the variables
+'''pencolor  $red, $blue and $green''' the Red-Blue -Green combination values are replaced by the variables
 '''$red''', '''$green''' and '''$blue''' to which random values were assigned
@@ Line 373: / Line 373: @@
 I will copy this code from text editor and paste it into KTurtle's editor.
-Pause the tutorial and type the program into your KTurtle editor.
+Pause the tutorial here and type the program into your KTurtle editor.
 Resume the tutorial after typing the program.
@@ Line 388: / Line 388: @@
 Note the change in the color of the pen and the canvas on each execution.
-You can execute the code how many ever times you want and note the change in
+You can execute the code how many ever times you want and note the changes in
 the randomly set values of the pen and canvas.
 |-
@@ Line 419: / Line 419: @@
 * hexagon on all four corners of your canvas and
-* circle at the centre of the canvas.
+* a circle at the centre of the canvas.
 * Using the “random” command create various colors and

@@ Line 25: / Line 25: @@
 ||To record this tutorial I am using,
-Ubuntu Linux OS version. 12.04.
+'''Ubuntu Linux''' OS version. 12.04.
-KTurtle version. 0.8.1 beta.
+'''KTurtle''' version. 0.8.1 beta.
 |-
 ||'''Slide Number 4'''
@@ Line 81: / Line 81: @@
+}
 ||
 Let's type a code in the editor to draw a square:
@@ Line 113: / Line 112: @@
+{
-let's repace 10 by $x
+let's replace '''10''' by '''$x'''
 '''forward $x'''
@@ Line 186: / Line 185: @@
 ||
-* “random” command takes input and returns output.
+* '''random''' command takes input and returns output.
 * Syntax for the random command is “random X,Y”
@@ Line 258: / Line 257: @@
 ||I will clear the current code and type '''clear''' command and '''Run''' to clean the canvas.
 |-
-||
+||Show code
 ||I already have a program in the Text editor.

@@ Line 183: / Line 183: @@
 ||
-“random” command takes input and gives output.
+* “random” command takes input and gives output.
-Syntax for the random command is “random X,Y”
+* Syntax for the random command is “random X,Y”
-where X and Y are two inputs.
+* where X and Y are two inputs.
-X sets minimum output and Y sets maximum.
+* X sets minimum output and Y sets maximum.
-Output is a randomly chosen number between X and Y.
+* Output is a randomly chosen number between X and Y.
 |-
 ||

@@ Line 396: / Line 396: @@
 Let's summarize
 |-
-||Summary
+||'''Slide Number''' 7
 ||In this tutorial we have learnt about,
@@ Line 403: / Line 405: @@
 * “random” command.
 |-
-||Switch to Slide 6
+||'''Slide Number''' 8
 Switch to KTurtle Window & Show Assignment
@@ Line 424: / Line 426: @@
 * Customize your geometric shapes and canvas.
 |-
-||'''Slide number 11'''
+||'''Slide number 9'''
 '''Acknowledgement'''
@@ Line 434: / Line 436: @@
 If you do not have good bandwidth, you can download and watch it
 |-
-||'''Slide Number 12'''
+||'''Slide Number 10'''
 ||The Spoken Tutorial Project Team :
@@ Line 445: / Line 447: @@
 '''contact@spoken-tutorial.org'''
 |-
-||'''Slide number 13'''
+||'''Slide number 11'''
 ||Spoken Tutorial Project is a part of the Talk to a Teacher project

@@ Line 3: / Line 3: @@
 !Narration
 |-
-||Slide Number 1
+||'''Slide Number 1'''
-Title slide
+'''Title slide'''
 ||
 Hello everybody.
@@ Line 66: / Line 66: @@
 |-
 ||'''Zoom text'''
-||Let me  zoom the program text to have a clear view.
+||Let me zoom the program text to have a clear view.
 |-
 ||
@@ Line 155: / Line 155: @@
 '''square 100'''
-Using the command '''square 100''' Turtle draws a square of dimension 100
+Using the command '''square 100''' Turtle draws a square of dimension 100.
 |-
 ||'''Run the code'''
 ||Let's click on Run code now
-Turtle draws a square on the canvas.
+'''Turtle''' draws a square on the canvas.
 |-
@@ Line 282: / Line 282: @@
 |-
 ||Highlight $red, $green and $blue
-||$red, $blue, $green are another set of variables
+||'''$red, $blue, $green''' are another set of variables
 to which random values between 0 and 255 are assigned randomly.
@@ Line 295: / Line 295: @@
 |-
 ||Highlight '''penwidth 2'''
-||'''penwidth 2''' sets the width of  pen to 2 pixels.
+||'''penwidth 2''' sets the width of pen to 2 pixels.
 |-
 ||code to a circle
@@ Line 381: / Line 381: @@
 ||I will execute this code in''' Fullspeed'''.
-You can execute this code at any of the speeds specified in the Run option.
+You can execute this code at any of the speeds specified in the ''' Run''' option.
 I will run this code a few times.

@@ Line 60: / Line 60: @@
 ||''' learn''' is special command  as it is used to create your own commands.
-'learn' Command you create can take input and return output.
+'learn' Command  can take input and return output.
 |-
 ||'''Zoom text'''
@@ Line 94: / Line 94: @@
 |-
 ||Highlight '''learn''' and '''square''' commands
-||Now let's learn the commands involved to draw a square, using the '''learn''' command.
+||Let's now learn the commands involved to draw a square, using the '''learn''' command.
-We will name of this set of commands to draw a square as square.
+We will name of this set of commands to draw a square as '''square'''.
 The command ''''learn'''' is followed by the name of the command to be learnt, in this case it is a '''square.'''
@@ Line 126: / Line 126: @@
 Note that when you run this  code, square returns no output.
-The command '''learn''' is just 'learning' the other command square to be used later.
+The command '''learn''' is just 'learning' the other command ''' square''' to be used later.
 '''square''' command can now be used like a normal command in the rest of the code.
@@ Line 158: / Line 158: @@
 Turtle draws a square on the canvas.
-The command square can be used any where any number of times in the program.
+The command '''square''' can be used any where any number of times in the program.
 |-
 ||Replace 100 by 50.
@@ Line 166: / Line 166: @@
 ||Let's run again
-'''Turtle''' draws an another square with dimension 50.
+'''Turtle''' draws an another '''square''' with dimension 50.
 Please note that this command can be used only within the scope of this program
@@ Line 185: / Line 185: @@
 “random” command takes input and gives output.
-Syntax for this command is “random X,Y”
+Syntax for the random command is “random X,Y”
 where X and Y are two inputs.
@@ Line 197: / Line 197: @@
 |-
 ||
-||
+||I already have the code in a text editor.
 I already have the code in a text editor.
 Let me explain the code.
@@ Line 245: / Line 244: @@
 Let us execute this code a few times,
-and you can see that a circle with a different size is generated each time.
+You can see that a circle with a different size is generated each time.
 Every time you exceute this code, a circle with a different radius is drawn on the canvas.
@@ Line 251: / Line 250: @@
 ||
 ||
-Let us now use both the learn and random commands in an example.
+Let us now use both the '''learn''' and '''random''' commands in an example.
 |-
 ||clear current code
-||I will clear the current code and '''Run''' to clean the canvas.
+||I will clear the current code and type '''clear''' command and '''Run''' to clean the canvas.
 |-
 ||
@@ Line 263: / Line 262: @@
 ||
 Highlight '''reset'''
-||“reset” command sets Turtle to its default position.
+||“reset” command sets Turtle to default position.
 |-
 ||Highlight canvassize 300,300
@@ Line 298: / Line 297: @@
 || Next I have entered the code to learn to draw a circle.
-Here $x represents the size of the circle.
+Here '''$x''' represents the size of the circle.
 The '''repeat''' command followed by the code in curly brackets draws a circle.
@@ Line 309: / Line 308: @@
 ||Example circle
 ||For example:
 “ circle 5” draws a circle of size 5
-At the co-ordinates X and Y specified in the go command.
+At the co-ordinates X and Y specified in the '''go''' command.
 For each circle, I have specified different positions on the canvas.
@@ Line 376: / Line 376: @@
 |-
 ||Execute code
-||I will execute this  code in Fullspeed.
+||I will execute this code in Fullspeed.
-You can execute your code at any of the speeds specified in the Run option.
+You can execute this code at any of the speeds specified in the Run option.
-I will run this code few more times.
+I will run this code few  times.
 You can see the difference in randomly set values of pen color and canvas color.
@@ Line 397: / Line 397: @@
 * “learn” command  and
 * “random” command.
 |-
@@ Line 405: / Line 406: @@
 * Using the learn command, draw a
 * pentagon
 * square
 * rectangle
-* hexagon on the four corners of your canvas and a
 * circle at the centre of the canvas.
@@ Line 445: / Line 451: @@
 '''http://spoken-tutorial.org/NMEICT-Intro ]'''
-The script is contributed by IT for change, Bangaluru.
+The script is contributed by '''IT for change, Bangaluru.'''
-This is Madhuri Ganpathi from IIT Bombay signing off. Thank you for joining.
+This is Madhuri Ganpathi from '''IIT Bombay''' signing off. Thank you for joining.
 |-