Chapter 2 - Turtle Art

Q 1 - What is Turtle Art?

Ans - Turtle art is a software that is inspired by Logo Programming Language. It helps us in better understanding of geometrical shapes.

Q 2 - Write various commands of Logo/Turtle art.

Ans - Commands of Logo are :-

Movement Commands

These commands move the logo.

1) Forward :- This command moves the logo in the direction it is facing.

FD <length>

length will be in pixels

Example

FD 100

FD 50

2) Backward :- This command moves the logo in the backward direction logo is facing.

BK <length>

Example

BK 100

BK 50

Turn Commands

1) Right Turn :- turns the logo in right direction with the angle provided.

RT <angle>

Example

RT 90

2) Left Turn :- turns the logo in left direction with the angle provided.

LT <angle>

Example

LT 90

Pen related Commands

1) Setpensize :- sets the size of the line logo draws

SETPENSIZE <width>

Example

SETPENSIZE 5

2) PENUP :- after this command logo wont draw anything in the canvas. It will still move but wont draw any line.

3) PENDOWN :- after this command logo will again be able to draw line in its path.

Visibility Commands

1) HT :-Hide Turtle, This command hides the Turtle/Logo

2) ST :- Show Turtle, This command shows the Turtle/Logo again.

Repeat command

It helps to repeat set of repetitive command by giving number of repetition of loops.

REPEAT <Loop_Number> [ <Command> ]

Example

REPEAT 4 [ FD 100 RT 90 ] will draw a square of side 100.

Q - 3 What is the difference between Turtle Art and FMSLogo?

Ans - Following are the difference between Turtle Art and FMSLogo:-

1. In Turtle Art we use Blocks while in FMSLogo we have to write logo commands.

2. In Turtle Art we use mouse to Drag and Drop Blocks while in FMSLogo we use keyboard to write commands.

3. We can attach multiple Blocks to each other and run/execute in one go but in FMSLogo we have to run/execute one by one.

4. In turtle art there is Turtle icon while there is small triangle in FMSLogo.

5. We can create our own Blocks in Turtle Art but this is not possible in FMSLogo.