Programming Class

1. Programming Class Logo Programming Fall 2011 – Session 7 Teacher: M. Taghizadeh Sobhan Highschool

2. Pen Up, Pen Down So far, all of our drawings have had two limitations. First, they are entirely made up of lines (no solid shapes). Second, all of the lines are connected. In this lesson, we will overcome these limitations. We will learn how to move the turtle without drawing a line. We will also learn how to fill in the outline of a shape with a solid color.

3. Pen Up, Pen Down • PU PEN UP • PD PEN DOWN

4. Pen Up, Pen Down Draw a dashed line

5. Pen Up, Pen Down Draw a dashed line • REPEAT 10 [ • FD 5 • PU • FD 5 • PD • ]

6. Pen Up, Pen Down Draw a dashed line in function 1 • To dash :length • REPEAT :length/10 [ • FD 5 PU FD 5 PD • ] • End • Dash 300

7. Pen Up, Pen Down Draw a dashed line in function 2 • To dash :length :size • REPEAT int(:length/(:size*2)) [ • FD :size PU FD :size PD • ] • End • Dash 300 8

8. Pen Up, Pen Down INT Function • Repeat 10 [ ... ] • Repeat 20 [ ... ] • Repeat 17 [ ... ] • Repeat integer [ ... ]

9. Pen Up, Pen Down INT Function • Int ( number ) integer of number • Int (17.7) 17 • Int (13.33333) 13 • Int (758.254) 758

10. Pen Up, Pen Down Draw a dashed line in function 3 • To dash :length :size1 :size2 • REPEAT int(:length/(:size1+:size2)) [ • FD :size1 PU FD :size2 PD • ] • End • Dash 300 5 10

11. Pen Up, Pen Down Draw a dashed rectangle • To dash :length :size • REPEAT int(:length/:size*2) [ • FD :size PU FD :size PD • ] • End • repeat 4 [dash 300 10 rt 90]

12. Pen Up, Pen Down Draw a series of rectangles 50 10

13. Pen Up, Pen Down Draw a series of rectangles • TO SQUARE :LENGTH • REPEAT 4 [ FD :LENGTH RT 90 ] • END • To rect_series • repeat 5 [ • square 50 • pu • rt 90 fd 60 lt 90 • pd • ] • end

14. Pen Up, Pen Down Draw a series of circles 50 10

15. Pen Up, Pen Down Draw a series of circles • To circles_series • repeat 5 [ • circle 50 • pu • rt 90 fd 110 lt 90 • pd • ] • end

16. Pen Up, Pen Down Draw a series of rectangles 60 100

17. Pen Up, Pen Down Draw a series of rectangles

18. Pen Up, Pen Down Draw a series of circles

19. Pen Up, Pen Down Draw a series of circles

20. Pen Up, Pen Down Draw a series of 6-edges HIVE

21. Procedure Saving Drawings • Bitmap • Save As

22. Procedure Change Pen Color, Pen Size, Color Screen • Set • Pen Size • Pen Color • Screen Color

23. The End Logo Programming Fall 2011 – Session 7 Teacher: M. Taghizadeh Sobhan Highschool