Slides for the 2nd week of an introductory Processing course at the V&A

1. Week 2: Fundamentals of Programming Variables, Arrays, For Loops, If Statements

2. int centerX = 320; variables

3. variables

4. variables

5. variables do not change can change

6. variables

7. a short break: println and detecting the mouse println ( mouseX + “” + mouseY );

8. a short break: width and height ellipse ( width /2, height /2,100,100);

9. arrays int [] centerX = new int [10];

10. int [] centerX = { 0,0,1,1,2,2,3,3,4,4 }; arrays

11. int [] centerX = new int [10]; arrays centerX[0]=0; centerX[1]=0; centerX[2]=1; centerX[3]=2; …and so on void setup (){

12. int [] centerX = new int [10]; arrays… and for loops for ( int i = 0; i < 10; i++){ centerX[i] = i/2; } void setup (){ }

13. for loops void setup (){ blahblahblah(); } void draw (){ blahblah(); for ( int i = 0; i < 20; i++){ blahblahblah(); blah[i] = blah[i] +1; } blahblah(); }

14. if… else if ( mousePressed == true ){ do something; } else if ( keyPressed == true ){ do something else; } else { do something else; }

15. if… else if (centerX < width /2){ do something; } else if (centerX >= 3* width /4){ do something else; } else { do something else; }