Week 2: Fundamentals of Programming

Variables, Arrays, For Loops, If Statements

int centerX = 320;

variables

variables

variables

variables

do not change

can change

variables

a short break: println and detecting the mouse

println(mouseX + “\t” + mouseY);

a short break: width and height

ellipse(width/2, height/2,100,100);

arrays

int[] centerX = new int[10];

int[] centerX = {0,0,1,1,2,2,3,3,4,4

};

arrays

int[] centerX = new int[10];

arrays

centerX[0]=0;centerX[1]=0;centerX[2]=1;centerX[3]=2; …and so on

void setup(){

int[] centerX = new int[10];

arrays… and for loops

for (int i = 0; i < 10; i++){centerX[i] = i/2;

}

void setup(){

}

for loops

void setup(){ blahblahblah();}

void draw(){ blahblah(); for (int i = 0; i < 20; i++){

blahblahblah();blah[i] = blah[i] +1;

} blahblah();}

if… else

if (mousePressed == true){do something;

}else if (keyPressed == true){

do something else;}else {

do something else;}

if… else

if (centerX < width/2){do something;

}else if (centerX >= 3*width/4){

do something else;}else {

do something else;}