Processing=007=simplearraylist

Processing

07 ArrayList & Class

Array

0

1

2 5 3 4

6 Array

Declare Array

Function bag name Open bag

Things that side the bag

Close bag

int[]x = { 200,100,300,500 }; this is an array called “x� and there are all integers inside of it.

void setup(){ size(500,500); smooth(); } void draw(){ background(0); int [] x1 = {200,400,300}; int [] y1 = {300,400,200}; ellipse(x1[0], y1[0], 200, 200); ellipse(x1[1], y1[1], 100, 100); ellipse(x1[2], y1[2], 50, 50); }

x1[0]=200, x1[1]=400, x1[2]=300 y1[0]=300, y1[1]=400, x1[2]=200

Conceptually talking about

ArrayList

ArrayList

Putting more Balls in the bag

And still, we can pick up the ball

ArrayList

Conceptually talking about

CLASS

Class

Structure Data

Function

OBJECT white

Color Legs (Long or Short)

DOG

RUN();

ears (Long or Short)

BARK();

Length (Long or Short)

JUMP();

blacky

Weight (heavy, light) spot

name

class dog{

open

//declare global variables int legs,color,size; //input value dog( int _legs, int _color, int _size){ legs = _legs; color = _color; size = _size; }

//function of the class(what this class can do) void run(){ run as a dog; }

}

close

Basic Setup

Set up the “ArrayList”, first

ArrayList pointList; void setup(){ size(500,500); smooth(); pointList = new ArrayList(); }

Set up the “Class” class Pts{ float x; float y; float z; float r;

The parameters you are going to use

Pts(float _x, float _y, float _z, float _r){ x = _x; y = _y; z = _z; r = _r; }

Basic Elements

void display(){ fill(random(255), random(255), random(255)) ellipse(x, y, r, r); }

Functions

}

Basic Setup

ArrayList pointList;

class Pts{

void setup(){ size(500,500); smooth(); pointList = new ArrayList(); }

float x; float y; float z; float r;

void draw(){ float x = random(width); float y = random(height); float z = 0; float r = random(200);

These refer to the class

Pts(float _x, float _y, float _z, float _r){ x = _x; y = _y; z = _z; r = _r; } void display(){ fill(random(255), random(255), random(255)); ellipse(x, y, r, r); }

Pts nPt = new Pts(x,y,z,r); } Make an Object

Making Object

}

NOTHING HAPPENS ???!!!

ArrayList pointList;

class Pts{

void setup(){ size(500,500); smooth(); pointList = new ArrayList(); }

float x; float y; float z; float r; Pts(float _x, float _y, float _z, float _r){ x = _x; y = _y; z = _z; r = _r; }

void draw(){ float x = random(width); float y = random(height); float z = 0; float r = random(200);

void display(){ fill(random(255), random(255), random(255)); ellipse(x, y, r, r); }

Pts nPt = new Pts(x,y,z,r); Pts.display(); } Don’t forget to “DISPLAY”

Making Object

}

ArrayList pointList;

class Pts{

void setup(){ size(500,500); smooth(); pointList = new ArrayList(); }

float x; float y; float z; float r;

Pts(float _x, float _y, float _z, float _r){ x = _x; y = _y; z = _z; r = _r; }

void draw(){

} void mousePressed(){ Pts n = new Pts (mouseX, mouseY, 0, random(20,200)); n.display pointList.add(n); }

There is nothing happen again, because we didn’t display them LET’s DISPLAY them in ”draw”

Use Mouse to put them into ArrayList

void display(){ fill(random(255), random(255), random(255)); ellipse(x, y, r, r); } }

ArrayList pointList;

class Pts{

void setup(){ size(500,500); smooth(); pointList = new ArrayList(); }

float x; float y; float z; float r; Pts(float _x, float _y, float _z, float _r){ x = _x; y = _y; z = _z; r = _r; }

void draw(){ stroke(255); for(int i=1; i<pointList.size();i++){ Pts PtO = (Pts)pointList.get(i-1); Pts PtN = (Pts)pointList.get(i); line(PtO.x,PtO.y,PtN.x,PtN.y); } }

Draw Line between void mousePressed(){ Pts n = new Pts (mouseX, mouseY, 0, random(20,200)); n.display(); pointList.add(n); }

void display(){ fill(255); ellipse(x, y, r, r); } }