Java I

Jonah Warren
jonah@parsons.edu
http://a.parsons.edu/~java2004

Lab 7


Code from class...

SIN FUNCTION CONTROL YPOSITION 

float counter;

void setup()
{
}

void loop()
{
  background(255);
  counter+=0.1;
  println(sin(counter));
  rectMode(CENTER_DIAMETER);
  rect(50, sin(counter)*50+50, 5, 5);
}

SIN AND COS FUNCTION CONTROL POSITION 

float counter;

void setup()
{
}

void loop()
{
  background(255);
  counter+=0.1;
  println(sin(counter));
  rectMode(CENTER_DIAMETER);
  rect(cos(counter)*50+50, sin(counter)*50+50, 5, 5);
}

SIN FOR STROBEBLOCK 

strobeBlock sBlock;

void setup() {
  size(200, 200);
  sBlock = new strobeBlock(75,75,10);
}

void loop() {
  background(255);

  sBlock.update();
  sBlock.draw();
}

class strobeBlock {

  float xPos;
  float yPos;
  float speed;
  float col;
  float counter;

  strobeBlock(float xp, float yp, float sp) {
    xPos = xp;
    yPos = yp;
    speed = sp;
    col = 0;
    counter=0;
  }

  void draw() {
    noStroke();
    fill(col);
    rect(xPos, yPos, 50, 50);
  }

  void update() {
    float osc;

    counter += 0.01;
    osc = (sin(counter))+1;
    osc = osc / 2;

    col = osc * 255;
  }

}

DRAWING TOOL... CONNECT THE DOTS 

float prevX;
float prevY;

void setup() {
  size(200, 200);
  background(255);
}

void loop() {
  noFill();
  rect(0,0,width-1,height-1);

  if (mousePressed) {
    if (prevX != 0) {
      line(prevX, prevY, mouseX, mouseY);
    }

    prevX = mouseX;
    prevY = mouseY;
  }
}

DRAWING TOOL... FUNNY RECTS 

float prevX;
float prevY;

void setup() {
  size(200, 200);
  background(255);
}

void loop() {
  noFill();
  rect(0,0,width-1,height-1);

  if (mousePressed) {
    if (prevX != 0) {
      rect(prevX, prevY, abs(prevX-mouseX), abs(prevY-mouseY));
    }

    prevX = mouseX;
    prevY = mouseY;
  }
}

DRAWING TOOL... BARBED WIRE 

float prevX;
float prevY;

void setup() {
  size(200, 200);
  background(255);
}

void loop() {
  float rand1 = random(10);
  float rand2 = random(10);

  noFill();
  rect(0,0,width-1,height-1);

  if (mousePressed) {
    if (prevX != 0) {
      line(prevX, prevY, mouseX + rand1, mouseY + rand2);
    }

    prevX = mouseX + rand1;
    prevY = mouseY + rand2;
  }
}

DRAWING TOOL... CURLIES 

float prevX;
float prevY;
float counter;

void setup()
{
  size(300,300);
  background(255);
}

void loop()
{
  noFill();
  rect(0,0,width-1,height-1);

  if (mousePressed) {
    counter+=0.8;

    if (prevX != 0) {
      line(prevX, prevY, cos(counter)*10 + mouseX, sin(counter)*10 + mouseY);

    }
    prevX=cos(counter)*10 + mouseX;
    prevY=sin(counter)*10 + mouseY;
  }
}

DRAWING TOOL... ADDING VALUES TO AN ARRAY 

float [] mousePtsX;
float [] mousePtsY;
int counter;

void setup(){
  size(300,300);
  mousePtsX = new float[100];
  mousePtsY = new float[100];
  counter = 0;
  background(255);
}

void loop(){
  noFill();
  rect(0,0,width-1,height-1);

  // drawing the line
  for (int i = 0; i < counter-1; i++){
    line(mousePtsX[i], mousePtsY[i], mousePtsX[i+1], mousePtsY[i+1]);
  }

  if(mousePressed) {
    if (counter < 100){
      mousePtsX[counter] = mouseX;
      mousePtsY[counter] = mouseY;
      counter++;
    }
  }

}

DRAWING TOOL... CONTINUALLY MULTIPLYING ARRAY VALUES 

float [] mousePtsX;
float [] mousePtsY;
int counter;

void setup(){
  size(300,300);
  mousePtsX = new float[1000];
  mousePtsY = new float[1000];
  counter = 0;
  background(255);
}

void loop(){
  background(255);
  noFill();
  rect(0,0,width-1,height-1);

  // drawing the line
  for (int i = 0; i < counter-1; i++){
    line(mousePtsX[i], mousePtsY[i], mousePtsX[i+1], mousePtsY[i+1]);
  }

  if(mousePressed) {
    if (counter < 1000){
      mousePtsX[counter] = mouseX;
      mousePtsY[counter] = mouseY;
      counter++;
    }

    for (int i = 0; i < counter-1; i++){
      mousePtsX[i] = mousePtsX[i]*1.001;
      mousePtsY[i] = mousePtsY[i]*1.001;
      mousePtsX[i+1] = mousePtsX[i+1]*1.001;
      mousePtsY[i+1] = mousePtsY[i+1]*1.001;
    }

  }

}

3D ROTATION... USING PUSH AND POP 

float counter;

void setup()
{
  size(200,200);
}

void loop()
{
  background(255);
  counter+=0.01;

  fill(155,155,0);
  push();
  translate(100,100,0);
  rotateZ(counter);
  translate(50,0,0);
  box(20,20,20);
  pop();

  fill(200,155,0);
  push();
  translate(100,100,0);
  rotateY(counter);
  translate(50,0,0);
  box(20,20,20);
  pop();

}

IMAGE MANIPULATION... PIXELIZATION 

color[][] output = new color[100][100];
int gridWidth;
int numGrid;

void setup() {
  size(250,250);
  background(0);
  gridWidth = 50;
  numGrid = 200/gridWidth;
}

void loop() {
  BImage b;
  b = loadImage("utah.jpg");
  image(b, 25, 25);

  for(int x=0;x<gridWidth;x++) {
    for(int y=0;y<gridWidth;y++) {
      output[x][y] = get(x*numGrid+25,y*numGrid+25);
    }
  }

  for(int x=0;x<gridWidth;x++) {
    for(int y=0;y<gridWidth;y++) {
      fill(output[x][y]);
      rect(25+x*numGrid,25+y*numGrid,numGrid,numGrid);
    }
  }

}

Homework 7

(Please email me if you have any questions or problems)