// 6.914 HW1 #1

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

void draw(){
  // specifying diameter of circle
  ellipse(100, 100, 50, 50);
}

void mousePressed(){
  // must be no more than radius away from center of circle
  if (dist(mouseX, mouseY, 100, 100)<25){
    println("Congratulations!");
  }
}


// 6.914 HW1 #2

// create beziers - basically open-ended.



// 6.914 HW1 #3

boolean goingDown = true;
boolean goFastUp = true;
int upInterval, downInterval, circleRad = 10;
float yPos = circleRad;

void setup(){
  size(200, 400);
}

void draw(){
  background(255);
  
  // setting speed based on whether we're going up fast
  if (goFastUp){
    upInterval = 2; downInterval = 1;
  } else {
    upInterval = 1; downInterval = 2;
  }
  
  // setting change in position based on going up vs. down
  if (goingDown){
   yPos += downInterval;
  } else {
   yPos -= upInterval;
  }
 
 // if we've reached the edge, turn around
 if ((yPos < circleRad) || (yPos > height-circleRad)){
   goingDown = !goingDown; // switch directions
 } 
 
 // draw the circle
 ellipse (width/2, yPos, circleRad*2, circleRad*2);
 
}

void keyPressed(){
  if (key == 'S' || key == 's'){
    // switch modes
    goFastUp = !goFastUp;
  }
}



// 6.914 HW1 #4

// picked 100 as an arbitrary background red level for the window
float winRed = 100, winGreen, winBlue;
void setup(){
  size(255, 255);
}

void draw(){
  winGreen = mouseX;
  winBlue = mouseY;
  background(winRed, winGreen, winBlue);
  
  // if color is (x, y, z), the inverse is (255-x, 255-y, 255-z)
  fill(255 - winRed, 255 - winGreen, 255 - winBlue);
  ellipse(120, 120, 50, 50);
  
}
  


// 6.914 HW1 #5

void setup(){
  size(400, 400);
  background(255);
}

void draw(){
  // strokeWeight does not depend on mousePressed or not
  strokeWeight(abs((mouseX+mouseY)%20));
  line(pmouseX, pmouseY, mouseX, mouseY);
}


// just one possible set of functions
void mouseMoved(){
  stroke(mouseX*2, mouseY*2, mouseX/max(mouseY,1));
}

// inverse of the color in mouseMoved
void mouseDragged(){
  stroke(255-mouseX/2, 255-mouseY*2, 255-mouseX/max(mouseY, 1));
}



// 6.914 HW1 #6


int counter1=0, counter2 = 0, counter3 = 0, counter4 = 0;
int colorsToTurn=5;

void setup(){
  size(400, 400);
}

void draw(){
  if (counter1>0 || counter2>0 || counter3>0 || counter4>0){
    fill(random(255), random(255), random(255));
    delay(100);
  }
  if (counter1 > 0){
    rect(0, 0, width/2, height/2);
    counter1--;
  }
  else if (counter2 > 0){
    rect(width/2, 0, width/2, height/2);
    counter2--;
  }
  else if (counter3 > 0){
    rect(0, height/2, width/2, height/2);
    counter3--;
  }
  else if (counter4 > 0){
    rect(width/2, height/2, width/2, height/2);
    counter4--;
  }
}

void mousePressed(){
  if (counter1 == 0 && counter2 == 0 && counter3 == 0 && counter4 == 0){
    if (mouseX < width/2 && mouseY < height/2)
      counter1+=colorsToTurn;
    else if (mouseX > width/2 && mouseY < height/2)  
      counter2 += colorsToTurn;
    else if (mouseX < width/2 && mouseY > height/2)  
      counter3 += colorsToTurn;
    else if (mouseX > width/2 && mouseY > height/2)  
      counter4 += colorsToTurn;
  }
}