week02 缺一角

// week02_1_pacman_radians_mouseX

可以用滑鼠來控制大小

void setup() {

  size(400, 400);

}

void draw() {

  background(255);

  fill(#FFDC0F); //填充黃色

  float a = radians(mouseX);

  for (int x=0; x<400; x+=100) {

    for (int y=0; y<400; y+=100) {

      arc(x+50, y+50, 100, 100, 0 + a, PI*2 - a, PIE);//改畫弧度

      //X座標, Y,  寬,  高,  開始,   結束, 蘋果派的方法畫

    }

  }

} 

// week02_2_pacman_radians_frameCount     

  想要照著時間,自動張嘴

void setup(){

  size(400, 400);

}

void draw(){

  background(255);

  fill(#FFDC0F);

  float a = radians(frameCount);

  if(a>PI/4) a = a - PI/4;

  arc(200, 200, 300, 300, 0+a, PI*2-a, PIE);

  

}

// week02_3_pacman_open_close_open_close

他會在特定角度開開合合

void setup(){

  size(400, 400);

}

void draw(){

  background(255);

  fill(#FFDC0F);

  float a = frameCount % 180; //0..45..90..180

  if(a<45) a = radians(a);

  else if(a<90) a = radians(90-a);

  else if(a<135) a = radians(a-90);

  else if(a<180) a = radians(180-a);

  arc(200, 200, 300, 300, 0+a, PI*2-a, PIE);

}

// week02_4_pacman_for_for_open_close_open_close

void setup() {

  size(400, 400);

}

void draw() {

  background(255);

  fill(#FFDC0F); //填充黃色

  //float a = radians(mouseX);

  for (int x=0; x<400; x+=100) {

    for (int y=0; y<400; y+=100) {

      float a = frameCount % 180; //0..45..90..180

      if (a<45) a = radians(a);

      else if (a<90) a = radians(90-a);

      else if (a<135) a = radians(a-90);

      else if (a<180) a = radians(180-a);

      arc(x+50, y+50, 100, 100, 0 + a, PI*2 - a, PIE);//改畫弧度

      //X座標, Y,  寬,  高,  開始,   結束, 蘋果派的方法畫

    }

  }

}

// week02_5_pacman_if_keyPressed_keyCode

可以透過鍵盤上下左右來控制圓點

void setup(){

  size(400, 400);

}

int x = 200, y = 200; //pacman座標

void draw(){

  background(255);

  fill(#FFDC0F);

  if(keyPressed && keyCode==RIGHT) x++;

  if(keyPressed && keyCode==LEFT) x--;

  if(keyPressed && keyCode==UP) y--;

  if(keyPressed && keyCode==DOWN) y++;

  ellipse(x, y, 100, 100);

}

// week02_6_pacman_b_direction from week_02_3

可以透過滑鼠來滑動缺角的方向

void setup(){

  size(400, 400);

}

void draw(){

  background(255);

  fill(#FFDC0F);

  float a = frameCount % 180; //0..45..90..180

  float b = radians(mouseX);

  if(a<45) a = radians(a);

  else if(a<90) a = radians(90-a);

  else if(a<135) a = radians(a-90);

  else if(a<180) a = radians(180-a);

  arc(200, 200, 300, 300, b+0+a, b+PI*2-a, PIE);

}

// week02_7_pacman_d_direction_void_keyPressed_keyCode

透過鍵盤上下左右來改變缺角方向 且缺角會開開合合

void setup() {

  size(400, 400);

}

float x = 200, y = 200, d=PI/2*0;

void draw() {

  background(255);

  fill(#FFDC0F);

  float a = frameCount % 180;

  if (a<45) a = radians(a);

  else if (a<90) a = radians(90-a);

  else if (a<135) a = radians(a-90);

  else if (a<180) a = radians(180-a);

  arc(x, y, 100, 100, d+0+a, d+PI*2-a, PIE);

}

void keyPressed(){

  if(keyCode==RIGHT){

    x++;

    d = PI/2*0;

  }else if(keyCode==DOWN){

    y++;

    d = PI/2*1;

  }else if(keyCode==LEFT){

    x--;

    d = PI/2*2;

  }else if(keyCode==UP){

    y--;

    d = PI/2*3;

  }

}

// week02_8_pacman_dx_dy_d_void_keyPressed

在缺角移動的同時 可利用鍵盤來控制其缺角防止他跑出視窗

void setup(){

  size(400, 400);

}

int x = 200, y = 200, d = 0;

void draw(){

  background(255);

  fill(#FFDC0F);

  float a = 0.5;

  int [] dx = {1, 0, -1, 0};

  int [] dy = {0, 1, 0, -1};

  x += dx[d];

  y += dy[d];

  arc(x, y, 100, 100, PI/2*d+a, PI/2*d + PI*2 - a, PIE);

}

void keyPressed(){

  if(keyCode==RIGHT) d = 0;

  if(keyCode==DOWN) d = 1;

  if(keyCode==LEFT) d = 2;

  if(keyCode==UP) d = 3;

}

// week02_9_pacman_radians_abs_frameCount_if_keyPressed

除了可以利用鍵盤上下左右來控制方向 也能同時用空白鍵讓缺角持續前進

void setup(){

  size(400, 400);

}

int x = 200, y = 200, d = 0;

void draw(){

  background(255);

  fill(#FFDC0F);

  float a = radians(abs(frameCount%90-45));

  int [] dx = {1, 0, -1, 0};

  int [] dy = {0, 1, 0, -1};

  if(keyPressed) x += dx[d];

  if(keyPressed) y += dy[d];

  arc(x, y, 100, 100, PI/2*d+a, PI/2*d + PI*2 - a, PIE);

}

void keyPressed(){

  if(keyCode==RIGHT) d = 0;

  if(keyCode==DOWN) d = 1;

  if(keyCode==LEFT) d = 2;

  if(keyCode==UP) d = 3;

}