周家契約12號

 官網document->library->sound
之前教過play() stop() pause()
可以在官網找範例
但比較爛，老師的比較好
//week12_01_libraries
import processing.sound.*;
SoundFile sound1, sound2;
int playing = 1;
void setup(){
  size(640,360);
  background(255);
  sound1 = new SoundFile(this, "Intro Song_Final.mp3");
  sound2 = new SoundFile(this, "In Game Music.mp3");
}
void draw(){
  if(sound1.isPlaying()){//音樂1有沒有在撥放
    playing = 1;
  }else if(sound2.isPlaying()){//音樂2有沒有在撥放
    playing = 2;
  }else{
    if(playing==1) sound2.play();//換另外一首
    else sound1.play();
  }
}

畫出曲線

對bezier()按右鍵就能看

//week12-02_beizier_sample
//按右鍵，找bezier()函式的網站文件
size(500,500);
noFill();
stroke(255,102,0);
line(340,80,40,40);
line(360,360,60,320);
stroke(0,0,0);
bezier(340, 80, 40, 40, 360, 360, 60, 320);

用上一個公式
把球加上去
再用1 3 3 1

//week12-03_bezier_1_3_3_1_equation_mousedragged_change_t
void setup(){
  size(500,500);
}
PVector p0 = new PVector(340,80);
PVector p1 = new PVector(40,40);
PVector p2 = new PVector(360,360);
PVector p3 = new PVector(60,320);
float t = 0.0;
void draw(){ 
  background(255);
  noFill();
  stroke(255,102,0);
  line(340,80,40,40);
  line(360,360,60,320);
  stroke(0,0,0);
  bezier(340, 80, 40, 40, 360, 360, 60, 320);
  float x = p0.x*(1-t)*(1-t)*(1-t)+3*p1.x*t*(1-t)*(1-t)+3*p2.x*t*t*(1-t)+p3.x*t*t*t;
  float y = p0.y*(1-t)*(1-t)*(1-t)+3*p1.y*t*(1-t)*(1-t)+3*p2.y*t*t*(1-t)+p3.y*t*t*t;
  ellipse(x,y,10,10);
}
void mouseDragged(){
  t+=0.01*(mouseX-pmouseX);
}










改曲線的樣子
用迴圈畫很多小圈

//week12-04_bezier_for_t_t0_0_many_t
void setup(){
  size(400,400);
}
PVector p0 = new PVector(120,80);
PVector p1 = new PVector(320,20);
PVector p2 = new PVector(320,300);
PVector p3 = new PVector(120,300);
float t0 = 0.0;
void draw(){ 
  background(255);
  noFill();
  stroke(255,102,0);
  line(340,80,40,40);
  line(360,360,60,320);
  stroke(0,0,0);
  bezier(120, 80, 320, 20, 320, 300, 120, 300);
    for(float t = t0; t>=0; t-=0.02){
    float x = p0.x*(1-t)*(1-t)*(1-t)+3*p1.x*t*(1-t)*(1-t)+3*p2.x*t*t*(1-t)+p3.x*t*t*t;
    float y = p0.y*(1-t)*(1-t)*(1-t)+3*p1.y*t*(1-t)*(1-t)+3*p2.y*t*t*(1-t)+p3.y*t*t*t;
    ellipse(x,y,10,10);
  }
}
void mouseDragged(){
  t0+=0.01*(mouseX-pmouseX);
}

複習上禮拜的物件導向

//week12-05_bezier_ArrayList_class_Ball_draw_ArrayList_add
void setup() {
  size(400, 400);
}
PVector p0 = new PVector(120, 80);
PVector p1 = new PVector(320, 20);
PVector p2 = new PVector(320, 300);
PVector p3 = new PVector(120, 300);
float t0 = 0.0;
ArrayList<Ball> balls = new ArrayList<Ball>();
void draw() {
  background(255);
  noFill();
  stroke(255, 102, 0);
  line(340, 80, 40, 40);
  line(360, 360, 60, 320);
  stroke(0, 0, 0);
  bezier(120, 80, 320, 20, 320, 300, 120, 300);
  for(Ball ball : balls){
    ball.draw();
  }
  if(frameCount%20==0)  balls.add(new Ball(p0,p1,p2,p3));
  /*for (float t = t0; t>=0; t-=0.02) {
    float x = p0.x*(1-t)*(1-t)*(1-t)+3*p1.x*t*(1-t)*(1-t)+3*p2.x*t*t*(1-t)+p3.x*t*t*t;
    float y = p0.y*(1-t)*(1-t)*(1-t)+3*p1.y*t*(1-t)*(1-t)+3*p2.y*t*t*(1-t)+p3.y*t*t*t;
    ellipse(x, y, 10, 10);
  }*/
}
void mouseDragged() {
  t0+=0.01*(mouseX-pmouseX);
}
class Ball{
  PVector p0, p1, p2, p3;
  float t=0.0;
  Ball(PVector _p0, PVector _p1, PVector _p2, PVector _p3){
    p0 = _p0;
    p1 = _p1;
    p2 = _p2;
    p3 = _p3;
  }
  void draw(){
    float x = p0.x*(1-t)*(1-t)*(1-t)+3*p1.x*t*(1-t)*(1-t)+3*p2.x*t*t*(1-t)+p3.x*t*t*t;
    float y = p0.y*(1-t)*(1-t)*(1-t)+3*p1.y*t*(1-t)*(1-t)+3*p2.y*t*t*(1-t)+p3.y*t*t*t;
    ellipse(x, y, 10, 10);
    t += 0.001;
  }
}

加入REMOVE()函式把多出來的球刪掉

以免佔用記憶體

//week12-06_bezier_ArrayList_balls_size_get_remove
void setup() {
  size(400, 400);
}
PVector p0 = new PVector(120, 80);
PVector p1 = new PVector(320, 20);
PVector p2 = new PVector(320, 300);
PVector p3 = new PVector(120, 300);
float t0 = 0.0;
ArrayList<Ball> balls = new ArrayList<Ball>();
void draw() {
  background(255);
  noFill();
  stroke(255, 102, 0);
  line(340, 80, 40, 40);
  line(360, 360, 60, 320);
  stroke(0, 0, 0);
  bezier(120, 80, 320, 20, 320, 300, 120, 300);
  for(Ball ball : balls){
    ball.draw();
  }
  if(frameCount%20==0){
    balls.add(new Ball(p0,p1,p2,p3));
    println(balls.size());
  }
  if(balls.size()>0 && balls.get(0).t>1.0)  balls.remove(0);
}
void mouseDragged() {
  t0+=0.01*(mouseX-pmouseX);
}
class Ball{
  PVector p0, p1, p2, p3;
  float t=0.0;
  Ball(PVector _p0, PVector _p1, PVector _p2, PVector _p3){
    p0 = _p0;
    p1 = _p1;
    p2 = _p2;
    p3 = _p3;
  }
  void draw(){
    float x = p0.x*(1-t)*(1-t)*(1-t)+3*p1.x*t*(1-t)*(1-t)+3*p2.x*t*t*(1-t)+p3.x*t*t*t;
    float y = p0.y*(1-t)*(1-t)*(1-t)+3*p1.y*t*(1-t)*(1-t)+3*p2.y*t*t*(1-t)+p3.y*t*t*t;
    ellipse(x, y, 10, 10);
    t += 0.001;
  }
}