week07-畫三角形

week07

*用點畫出圓*

程式碼:
size(500,500);
for(int angle=0;angle<360;angle+=30){
  float angle2 = radians(angle);
  float x = 100+cos(angle2)*50;
  float y = 100+sin(angle2)*50;
  ellipse(x,y,2,2);
} 

*利用三角函數畫三角形*

程式碼:

size(500,500);

beginShape();

for(int angle=0;angle<360;angle+=120){

  float angle2 = radians(angle);

  float x = 100+cos(angle2)*50;

  float y = 100+sin(angle2)*50;

  vertex(x,y);

}

endShape(CLOSE);

*滑鼠旋轉滑鼠，三角形跟著轉*

程式碼:

void setup(){

  size(500,500);

}

void draw(){

  //background(255);//清畫面

  beginShape();

  for(int angle=0;angle<360;angle+=120){

    float angle2 = radians(angle+mouseX);

    float x = 100+cos(angle2)*50;

    float y = 100+sin(angle2)*50;

    vertex(x,y);

  }

  endShape(CLOSE);

}

*三角形跟著滑鼠移動*

程式碼:

void setup(){

  size(500,500);

}

void draw(){

  ///background(255);//清畫面

  beginShape();

  for(int angle=0;angle<360;angle+=120){

    float angle2 = radians(angle+mouseX);

    float x = mouseX+cos(angle2)*50;

    float y = mouseY+sin(angle2)*50;

    vertex(x,y);

  }

  endShape(CLOSE);

}

*三角形會自己旋轉，滑鼠可以移動它*

*1sec = 60frame

程式碼:

void setup(){

  size(500,500);

}

void draw(){

  ///background(255);//清畫面

  beginShape();

  for(int angle=0;angle<360;angle+=120){

    float angle2 = radians(angle+frameCount);

    float x = mouseX+cos(angle2)*100;

    float y = mouseY+sin(angle2)*100;

    vertex(x,y);

  }

  endShape(CLOSE);

}

*接水果遊戲*

程式碼:

float [] fruitX=new float[10];

float [] fruitY=new float[10];

float kidX=150,kidY=450;

int score=0;

void setup(){

  size(500,500);

  for(int i=0;i<10;i++){

    fruitX[i] = random(50,450);

    fruitY[i] = -i*100;

   }

}

void draw(){

  background(255);

  rect(kidX,kidY,80,80);

  kidX=mouseX;

  for(int i=0;i<10;i++){

    ellipse(fruitX[i],fruitY[i],60,80);

    fruitY[i]++;

    if(fruitY[i]>kidY){///水果掉夠低

      if(kidX<fruitX[i] && fruitX[i]<kidX+80){///接到水果

        score+=10;///接住了就加分

        fruitY[i]=0;  fruitX[i]=random(50,450);///水果重生

      }else{

        fruitY[i]=0; fruitX[i]=random(50,450);///沒接住，水果重生

      }

    }

  }

}