week02

1.複習上週進度
2.畫出相似圖形

void setup(){
  size(400,400);
}
int r=30;
void draw(){
  ellipse(mouseX,mouseY,r,r);
  r-=3;
  if(r<0) r=30;
}

3.變換顏色

void setup(){
  size(400,400);
  colorMode(HSB,100);
}
int r=30,H=0; //H色調
void draw(){
  fill(H,100,100);
  ellipse(mouseX,mouseY,r,r);
  r-=3;
  if(r<0) r=30;
  H++;
  if(H>=100)H=0;
}

4.不用滑鼠移動，隨機生成

void setup(){

  size(400,400);

  colorMode(HSB,100);

}

int r=30,H=0;//r半徑，H色調

int CircleX=200,CircleY=200;

void draw(){

  fill(H,100,100);

  ellipse(CircleX,CircleY,r,r);//畫圓

  r-=2;

  CircleX+=random(30)-15;//隨機生成範圍0~15

  CircleY+=random(30)-15;

  if(r<0){ 

    r=50;

    CircleX=200;CircleY=200;

  }

  H++;

  if(H>=100)H=0;

}

5.電腦當機(讀圖)

PImage img;

void setup(){

  size(1280,720);

  img=loadImage("error.png");//載入圖片

}

void draw(){

  image(img,mouseX,mouseY);

}

PImage img,img2;

void setup(){

  size(1280,720);

  img=loadImage("snoopy.png");

  img2=loadImage("BG.png");

}

void draw(){

  image(img2,0,0,width,height);

  image(img,mouseX,mouseY,100,130);

}