boolean drawFlag = true;  //謠冗判繧定｡後≧繧ｿ繧､繝溘Φ繧ｰ縺九←縺�°繧呈ｱｺ螳壹☆繧九€�

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

void draw() {

  if (drawFlag) {  //謠冗判繧ｿ繧､繝溘Φ繧ｰ縺ｧ縺ゅｌ縺ｰ
    background(255);

    float cx = width/2;  //蜀��荳ｭ蠢�(x)
    float cy = height/2;  //蜀��荳ｭ蠢�(y)
    float radius = width * 0.25;  //蜀��蜊雁ｾ�
    float radian = 0;  //隗貞ｺｦ
    float blur = 50;  //豁ｪ縺ｿ譛€螟ｧ驥�

    float px = 0;  //1繝ｫ繝ｼ繝怜燕縺ｫ險ｭ螳壹＠縺毋蠎ｧ讓吶ｒ險倬鹸縺吶ｋ縺溘ａ縺ｮ螟画焚
    float py = 0;  //1繝ｫ繝ｼ繝怜燕縺ｫ險ｭ螳壹＠縺毓蠎ｧ讓吶ｒ險倬鹸縺吶ｋ縺溘ａ縺ｮ螟画焚

    for (int i = 0; i < TWO_PI/0.01; i ++) {

      radian += 0.01;  //隗貞ｺｦ(繝ｩ繧ｸ繧｢繝ｳ)繧呈ｮｵ髫守噪縺ｫ蠅励ｄ縺励※縺�￥

      float blurredRadius = radius + random(blur);  //蜊雁ｾ�ｒ繝ｩ繝ｳ繝€繝�縺ｫ豎ｺ螳壹☆繧�(蝓ｺ譛ｬ驥�+豁ｪ縺ｿ(0-50)縺ｮ繝ｩ繝ｳ繝€繝�)
      float p1x = cos(radian) * blurredRadius + cx;  //轤ｹ1縺ｮx蠎ｧ讓吶ｒ豎ｺ螳壹☆繧�
      float p1y = sin(radian) * blurredRadius + cy;  //轤ｹ1縺ｮy蠎ｧ讓吶ｒ豎ｺ螳壹☆繧�
      // 蜀�°蜍輔ｒ菴懊ｋ譎ゅ�x蠎ｧ讓吶�cos,y蠎ｧ讓吶�sin繧呈ｱｺ繧∵遠縺｡縺ｧ隕壹∴繧九→濶ｯ縺�→諤昴＞縺ｾ縺�
      // x縺ｯcos(繝ｩ繧ｸ繧｢繝ｳ) * 蜊雁ｾ� + 荳ｭ蠢�せ縺ｮx
      // y縺ｯsin(繝ｩ繧ｸ繧｢繝ｳ) * 蜊雁ｾ� + 荳ｭ蠢�せ縺ｮy


      if (i > 0) {  //繝ｫ繝ｼ繝励′2蝗樒岼莉･髯阪↓縺ｮ縺ｿ謠冗判縺吶ｋ(1蝗樒岼縺ｯ縺ｾ縺�px,py縺梧ｱｺ螳壹＠縺ｦ縺�↑縺��縺ｧ)
        line(px, py, p1x, p1y);
      }

      px = p1x;  //谺｡縺ｮ繝ｫ繝ｼ繝励�縺溘ａ縺ｫx蠎ｧ讓吶ｒ菫晏ｭ倥☆繧�
      py = p1y;  //谺｡縺ｮ繝ｫ繝ｼ繝励�縺溘ａ縺ｫy蠎ｧ讓吶ｒ菫晏ｭ倥☆繧�
    }
    drawFlag = false;  //謠冗判縺檎ｵゆｺ�＠縺溘�縺ｧ繝輔Λ繧ｰ繧断alse縺ｫ縺励※縺翫￥
  }
}
void mousePressed() {
  drawFlag = true;  //謠冗判繧ｿ繧､繝溘Φ繧ｰ縺ｫ縺吶ｋ
}