效果图

 

代码和注释

主流程 main.pde

PFont font;
ArrayList<TextCircle> t = new ArrayList<TextCircle>(); ///< 存储圆环字符串
float MIN_RADIUS = 40;                                 ///< 最小圆环半径, 30 
String []STRS = {"牛轉乾坤", "大吉大利", "疫情退散", "否極泰來"};

void preload()
{
    font = createFont("BZRZ.otf", 32);
}
void setup()
{
    //size(540, 960);
    size(640, 640);

    preload();
    textFont(font);
    smooth(8);

    t.add(new TextCircle(STRS[int(random(STRS.length))])); ///< 随机初始化字符串
}

void draw()
{
    background(170, 91, 96);
    fill(236, 219, 211, 255);
    //background(0);
    //fill(247, 244, 95);
    
    /// @note 更新（半径）并显示字符串
    for (int i = t.size() - 1; i >= 0; i--)
    {
        if (i =