调用方法时处理第二个 PApplet window 不更新

Question

我有以下代码，它允许在主 window 中有两个 windows，当按下“k”键时，必须调用 function disegna()

但它似乎无法正常工作，没有绘制更新发生。

你能帮我个忙吗？

int N = 500;
boolean flag = false;
Grafico graph = new Grafico(N, N);

void settings() {
  size(N, N);
}

void setup() {
  surface.setTitle("Grafico1");
  surface.setLocation(0, 0);

  String[] args = {
    "--location=" + (N*2) + ",0", 
    "Grafico2"
  };
  PApplet.runSketch(args, graph);
  grafico();
}

void grafico() {
  background(0);
  text("Main", 10, 20);
}

void keyPressed() {
  switch (key) {
  case 'k':
    graph.disegna();
    break;
  }
}

void draw() {
  if (!flag) {
    frame.setLocation(0, 0);
    flag = true;
  }
}

public class Grafico extends PApplet {
  private final int w, h;

  public Grafico(int w, int h) {
    this.w = w;
    this.h = h;
  }
  
  void settings () {
    size(w, h);
  }
  
  void setup() {
    ini();
  }

  void ini() {
    background(0);
    text("Second", 10, 20);
  }
  
  void disegna() {
     text("Hello!", 10, 50);
     println("Hello!");
  }
  
  void draw() {
  }
}

Answer 1

在 Grafico PApplet的draw()循环中添加一个小的delay(10)使其工作！

public class Grafico extends PApplet {
  private final int w, h;

  public Grafico(int w, int h) {
    this.w = w;
    this.h = h;
  }
  
  void settings () {
    size(w, h);
  }
  
  void setup() {
    ini();
  }

  void ini() {
    background(0);
    text("Second", 10, 20);
  }
  
  void disegna() {
     text("Hello!", 10, 50);
     println("Hello!");
  }
  
  void draw() {
    delay(10);
  }
}