Turtlegrafik2

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Inhaltsverzeichnis

1 Strichellinie bunt
2 Zickzacklinie bunt
3 Rosette
4 Spiralarme und -galaxien

Strichellinie bunt

public void strichellinie(Object turtle, double x, int n) {
 turtle.right(90);
 for (int i = 1; i <= n; i++) {
  if (i % 2 == 0)
   turtle.penColor(255, 0, 0);
  else
   turtle.penColor(0, 0, 255);
  turtle.forward(x);
  turtle.penUp();
  turtle.forward(x);
  turtle.penDown();
 }
}

canvas1.clear();
turtle1.move(175,250);
strichellinie(turtle1, 20, 4);

Zickzacklinie bunt

public void zickzacklinie(Object turtle, double x, int n) {
 turtle.right(45);
 for (int i = 1; i <= n; i++) {
  if (i % 2 == 0)
   turtle.penColor(255, 0, 0);
  else
   turtle.penColor(0, 0, 255);
  turtle.forward(x);
  turtle.right(90);
  turtle.forward(x);
  turtle.right(270);
 }
}

canvas2.clear();
turtle2.move(175,250);
zickzacklinie(turtle2, 50, 10);

Rosette

public void n_eck(Object turtle, double x, int n) {
 double winkel = 360 / n;
 for (int i = 1; i <= n; i++) {
  turtle.forward(x);
  turtle.right(winkel);
 }
}

public void rosette(Object turtle, double x, int m, int n) {
 double winkel = 360 / m;
 turtle.penColor(255, 125, 125);
 for (int i = 1; i <= m; i++) {
  n_eck(turtle, x, n);
  turtle.right(winkel);
 }
}

canvas3.clear();
turtle3.move(175,250);
rosette(turtle3, 50, 20, 5);

Spiralarme und -galaxien

public void quadrat(Object turtle, double x) {
 for (int i = 1; i <= 4; i++) {
  turtle.forward(x);
  turtle.right(90);
 }
}

public void spiralarm(Object turtle, double x, double dx, double winkel) {
  if (x>dx){
  quadrat(turtle,x); 
  turtle.right(winkel);
  spiralarm(turtle,x-dx,dx,winkel);
 }
}

canvas4.clear(); 
turtle4.move(150, 200);
turtle4.penColor(255, 125, 125);
spiralarm(turtle4, 120, 2, 6);

public void galaxie(Object turtle, double x, int m, int n) {
 double winkel_m = (double) 360 / m;
 double winkel_n = (double) 360 / n;
 double dx = x / n;
 for (int i = 1; i <= m; i++) {
  spiralarm(turtle, x, dx, winkel_n);
  turtle.right(winkel_m); 
 }
}

canvas5.clear(); 
turtle5.move(200, 150);
turtle5.penColor(255, 125, 125);
galaxie(turtle5, 100, 5, 30);

Turtlegrafik2

Inhaltsverzeichnis

Strichellinie bunt

Zickzacklinie bunt

Rosette

Spiralarme und -galaxien

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