Turtle Graphics

This is a very basic implementation of turtle graphics with JSXGraph.

List of commands

There is a predefined turtle object t. Therefore, all commands start with t, like t.fd(100);

• t.forward(len); or t.fd(len);
• t.back(len); or t.bk(len);
• t.right(angle); or t.rt(angle);
• t.left(angle); or t.lt(angle);
• t.penUp();
• t.penDown();
• t.clean();
• t.setPos(x,y);

Snowflake Example

function side(size, level) { if (level==0) { t.fd(size); return; } side(size/3, level-1); t.lt(60); side(size/3, level-1); t.rt(120); side(size/3, level-1); t.lt(60); side(size/3, level-1); } function snowflake(size, level) { (3).times(function() { side(size, level); t.rt(120); }); } t.clean(); t.lt(30); t.setPos(0,-100); snowflake(250, 3);