Usage (signatures)
board.create('turtle', [x, y, angleopt]);
Start position and start direction of the turtle.
Parameters
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
x |
NumberLike | |||
y |
NumberLike | |||
angle |
NumberLike |
<optional> |
90
|
Example
Animation of an 8
var board = JXG.JSXGraph.initBoard('jxgbox',{boundingbox: [-250, 250, 250, -250]});
var t = board.create('turtle', [0, 0], {
strokeOpacity:0.5, strokeColor: 'blue', strokeWidth: 4
});
t.setPenSize(3);
t.right(90);
var alpha = 0;
var run = function() {
t.forward(2);
if (Math.floor(alpha / 360) % 2 === 0) {
t.left(1); // turn left by 1 degree
} else {
t.right(1); // turn right by 1 degree
}
alpha += 1;
if (alpha < 1440) { // stop after two rounds
setTimeout(run, 20);
}
}
run();
board.create('turtle', [coords, angleopt]);
Start position and start direction of the turtle.
Parameters
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
coords |
Array | Array [x, y] with start position |
||
angle |
NumberLike |
<optional> |
90
|
Attributes
Own
arrow
- Description
Attributes for the turtle arrow.
- Type
- Curve
- Source
- options.js, line 11039
Inherited
Members
Own
none
Inherited
Methods
Own
none
Inherited
Events
Own
none