How to animate object on curve path in kineticjs?

@shyann 

To animate an object on a curve path in KineticJS, you can use the Kinetic.Path plugin to define the curve path, and then use the Kinetic.Tween plugin to animate the object along the curve path.

Here's an example of how you can animate an object along a curve path in KineticJS:

1. First, create a curve path using the Kinetic.Path plugin:

1
2
3
4
5

var path = new Kinetic.Path({
  data: 'M100 100 C300 100 100 400 300 400',
  stroke: 'black',
  strokeWidth: 2
});

1. Next, create a Kinetic.Tween instance to animate an object along the curve path:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13

var tween = new Kinetic.Tween({
  node: object,
  duration: 5, // duration in seconds
  x: path.getPointAtLength(0).x,
  y: path.getPointAtLength(0).y,
  onUpdate: function() {
    var pos = path.getPointAtLength(this.percent * path.getLength());
    this.node.position({x: pos.x, y: pos.y});
  }
});

// Start the tween
tween.play();

In this example, object is the KineticJS object that you want to animate along the curve path. The onUpdate function is used to update the position of the object along the curve path for each frame of the animation.

By adjusting the duration and using the onUpdate function to update the object's position along the curve path, you can create smooth animations of objects moving along curves in KineticJS.