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impulse

v0.1.0

Published

[![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/luster-io/impulse?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)

Downloads

20

Readme

#Impulse ![Gitter](https://badges.gitter.im/Join Chat.svg)

Create animations that flow naturally from the user's movements.

Rather than animating properties for a set amount of time, impulse takes a start position, end position, and velocity.

##example

var ball = Impulse(document.querySelector('.ball'))
  .style({
    translate: function(x, y) { return x + 'px, ' + y + 'px' },
  })
//set a starting position
ball.position(50, 50)

ball.spring({ tension: 100, damping: 10 })
  .to(100, 100).start()

More examples can be found here

##Installation

####Browserify

npm install impulse

####Bower

bower install impulse

Exposes a global called Physics

####Component

component install luster-io/impulse

####Manually

Get build/impulse.js or build/impulse.min.js from github.

  <script src="/scripts/impulse.js"></script>

Exposes a global called impulse

##High Level Explanation

Calling Impulse on an element or set of elements returns an Impulse object. A physics object maintains it's own position and velocity. You can interact with a Impulse object (drag, pan, etc), and animate it. Animations take the current position and velocity of the PhysicsObject as a starting point, and animate to a user defined position.

This makes the animations flow naturally from the user's actions. For example a user can drag an element around. Once they're done dragging, the next animation will start from the position and velocity that they left off.

Documentation can be found here

#Contributing

Bug reports are extremely useful, if you think something's wrong, create an issue.

If there's an interaction you'd like to see, but you don't know if it's possible, please create an issue. Maybe we can find a way to build it!

#Discussion

There's also a place to ask questions, or get help here:

https://gitter.im/luster-io/impulse

##LICENSE MIT -- Read LICENSE