mojs curve editor

MojsCurveEditor is a GUI plugin for interactive custom easings/property curves editing while crafting your animations. Part of mojs tools.

Installation

The MojsCurveEditor depends on mojs >= 0.225.2, tween autoupdates available for mojs >= 0.276.2. Please make sure you've linked mojs library first.

CDN(pending approval):

<script src="//cdn.jsdelivr.net/mojs-curve-editor/latest/mojs-curve-editor.min.js"></script>

NPM:

[sudo] npm install mojs-curve-editor

Bower:

bower install mojs-curve-editor

Import MojsCurveEditor constructor to your code (depends on your environment) :

const MojsCurveEditor = require('mojs-curve-editor').default;
// or
import MojsCurveEditor from 'mojs-curve-editor';

If you installed it with script link - you should have MojsCurveEditor global.

Usage

Construct MojsCurveEditor with the next options:

  const mojsCurve = new MojsCurveEditor({
    // Name of the Curve you are working on. The name is used to
    // identify record in `localStorage` to restore the state from
    // when page gets reloaded, so please specify unique names if
    // you use more than one editor on the same page.
    name:         'bounce curve'
  });

After that you can "connect" the curve with your mojs modules by passing a "sample" of the curve to the easing property of the modules like this:

  const mojsCurve = new MojsCurveEditor();
 
  const tween = new mojs.Tween({
    easing: mojsCurve.getEasing()
  });
 
  // or
 
  const shape = new mojs.Shape({
    easing: mojsCurve.getEasing()
  });
 
  // or as `property curve`
 
  const html = new mojs.Html({
    el:     '#js-el',
    x:      { 100: 100, curve: mojsCurve.getEasing() }
  });

Each tween/module should have it's out sample of the curve, this means you need to call mojsCurve.getEasing() send the sample of the curve to the easing property of modules.

If you use mojs>0.276.5 the state of the modules with the curve sample will be updated automatically.

The getEasing function receives options hash:

  // ...
  easing: mojsCurve.getEasing({
    // `transform` function that pipes thru the current value
    // of the curve so you can transform it
    transform: (k) => { return k; }
  });
  // ...

After you are happy with the curve you made, you need to change the sample(mojsCurve.getEasing() calls) with actual path data which you can get by clicking on the code button ():

  const html = new mojs.Html({
    el:     '#js-el',
    // after the change
    x:      { 0: 100, easing: 'M0, 100 C0, 100 19.8984745544779, 40.10152544552211 30, 30 C40.1015254455221, 19.89847455447789 80, 45 80, 45 C80, 45 100, 0 100, 0 ' }
  });

Options

Constructor accepts the next options:

const curveEditor = new MojsCurveEditor({
  // name of the curve editor
  name:         'bounce curve'
  // if should preserve state on page reloads
  isSaveState:  true,
  // callback on path change, accepts path string
  onChange:     function (path) {}
  // if should hide when minimized - useful when you try to embed the
  isHiddenOnMin: false
});

Public Methods

curveEditor
  // gets `easing function` of the curve
  .getEasing()
  // maximizes the curve editor
  .maximize()
  // minimizes the curve editor
  .minimize()
  // toggles `maximize/minimize` methods regarding editor's state
  .toggleSize();

Shortcuts

alt + z - undo curve action
alt + x - rendo curve action
alt + d - delete selected point(s)
[3 times] alt + \ - reset curve

Please note: all shortcuts work only for active editor - it should have orange mojs logo indicator at bottom left.

Development

Install webpack globally:

[sudo] npm install webpack -g

Install dependencies with npm:

[sudo] npm install

Run webpack:

webpack

Please make sure you started a feature branch with the feature name (better from the dev branch) before making changes.

License

(The MIT License)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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