Draw an oblique line with TweenMaxJS

[FracArt]

Hi everybody,

 

for a personal project I would like to build an oblique progress bar.

 

So, my first question is: Is there a way to create dynamically and easily a Line object with Tweenmax.js?

 

For the moment I just resize the width of a rectangle shape like this : http://jsfiddle.net/FracArt/6GJ67/2/

Which actually works! But seems a bit "hacky".

 

Second question, as you can notice on the jsfiddle file I tried to build an oblique progress bar on the same principle. However, when I rotate the rectangle a gap appears between the initial and final position of the bar.

So do you have an idea of how I can correct that without doing some geometry calculations?

(maybe a transform-origin property on the css?)

[Rodrigo]

Hi and welcome to the forums,

 

One way would be to rotate the element and scale it down with a TweenMax.set and then scale it back to 1, like this:

var obliqBar = document.getElementById("progBar"),
    tl1 = new TimelineMax();

TweenMax.set(obliqBar, {rotation:25, scaleX:.001, transformOrigin:'0% 50%'});

tl1.to(obliqBar, 0.5, {scaleX:1});

I've updated your fiddle so you can see it working:

http://jsfiddle.net/rhernando/6GJ67/3/

 

Hope this helps,

Cheers,

Rodrigo.

[FracArt]

That did the trick! Thanks a lot for you answer and update rhernando.

 

So I assume there is no current solution for drawing a line easily with this library ?

[Carl]

Hi FracArt,

 

Welcome to the GreenSock forums. 

Our JavaScript tools currently focus only on animation. If you need to an advanced drawing API you should probably look to some canvas or SVG libraries. 

 

KineticJS line:

http://www.html5canvastutorials.com/kineticjs/html5-canvas-kineticjs-line-tutorial/

[FracArt]

Hi Carl, first of all thank you for this great javascript library 

 

In the past I used the flash version of this tool and its method LineTo(). However, in view of your last comment, I now understand why I can't find an equivalence with the JS version.

 

 

Problem solved.