Graph current zoom level

[James Song]

Hi guys,

thanks for the help so far. You guys are awesome. Just a quick
question , is there a variable that i can read that determines the
current level of zoom ? i have scanned through the source and have
found nothing much ...

I want to resize text size based on the level of zoom.

Thanks
James 1

[Hamann]

Hi James,

this example below show the resize of text when user Clicked on node

It's a project of Ivan Gasparetto (see post: https://groups.google.com/forum/?fromgroups#!topic/javascript-information-visualization-toolkit/Vts0YeccZ4w )

He ask me things about gradients etc. So i help him a little bit. But he has also worked out the resize text thing.

Check it out on:

http://ivangasparetto.com/jit-test/ 

you might get an idea how to determine  text size based on the level of zoom.  

Op woensdag 16 mei 2012 11:22:32 UTC+2 schreef James Song het volgende:

[Hamann]

If u dig in the jit file U see on linenumber: 2620

onMouseWheel: function(e, win, scroll) {

if(!this.config.zooming) return;

$.event.stop($.event.get(e, win));

var val = this.config.zooming / 1000,

ans = 1 + scroll * val;

this.canvas.scale(ans, ans);

},

U see 2 things:

1 the setup Zoonlevel (this.config.zooming)

2 Scaling the canvas

Also, this.canvas.scaleOffsetX and this.canvas.scaleOffsetY returns the current Scale!!

Op woensdag 16 mei 2012 13:37:51 UTC+2 schreef Hamann het volgende:

[Chandan]

hi hamann
please can u tell me the this which is used in this.canvas.zooming.
i am trying to zoom the rgraph by putting buttons .So, can u help me
on this regard..

Thank You
chandu

On May 16, 5:19 pm, Hamann <stev...@gmail.com> wrote:
> If u dig in the jit file U see on linenumber: 2620
>
> onMouseWheel: function(e, win, scroll) {
> if(!this.config.zooming) return;
> $.event.stop($.event.get(e, win));
> var val = this.config.zooming / 1000,
> ans = 1 + scroll * val;
> this.canvas.scale(ans, ans);
>
> },
>
> U see 2 things:
> 1 the setup Zoonlevel (this.config.zooming)
> 2 Scaling the canvas
>
> Also, this.canvas.scaleOffsetX and this.canvas.scaleOffsetY returns the
> current Scale!!
>
> Op woensdag 16 mei 2012 13:37:51 UTC+2 schreef Hamann het volgende:
>
>
>
>
>
>
>
>
>
> > Hi James,
>
> > this example below show the resize of text when user Clicked on node
> > It's a project of Ivan Gasparetto (see post:

> >https://groups.google.com/forum/?fromgroups#!topic/javascript-informa...

[Hamann]

if  var rgraph = new $jit.RGraph({   

then this =rgraph

so rgraph.canvas.zooming

Op vrijdag 18 mei 2012 09:17:14 UTC+2 schreef Chandan het volgende:

[Chandan]

hi hamann
i am trying to add buttons for zooming please help me to add the
required code for button event

[Hamann]

Hi there,

just tell me exactly what you want ?

Op zaterdag 19 mei 2012 13:10:39 UTC+2 schreef Chandan het volgende:

[Rao Imadabattini]

Hi,

I was trying to redraraw the image.

Step 1: 

 I was able to draw the rGraph.

Step 2: 

When I clicked on any node in the rGraph, we will get the relation ships. and trying to redraw the graph. we need to erase or clean the exising graph and redraw the graph with JSON,

Thanks in advance,

Rao Imadabattini

[Hamann]

See this POST\

maybe this can help U

https://groups.google.com/forum/?fromgroups#!topic/javascript-information-visualization-toolkit/BFII5TLh2IU 

Op maandag 21 mei 2012 11:26:53 UTC+2 schreef Hamann het volgende:

Op maandag 21 mei 2012 11:26:53 UTC+2 schreef Hamann het volgende:

Op maandag 21 mei 2012 11:26:53 UTC+2 schreef Hamann het volgende:

Op maandag 21 mei 2012 11:26:53 UTC+2 schreef Hamann het volgende:

Op maandag 21 mei 2012 11:26:53 UTC+2 schreef Hamann het volgende: