Re: GWT Whiteboard (freehand drawing)

well, we have already started

http://www.emitrom-lienzo.appspot.com/#ExplorerPlaceImpl:pie_chart

that is a pretty poor excuse for a pie chart, but the math is right, and it's only 50 LOC

As for timelines, we have a few things to solidify in Lienzo core, so it will be at least the end of January before we can get to work on it. All of us have full time day jobs,and families, so we get to it as time permits... but..

I have already coded a full GWT binding to Highcharts I use at my day job, much of it is reusable. I just need to study that codebase, it's quite a few years old.

On Tuesday, December 18, 2012 4:01:57 PM UTC-5, James wrote:

I am feeling this library can provide good chart potential abilities. I can wait for a couple of months for my project. Do you have a road map for chart features?

James
On Tuesday, December 18, 2012 12:17:12 PM UTC-5, Dean S. Jones wrote:

GWT Visualization is just for charting, and uses Google's services, Lienzo can be used for Charting, ( as well as any other 2D graphics )... and we are building a charting package that should  surpass GWT Visualization or Highcharts

Charts in general are not all that hard, the math is pretty easy, and the primitive types for drawing them are available in Lienzo, the complexity comes in when you start adding all the configuration options.

Still, it's on the working list of future things to come. Not just charts, but DAG visualization and layout,  diagrams ( Heat Maps, etc ), and visualizations ala InfoVis

:-)

On Tuesday, December 18, 2012 9:55:11 AM UTC-5, James wrote:

Is it promising to use this library for reporting to replace other third party chart libraries such as GWT Visualization?

On Monday, December 17, 2012 5:34:17 PM UTC-5, Alfredo Quiroga-Villamil wrote:

Forgot to mention ... You can also add a touch end handler and apply the same concept. This way it will work on mobile devices as well.

Sent from my iPhone

On Dec 17, 2012, at 4:58 PM, Zach <zjz...@gmail.com> wrote:

Rather than create a new shape, I found I'm able to simply create a LienzoPanel that has a Layer in it. This Layer will be the canvas: on mouse events I can draw a PolyLine and add points to it. After any mouseUp event I can then JSONify the Layer and send that, which will have all shapes within it.

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