Re: [Scaffoldhunter-devel] Zoom Browsing

[<nl...@us...>]

Hi Andrew,

zooming is implemented using Piccolo2D. The methods in VCanvas just provide  
convenient zooming function that are then realized by Piccolo methods. The 
library uses a scene graph model and zooming and panning works by modifying 
the PCamera [1] object associated with the canvas. There is a useful tutorial 
on the Piccolo2D website [2]. 


Regards,
  Nils

[1] 
http://piccolo2d.org/doc/piccolo2d.java/release-1.3.2/core/edu/umd/cs/piccolo/PCamera.html
[2] http://piccolo2d.org/learn/index.html



On Tuesday 22 April 2014 22:24:45 Anjenson wrote:
> Hi Till,
> 
> Well as I understand whenever I want to zoom a selected set or anything
> else it is done with help of /vcanvas/ field. If it is really so I don't
> quite understand how its content is changed as it seems to me that
> operations are applied to /selectio//n//field/. I have already found
> listeners but that are attached to /vcanvas/ in ScaffoldTreeView,
> however I am not sure that it is done through them.
> 
> Regards,
> Andrew "Anjenson" Zhilka
> 
> On 04/22/2014 05:25 PM, Till Schäfer wrote:
> > Hi,
> > i do not understand the context here. Can you explain your idea in more
> > detail?
> > 
> > Greetings,
> > Till