Re: (1) Rotating drawings in dia, (2) virtual protractor for dia

[rhkramer gmail com]

On Monday, May 20, 2019 04:42:48 PM Zander Brown wrote:
> Personally I'm on-board with this kinda bodge-job, esp if it makes use
> of dia! I mean with all the other outstanding work I'm not going to
> rush to implement stuff that makes this easier but I do kinda like it
>
> Protractor/Ruler is a pretty neat idea though which could be
> interesting and "measure" has been requested in the past, definitely
> worth investigating at some point

By googling I found several things that were essentially "virtual protractors" 
-- here are two I put in my "notebook".  Note that the first does not display 
an image of a protractor (and may only measure angles from the vertical, which 
may mean that you have to measure two angles and find the difference.  The 
second displays an image of a protractor.  There are others, some that only 
work in specific applications (e.g., in the Chrome browser):

   * [[http://osprotractor.sourceforge.net/Protractor.html][Simple on-screen 
protractror.]]--afaict, it doesn't show an image of a protractor, iiuc, you 
just define some points / lines and then you get the angle, it needs Java, at 
least JRE 1.7.
`
On-Screen Protractor is a simple java application that allows to measure an 
angle on the screen.
Originally the program was conceived to assess the angle between north and a 
given point on any map open on the screen, therefore the background of the 
application window is transparent and the angle is measured from the positive 
y-axis and clockwise. The application allows to move the origin of reference 
axes and to rotate the axes as needed.
'

   * [[http://redbridgeserc.org/resources/entry/virtual-protractor][Virtual 
protractor]] -- this one shows an image (iiuc), not sure of software 
requirements