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

[rhkramer gmail com]

On Wednesday, May 22, 2019 08:26:07 AM Zander Brown wrote:
> On Mon, 2019-05-20 at 20:53 -0400, rhkramer--- via dia-list wrote:
> > 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):
> >    * [[
> >
> > https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fosprotra
> > ctor.sourceforge.net%2FProtractor.html%5D%5BSimple&data=02%7C01%7C%7C
> > 404d3dfd51ea4aa05b0208d6dd86d0b5%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7
> > C0%7C636939968428283799&sdata=hZwGgngihi%2F6aLQ6s0FMTElQBXFneSyq1FVm7
> > IkyBac%3D&reserved=0 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.
> > '
> >
> >    * [[
> >
> > https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fredbridg
> > eserc.org%2Fresources%2Fentry%2Fvirtual-protractor%5D%5BVirtual&data=
> > 02%7C01%7C%7C404d3dfd51ea4aa05b0208d6dd86d0b5%7C84df9e7fe9f640afb435aaaaa
> > aaaaaaa%7C1%7C0%7C636939968428293804&sdata=F2rtsuCmu0kajgcd5shJxnyNMk
> > EZlMU2hdvA0WvwW2k%3D&reserved=0
> >
> > protractor]] -- this one shows an image (iiuc), not sure of software
> > requirements
>
> I mean it shouldn't be too hard to implement in Dia as the diagram
> already has defined physical dimensions AND we know the scale at which
> it's being rendered, just need to hook into that
>
> Of course this would be implemented in C as aside from being complex to
> integrate Java is horrible, esp when we want to be packaged for
> Win/macOS
>
> Really it's just needs to be another overlay like selection boxes
>
> Unfortunately I just don't have time ATM to work on that right now,
> focus is on issue backlog and modernisation rather than new features

I can understand that ;-)  Thanks for the response!