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[Kenneth_Smith]

I have added further examples to my %pl guide/notes, (briefly mentioned in another post). The updated document can be found here.

https://www.dropbox.com/scl/fi/jo676v54s78jt0vm72lox/pl_guide_ver2.pdf?rlkey=lkrf24bg9gbw6qb7sbl2k4044&st=01euszzk&dl=0

The 20+ examples cover many of the basic %pl options including calls to simpleplot_redraw@ to update plots but does not (yet) go as far as attaching a callback to the %pl region, which is when it can get very interesting!

I shall update this thread occasionally as I progress this further.

[DanRRight]

Ken,
That was great guide to the art of 2D X-Y plotting with Clearwin!
Congratulations!

Was always missing such systematic collection of examples from simple to complex, ideally in the form of clipbook library so that you scroll the real examples visually, choose the needed type and in one click it is added to the source code. There with the few touches you correct some minor details. Same with other Clearwin controls. Plato would be ideal for that i think

[DanRRight]

If somebody also translated OpenGL book of examples on FTN95 that would be great.
25 years ago one guy (his nickname I think was djip) have done translation of so called OpenGL red book from C/C++ to some other Fortran compiler but I remember I still had some problems with that in FTN95. He was very helpful with some my stuff.

It's time to move to modern 2D/3D graphics (Ken have done ultimate in details and simplicity guide for that, so the majority have to stop being Luddites, essentially ignoring most of features FTN95 is capable of) , multithreading programming, multiprocessing, GPU acceleration, use GUI etc

[LitusSaxonicum]

Dan,

I thought that you were the current OpenGL guru.

Ken's guide is terrific, and an excellent contribution. It is, however, a 'work in progress', as I think he'd admit. There are still things I don't get. For example, how %pl works to create a window without WINAPP, and why it doesn't need USE CLRWIN until you start to add in calls to WINOP@.

FTN95.CHM is a terrific guide when you know what you are doing and just consult it for reference (ditto the .ENH files), but none of them is a self-instruction text. What's more, despite reading everything on the subject I am only beginning to understand the differences between the original, included, simpleplot, the former, purchasable add-on, and 'native'.

[Robert]

You don't need WINAPP to produce Clearwin windows.

[LitusSaxonicum]

Robert,

Now I am confused.

My FTN95.CHM tells me that the compiler directive WINAPP:

"Creates a Windows executable for use with ClearWin+ (see the ClearWin+ documentation for further information)."

(sic)

Now I discover that I don't need WINAPP to use Clearwin+. It can't be an update since the v8.95 that I'm using, because Ken's examples work ....

Eddie

[PaulLaidler]

WINAPP is used to create a Windows application rather than a console application. If you run a Clearwin+ application without WINAPP (or its equivalent) then you will get a DOS box first and the app is launched from the DOS box.

[PaulLaidler]

FTN95 knows about winio@ so you don't need "use clrwin" for winio@ on its own.

[LitusSaxonicum]

Aha! I get it now. And for reasons of economy, the console window doesn't appear if there isn't any output for it - or hides itself somewhere, or I wasn't looking in the right place ...

[DanRRight]

Eddie,
I have 0.01% of needed knowledge of OpenGL to write any guide for everyone, I know only that absolute minimum about OpenGL which is barely needed to do what I do. And still have a lot of questions about it.

/** That all comes from the principle of good old Salford Fortran, expressed 35 years ago which I understood this way: you do not need to learn any other language besides Salford Fortran and you still will be able to do 99.9% of what you need, and often will achieve it much faster. That perfectly worked for me. Painfully missing there was parallelization but luckily for that from the end of 1990th I used third party parallel libraries, excluding last 3 years when other more standard and modern methods of parallelization - like MPI and GPU - became necessary)

Questions about OpenGL which I still have are of this sort:

1) How the game developers succeed to create real time 4k 3D OpenGL games with 60-120 frames per second while my plots - though very attractive and simple - take 100-1000x more time?

2) How come having 24GB or VRAM I can plot only 35 million polygons which require only 5-10% of that and more do not fit into videocard memory ? (Each polygon defined by 4 points (its corners) in 3D space, each point is 3 single precision numbers in Cartesian x,y,z coordinates)