Hi :)
I just checked out some other graph - tool at the gnome - files - repository. A link:
http://www.gnomefiles.org/app.php/GraphThing
File - format is a bit like what you use (coordinates and the rest are in 1 file though)
Format used:
vertex <"A"> at (x,y)
vertex <"B"> at (x,y)
etc....
one empty line
edge "A" -- "B"
edge "B" -- "C"
etc....
The idea of all sorts of layouts is a nice feature of the program. Circle, wheel, line etc....
Yep this program seems nice ! And embedding Coords AND Graph infos in the same file would be nice. But I should rewrite once again the loading/saving routines so I keep this idea in a todo list but I don't think i'll code this now.
When loading a large graph the drawing of vertices and edges takes very little time (nice one that). However, adding the graph to the edit - box takes (compared to the time it takes to draw a graph) a very long time. After the graph has been drawn the user just sits around waiting for the text - box to get filled up.
Redrawing of the bottom - left - side of the main - window has been rather slow (up to this version of the graph - editor anyway). Have you got any idea why?
I've checked out the source and in the bottom - left side you use a lot of containers to get the lay - out the way you want it. I'm guessing that is what slows things down when the bottom - left part of the screen gets redrawn. But that's just a guess, I guess.
Hum .. The "update time" you get is weird, It doesn't take anytime for me. Still, I have the redrawing time of the layout too, maybe i should rewrite the layout or something.. I don't know, i'll check it!
2nd post :
When entering some vertices and choosing menu -> new (without having saved the vertices) the vertices get removed from the text - area (the tex - area gets 'cleared').
I don't get it, it's normal to clear all areas when clicking on "new file". Did you want to keep the text area content when clicking "New" ?
When I open a large graph (maximum number of vertices, maximum number of arcs) in a maximized window all is well. When I then make the window smaller a large part of the graph isn't visible any more. When maximizing the window again the entire graph gets shown again. Not sure though if this is a bug.
Yep that's totally normal : I'll implement scroll bars (Well, I tried but it was harder than I thought, I'll work on it) to have an "infinite" workspace :)
When I enter an illegal arc in the text - area (an arc from an existing vertex to a non-existing vertex) there is no message: when updating (canvas) the arc just gets removed from the text - area.
In fact, the Text area is checked only when the user asks for update, so illegal arcs are checked in the same time. I'll implement a message box with the removing.
When entering vertices and arcs but forgetting to end the arcs with a ';' I get the message "Updating error, please check syntax". After the message that I cannot check the syntax because the text - area gets cleared.
Hum yeah, the text area should go back to the last valid state .. But when the ";" is forgotten before the first update of the graph, the last valid state is the blank text area. I'll check it.
When choosing new while there is an unsaved graph I get the save - dialog. When I then press "Cancel" ('do not save and do not create a new graph, I changed my mind, I want to work on this graph some more') the graph gets cleared.
Oops, i forgot to add a "Cancel" button in the "Save Graph?" msg box, it'll be fixed :)
Some minor issues now. I was hoping the text - buttons would be replaced by picture - buttons with shortcuts. And though the buttons have been replaced there are no shortcuts.
Yeah I didn't implement it. On the Todo List !
Would it be possible to place the numbers above the vertices inside the vertices (GL - canvas)? The canvas would look less cluttered.
It would be possible :) I forgot to change it when I changed the rendering method.
And would it be a good idea to let the program generate numbers and place the numbers on the left - hand - side of the text - area (as an 'uneditable' part of the GUI?). It would look like line-numbering.
I like the idea of the line numbers, I'll think about it.
The window - updating is still slow, it did not get better with this version. The problem lies in the size of the graph: updating gets slower as the graph gets bigger.
Hum .. I'll have to work a lot on optimization (lines are still drawn by calculating a lot of cosines and arctans)
That's it for now and I will be posting again very soon.
Before I forget: graph-editor is looking great now. When it is (more or less) 'finished' it'll be quite a piece of work. Not bad at all for a first project ;)
Thanks :) I have to admit it's becoming less and less funny with time (I have a lot of ideas for other projects and Graph theory doesn't interrest me like in the beginning of this project), but I'm really glad I went this far, thanks to you. I'll continue debugging and adding things to this project, but to be totally honest, I guess it will be less often !
Once again, thanks (a lot ! ) for your implication !
