[Moose-dev] Re: [Mondrian] Where can we set the canvas to draw elements?

Doru Jannik said it several times - check the list. So do not tell him that he did not want to help. Stef On Jun 15, 2010, at 1:25 PM, Tudor Girba wrote: > One more thing. > > It can also be that when you have expensive traversals in your > blocks, you can easily get to quadratic algorithms. > > For example, suppose you have something like this: > > view shape > height: [:each | (classes select: [:target | target invokes: > each]) size]. > view nodes: classes > > In this case, for each class, you would traverse all classes > again, so N^2. > > That is why we need canonical examples first that expose complex > graphs. And those people that have a direct interest in getting > Mondrian fast would be good to help in this direction, because > it can get difficult to understand the particularities of each > model :) > > Cheers, > Doru > > > On 15 Jun 2010, at 13:13, Tudor Girba wrote: > >> Hi, >> >>> now something important is that mondrian is barely usable for >>> us: DSM, package blueprint, torch are all slow. >>> I would really like to see some pragmatic solutions to be >>> found. Like not computing all the blocks all over the time. >> >> This is what we are already discussing, but until now it is not >> clear what exactly generates the slowness. I believe the >> problem comes from the edges, but we have to take a more >> systematic look. >> >> The other thing that has an impact is that right now Mondrian >> computes everything lazily, so even if the visualization >> appears, scrolling might still be problematic the first time >> you go through the entire picture. So, testing should also take >> this into account. >> >> Doru >> >>> Stef >>> >>> On Jun 15, 2010, at 12:43 PM, Tudor Girba wrote: >>> >>>> Hi Cyrille, >>>> >>>> The canvas is defined in MOCanvas. This canvas is embedded in >>>> MOBrowser and MOEasel, which in their turn create a >>>> StandardWindow that holds the MOCanvas. >>>> >>>> Just to inform the others, Cyrille is experimenting with >>>> adding the Athens canvas (which provides an abstraction over >>>> Cairo, Balloon and possibly others) behind Mondrian. >>>> >>>> Cheers, >>>> Doru >>>> >>>> >>>> On 15 Jun 2010, at 11:42, Cyrille Delaunay wrote: >>>> >>>>> Hello, >>>>> >>>>> I have been looking a bit for the place where we set the >>>>> canvas to use in Mondrian, but I didn't find. >>>>> I know that all shapes are drawn on a FormCanvas, but there >>>>> is no references to FormCanvas in mondrian classes. >>>>> I just saw that there is a 'defaultCanvasClass' method in >>>>> the class Form for example, so maybe such a method is use >>>>> somewhere in the code. >>>>> Does somoene know the way to set a new Canvas to Mondrian ? >>>>> >>>>> _______________________________________________ >>>>> Moose-dev mailing list >>>>> Moose-dev(a)iam.unibe.ch >>>>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev >>>> >>>> -- >>>> www.tudorgirba.com >>>> >>>> "Presenting is storytelling." >>>> >>>> _______________________________________________ >>>> Moose-dev mailing list >>>> Moose-dev(a)iam.unibe.ch >>>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev >>> >>> >>> _______________________________________________ >>> Moose-dev mailing list >>> Moose-dev(a)iam.unibe.ch >>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev >> >> -- >> www.tudorgirba.com >> >> "There are no old things, there are only old ways of looking at >> them." >> >> >> > > -- > www.tudorgirba.com > > "In a world where everything is moving ever faster, > one might have better chances to win by moving slower." > > > > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)iam.unibe.ch > https://www.iam.unibe.ch/mailman/listinfo/moose-dev _______________________________________________ Moose-dev mailing list Moose-dev(a)iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev