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.NET Forum / Languages / Managed C++ / July 2004Display 2D Lines for mathematic application
Hi There, Does anyone can give me advices to choose a graphical library/control/ocx/other to developp an application displaying 2d lines from large data set (around 30 000 points). I have to developp this app using Visual C++(6 or .NET). These data are coming right from an electronic device, and I need to display and print result as graphs in a short amount of time (less than 8 hours :o) ) Of course, it's a common subject, but I'm not aware of last improvement about graphical resources, so I'm stumped !! I'm reading doc about GDI, but it seems to be too slow for this kind of datasize. I'm thinking about using library from LabViews or Matlab, but perhaps it's like using atomic bomb vs a mosquito :o) Thanks for any advice Gill The fastest display stuff around if you want to do it yourself is DirectX, which is typically used commercially for games. I would imagine any 3rd party libraries you use would need licensing, so if you're on a budget, and don't think GDI (or GDI+) is going to be fast enough, then DirectX is a good choice. GDI+ (the successor to GDI) is far easier to use, though GDI has the advantage of hardware acceleration. You can probably knock something up really quickly in GDI+ either using .NET or vanilla C++, and see if that's going to be fast enough. If it's not, look at something else. You might be surprised at GDI though - 30,000 points isn't a massive number. That's my two, good luck with it! Oh, and you might want to post this on the framework.drawing newsgroup - there'll be people there who will be able to tell you what kind of speeds to expect. Steve > Hi There, > [quoted text clipped - 16 lines] > Thanks for any advice > Gill I've created a Galaxy Creation Program that has 150,000 Stars. To draw them all (If I'm storing them in a class) takes about 15 seconds (1.6 Ghz Pentium, 64 Meg Vid Card, 512 Megs of RAM). If I don't store them in a class (IE, generate the point and draw it immediatly), it takes about 9 seconds. Most of the time is spent translating the points from "Map" points to "Screen" points, which you'll probably need to do. If you need any help, write me at Fireangel__NO__SPAM__@__NO__SPAM__comcast.net (I HATE spam) GE > The fastest display stuff around if you want to do it yourself is DirectX, > which is typically used commercially for games. I would imagine any 3rd [quoted text clipped - 34 lines] > > Thanks for any advice > > Gill Hi there, > I've created a Galaxy Creation Program that has 150,000 Stars. To draw them all (If I'm storing them in a class) takes about 15 seconds (1.6 Ghz Pentium, 64 Meg Vid Card, 512 Megs of RAM). If I don't store them in a class (IE, generate the point and draw it immediatly), it takes about 9 seconds. Most of the time is spent translating the points from "Map" points to "Screen" points, which you'll probably need to do. > If you need any help, write me at Fireangel__NO__SPAM__@__NO__SPAM__comcast.net (I HATE spam) OK, FireAngel ..thanks for your help. Could you give me some precision on the technology you used ?? GDI+/ActiveX ?? Hi, > The fastest display stuff around if you want to do it yourself is DirectX, > which is typically used commercially for games. I would imagine any 3rd [quoted text clipped - 7 lines] > > That's my two, good luck with it! thx for both of them. So I will investigate both of them for some ploting and graphic samples ... > Oh, and you might want to post this on the framework.drawing newsgroup - > there'll be people there who will be able to tell you what kind of speeds to > expect. Yes, good idea Steve. Thanks Gill > Hi There, > [quoted text clipped - 16 lines] > Thanks for any advice > Gill Take a look at our MetaDraw control. MetaDraw is a drawing / image creation tool available as either an OCX or a .NET Winforms component ( the OCX is faster ) 30,000 points is no trouble at all. We can build up such an image in under 2 seconds with no problem at all.. You have full control over colors, line styles, line thickness and you can scroll, zoom, save, print or copy the image to the clipboard. If for some reason the different lines will represent different types of data you can even assign lines to categories and hide and then use that to hide or show different categories or change the colors dynamically. MetaDraw is EASY to use. ----- Jeff Bennett Jeff@Bennet-Tec.Com * Bennet-Tec Information Systems, Inc * 50 Jericho Tpk, Jericho, NY 11753 * Phone 516 997 5596, Fax - 5597 * RELIABLE Components Make You Look Sharp! * TList/Pro * ALLText HT/Pro * MetaDraw * * Custom Software Development Services Too. * WWW.Bennet-Tec.Com =================== =================== Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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