473,473 Members | 2,166 Online
Bytes | Software Development & Data Engineering Community
Create Post

Home Posts Topics Members FAQ

GDI+

I am writing a mapping program in VB.NET 2003. I have drawn
the coast line using Graphics.DrawLines. I now have about 3,500 small
islands around the coast line. Some of the islands are only 4 or 5 plots
and some of the larger islands are 400 to 500 plots. I was going to use
Graphics.DrawPolygon Method but it takes a while to draw 3,500
islands. That is the best way to draw 3,500 polygons?

Simon
Nov 20 '05 #1
2 1040
Hi Simon,

This might be a good time to start learning about DirectX.

Regards,
Fergus
Nov 20 '05 #2
* "Simon Morris" <si**********@xtra.co.nz> scripsit:
I am writing a mapping program in VB.NET 2003. I have drawn
the coast line using Graphics.DrawLines. I now have about 3,500 small
islands around the coast line. Some of the islands are only 4 or 5 plots
and some of the larger islands are 400 to 500 plots. I was going to use
Graphics.DrawPolygon Method but it takes a while to draw 3,500
islands. That is the best way to draw 3,500 polygons?


There won't be a faster way using GDI+. Maybe you can increase
performance by not drawing some of the islands and only showing a part
of the map at one time.

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
<http://www.mvps.org/dotnet>
Nov 20 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

10
by: **ham | last post by:
I know that's an old dirty issue; GDI+ almost -the slowest part of the framework - has bothered many developers using it in animations. Even in managed C++ the performance is awful. Now, any dude...
6
by: James dean | last post by:
I have heard that the video drivers in GDI+ are a big performance issue. But is this only an issue with something like Games Programming i think...is this wrong?. What about a drawing application...
1
by: James dean | last post by:
Could someone explain how this works. I think the graphics card is used to do blitting and drawing shapes like rectangles. How does it draw using the Graphics card on the PC and why is this feature...
6
by: James dean | last post by:
I want a good site that will show clearly how much more functionality GDI+ has. I cannot seem to find anything other than sites that list "some" of the new functionality that GDI+ offers. A...
7
by: | last post by:
We create VC++ programs that does some GDI drawing functionality. I discovered GDI+ and this seems to be a big step forward, and appears to be standard available in Windows XP and Windows Server...
0
by: Brian Keating | last post by:
hi there i've a test program that creates a treeview and destroys it over and over, i keep track of the gdi object count for the process and see if they are ok. However when i switch on...
15
by: David Lozzi | last post by:
Howdy, I have a function that uploads an image and that works great. I love ..Nets built in upload, so much easier than 3rd party uploaders! Now I am making a public function that will take the...
7
by: Marcin Rzeznicki | last post by:
Hello, Do you think it is legitimate practice to mix GDI+ and GDI calls (via Get/ReleaseHDC()) in paint event of a control? I've heard there is possibility of performance loss while "locking"...
5
by: Jonathan Boivin | last post by:
Hi, I've got some problems with loading bills using a bill usercontrol I built. If I load all current bills in my test environment (156) everything is fine once, but repeating the operation...
1
by: Chris Dunaway | last post by:
When working with GDI+, calling the CreateGraphics method to draw on a control has normally been frowned upon and it is always emphasized to dispose of pens and brushes and other GDI objects lest...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
1
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and...
0
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The...
0
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
0
muto222
php
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.