Solved

Direct2D, Windows 7 and C#

Posted on 2012-04-12
9
784 Views
Last Modified: 2012-04-13
If I want better performance in doing a simple annotation, is it accurate to say that I should be using Direct2D instead of GDI+ under Windows 7?

I am writing a C# console application.  At one point, it is currently using System.Drawing.Graphics (which is GDI+ essentially) to do the annotation, like this:

   using (Graphics g = Graphics.FromImage(bm))
            using (SolidBrush solidWhiteBrush = new SolidBrush(Color.White))
            using (SolidBrush solidBlackBrush = new SolidBrush(Color.Black))
            {
                // Write out annotation text
                g.FillRectangle(solidWhiteBrush, 0, 0, bm.Width, bm.Height);
                g.DrawString(AnnotationText, AnnotationFont, solidBlackBrush, new PointF(7f, 2f));

...

...

Open in new window




Is there a faster way to be doing this?

What would be the "Direct2D" way to write these 2 lines of code, specifically:


                g.FillRectangle(solidWhiteBrush, 0, 0, bm.Width, bm.Height);
                g.DrawString(AnnotationText, AnnotationFont, solidBlackBrush, new PointF(7f, 2f));


And what libraries do I need to include to get to the Direct2D methods?

Thank you!
0
Comment
Question by:knowlton
  • 5
  • 4
9 Comments
 
LVL 96

Accepted Solution

by:
Bob Learned earned 500 total points
ID: 37842654
Hey, it looks like you already figured out how to annotate!!

I haven't compared DirectX to GDI+, but my guess is that DirectX would give you the performance over GDI+.
0
 
LVL 5

Author Closing Comment

by:knowlton
ID: 37842695
I am abandoning this strategy.

Direct2D is too low level for our purposes.
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 37842705
May I ask about your "purposes"?  What are your requirements?
0
Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

 
LVL 5

Author Comment

by:knowlton
ID: 37842748
>>>May I ask about your "purposes"?  What are your requirements?

-It is a console app, so no winforms or GUI of any kind.
-Said console app is to take a series of TIFF images and annotate them (add text to the upper left corner of the TIFF image.

Here is the current code, which I want to optimize:

public MemoryStream Annotate(MemoryStream InputImage, string AnnotationText, Font AnnotationFont)
        {
            InputImage.Position = 0;
            
            Bitmap bImagem = new Bitmap(InputImage);
            PixImage pImage = new PixImage();
            pImage.Import(bImagem);
            PixTools.Annotation.AnnotationDocument annotationDoc = new PixTools.Annotation.AnnotationDocument();
            PixTools.Annotation.TextAnnotation textItem = new PixTools.Annotation.TextAnnotation();
            textItem.Text = new PixTools.Annotation.ItemText(AnnotationText);
            annotationDoc.Items.Add(textItem);
            Console.WriteLine("LEAD TOOLS ANNOTATE - no print top");
            PixImage newpi = pImage.MergeAnnotations(annotationDoc, MergeAttributes.MergeColorFormatPreserve, null);
            
            Bitmap anotherBitmap = newpi.GetBitmap();

            MemoryStream ms = new MemoryStream();
            
            anotherBitmap.Save(ms, ImageFormat.Tiff);

            ms.Position = 0;

            return ms;      

        }

Open in new window




Having to create a Bitmap from the MemoryStream  (and at the end, the reverse happens) seems too "heavy" and inefficient.
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 37842794
How many images would you need to annotate during a single run?
0
 
LVL 5

Author Comment

by:knowlton
ID: 37842809
>>>How many images would you need to annotate during a single run?

This is not known until runtime.  Typically, 4 to 6 images.
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 37842819
I was thinking that you needed to process 1000's of files, which would require careful attention to detail.  4 to 6 doesn't sound like you have a big need for optimization.  How fast is this running currently?
0
 
LVL 5

Author Comment

by:knowlton
ID: 37842883
It is taking about 1 second per file.

But I should mention - we are in fact in a scalable environment.

The code should be written as if 1,000's of file might be processed.

Let's proceed as if that were true....if that is agreeable.  :)
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 37843080
Have you profiled this to see what takes the most time in the 1 second?
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to read text with RegEx... 2 25
VS 2017 18 50
transition to visual .net from vb6 5 41
IDE for Python 5 24
This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

831 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question