Zooming an image in a PictureBox - Graphics Discussion Boards

Im not sure about examples using that engine, but a quick google search comes up with plenty of beginner tutorials for DirectX.

If your using C++ I'd recommend this site which provides step by step explanations of the basics.

If you using C# I'd recommend downloading the XNA framework, learning the basics there, and then maybe later working your way back into the more difficult languages. DirectX in C++ in particular can be a big learning curve and the endless errors may eat away at your motivation. XNA is pretty easy and has alot of good examples and (easily understood) documentation, so the fun aspect will stick.

If your still content on using DirectX instead of XNA in C#, then I used the rocket commander tutorials on the microsoft website (coding for fun section).

Mark.

I remembered to see an article about character segmentation in late September or early October, but I can't find it now. The article is about segmentation of touched characters for OCR, like in "WY", or "XY". If someone know where it is, can you please tell me? Thanks a lot!

Hey

Does any one know of an exporter for .max to .x files. I have the trial version of Autodesk 3D Studio max 8 and also
installed a panda plugin that does this for versions 6 and 7.

However it comes back and says it cannot convert this file type.

Thanks

Dan

At university studying Software Engineering - if i say this line to girls i find they won't talk to me

Dan

DanB1983 wrote:
Does any one know of an exporter for .max to .x files

Nope. Does anything come up on google?

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

Hey

No there is very little up on google. Mainly brings up .3ds files, tried a few of them and they dont
do the job

Dan

At university studying Software Engineering - if i say this line to girls i find they won't talk to me

Dan

DanB1983 wrote:
Does any one know of an exporter for .max to .x files.

http://www.okino.com/conv/filefrmt_3dexport.htm[^]

it is a converter, not a built in export capability, but it can be integrated into max as a plugin.

http://www.okino.com/conv/pt4max.htm[^]

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

Hey

Much appreciated, I shall give them a wirl and see if they do the job.

Thanks

Dan

At university studying Software Engineering - if i say this line to girls i find they won't talk to me

Dan

I'm working on an application that displays several large image files simultaneously, and operations on each of the files takes place simultaneously as well, for example when you zoom on one image it zooms all of the images, etc.

I'm using PictureBoxes to display the images.

To do the zooming I first used simply set the SizeMode to zoom and changed the size of the PicutreBox allowing its default methods to resize the image accordingly, as shown below:

public void ZoomImage(double ZoomFactor)<br />
{<br />
  zoomFactor = ZoomFactor;<br />
  pbImage.SizeMode = PictureBoxSizeMode.Zoom;<br />
  pbImage.Height = Convert.ToInt32(Math.Round(origHeight * ZoomFactor));<br />
  pbImage.Width = Convert.ToInt32(Math.Round(origWidth * ZoomFactor));<br />
  MaximumSize = new Size(pbImage.Width + 10, pbImage.Height + 30);<br />
  pbImage.Invalidate();<br />
}

The problem here is that the image quality was poor. I'm not sure what interpolation algorithm it uses to do the resizing, but its not a good one.

Then I tried using a methods that I got from The Code Project that uses Graphics.DrawImage, the core of this code is shown below:

<br />
// Create a new temporary bitmap to resize the original image<br />
// The size of this bitmap is the size of the picImage picturebox.<br />
Bitmap tempBitmap = new Bitmap(pbImage.Width, pbImage.Height, PixelFormat.Format32bppRgb);<br />
<br />
// Set the resolution of the bitmap to match the original resolution.<br />
tempBitmap.SetResolution(origionalImage.HorizontalResolution, origionalImage.VerticalResolution);<br />
<br />
// Create a Graphics object to further edit the temporary bitmap<br />
Graphics bmGraphics = Graphics.FromImage(tempBitmap);<br />
<br />
// Set the interpolationmode since we are resizing an image here<br />
bmGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;<br />
<br />
// Draw the original image on the temporary bitmap, resizing it using<br />
// the calculated values of targetWidth and targetHeight.<br />
bmGraphics.DrawImage(origionalImage, 0, 0, pbImage.Width, pbImage.Height);<br />
<br />
// Dispose of the bmGraphics object<br />
bmGraphics.Dispose();<br />
<br />
// Set the image of the picImage picturebox to the temporary bitmap<br />
pbImage.Image = tempBitmap;

The problem with this code is that it is extremely slow. When zooming to 300% it takes about a minute to resize 9 images on the screen. Using the other method it took about half a second.

Likewise, this methods actually creates new full sized images in memory, which ends up taking over a gig of memory then just to zoom in, which then starts paging and makes it even slower.

So, what are some other alternatives? I need to be able to zoom in using high quality interpolation, but PictureBox doesn't allow you to specify the interpolation method, but the method above, which does result in good picture quality, is orders of magnitude too slow and using too much memory.

Hi,

this is what I would do for simplicity and performance:
- get rid of all those PictureBoxes, replace them each by a Panel;
- load the original images in Bitmap objects once;
- don't create new Bitmaps at different resolutions;
- in each Panel's OnPaint handler simply draw the corresponding image using one of the many
Graphics.DrawImage() overloads that allow to specify both the source Rectangle and the
destination Rectangle, resulting in automatic pan&zoom capabilities.
- when the pan/zoom parameters change, call Invalidate() on all Panels that need a repaint.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use PRE tags to preserve formatting when showing multi-line code snippets

any body please help me!!!
how to draw 3d window(house)
like this!!! with open gl in vb6
-------------
| ---------- |
| | | |
| ----------- |
--------------
window which have 'hole' in the center
please...! i really need tutorial to solve this problem...!!

I don't think you need OpenGL to do ASCII art!

Steve

i'm sory! not that i mean... this forum cann't copy some picture so i draw simple window with char
i mean the real window
like on http://www.squ1.com/solartool
but only the window without shading
please any one!!!

That was GREAT!

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

a quick google came up with this link : http://taoframework.com/[^]

From there you are on your own.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Draw a box and extrude it. Then, draw a smaller box, and use it as a null object to cut it out of the bigger box. Finally, rotate the box. Here's a quick sample of an X file:

xof 0302txt 0064
// File created by CINEMA 4D

template Header {
 <3D82AB43-62DA-11cf-AB39-0020AF71E433>
 WORD major;
 WORD minor;
 DWORD flags;
}

template Vector {
 <3D82AB5E-62DA-11cf-AB39-0020AF71E433>
 FLOAT x;
 FLOAT y;
 FLOAT z;
}

template Coords2d {
 <F6F23F44-7686-11cf-8F52-0040333594A3>
 FLOAT u;
 FLOAT v;
}

template Matrix4x4 {
 <F6F23F45-7686-11cf-8F52-0040333594A3>
 array FLOAT matrix[16];
}

template ColorRGBA {
 <35FF44E0-6C7C-11cf-8F52-0040333594A3>
 FLOAT red;
 FLOAT green;
 FLOAT blue;
 FLOAT alpha;
}

template ColorRGB {
 <D3E16E81-7835-11cf-8F52-0040333594A3>
 FLOAT red;
 FLOAT green;
 FLOAT blue;
}

template IndexedColor {
 <1630B820-7842-11cf-8F52-0040333594A3>
 DWORD index;
 ColorRGBA indexColor;
}

template Boolean {
 <4885AE61-78E8-11cf-8F52-0040333594A3>
 WORD truefalse;
}

template Boolean2d {
 <4885AE63-78E8-11cf-8F52-0040333594A3>
 Boolean u;
 Boolean v;
}

template MaterialWrap {
 <4885AE60-78E8-11cf-8F52-0040333594A3>
 Boolean u;
 Boolean v;
}

template TextureFilename {
 <A42790E1-7810-11cf-8F52-0040333594A3>
 STRING filename;
}

template Material {
 <3D82AB4D-62DA-11cf-AB39-0020AF71E433>
 ColorRGBA faceColor;
 FLOAT power;
 ColorRGB specularColor;
 ColorRGB emissiveColor;
 [...]
}

template MeshFace {
 <3D82AB5F-62DA-11cf-AB39-0020AF71E433>
 DWORD nFaceVertexIndices;
 array DWORD faceVertexIndices[nFaceVertexIndices];
}

template MeshFaceWraps {
 <4885AE62-78E8-11cf-8F52-0040333594A3>
 DWORD nFaceWrapValues;
 Boolean2d faceWrapValues;
}

template MeshTextureCoords {
 <F6F23F40-7686-11cf-8F52-0040333594A3>
 DWORD nTextureCoords;
 array Coords2d textureCoords[nTextureCoords];
}

template MeshMaterialList {
 <F6F23F42-7686-11cf-8F52-0040333594A3>
 DWORD nMaterials;
 DWORD nFaceIndexes;
 array DWORD faceIndexes[nFaceIndexes];
 [Material]
}

template MeshNormals {
 <F6F23F43-7686-11cf-8F52-0040333594A3>
 DWORD nNormals;
 array Vector normals[nNormals];
 DWORD nFaceNormals;
 array MeshFace faceNormals[nFaceNormals];
}

template MeshVertexColors {
 <1630B821-7842-11cf-8F52-0040333594A3>
 DWORD nVertexColors;
 array IndexedColor vertexColors[nVertexColors];
}

template Mesh {
 <3D82AB44-62DA-11cf-AB39-0020AF71E433>
 DWORD nVertices;
 array Vector vertices[nVertices];
 DWORD nFaces;
 array MeshFace faces[nFaces];
 [...]
}

template FrameTransformMatrix {
 <F6F23F41-7686-11cf-8F52-0040333594A3>
 Matrix4x4 frameMatrix;
}

template Frame {
 <3D82AB46-62DA-11cf-AB39-0020AF71E433>
 [...]
}

Header {
 1;
 0;
 1;
}



Mesh CINEMA4D_Mesh {
  8;
  // Extrude_NURBS_1
  180.0;180.0;0.0;,
  -180.0;180.0;0.0;,
  -180.0;-180.0;0.0;,
  180.0;-180.0;0.0;,
  180.0;180.0;20.0;,
  -180.0;180.0;20.0;,
  -180.0;-180.0;20.0;,
  180.0;-180.0;20.0;;
  
  4;
  // Extrude_NURBS_1
  4;0,1,5,4;,
  4;1,2,6,5;,
  4;2,3,7,6;,
  4;3,0,4,7;;
  
  MeshNormals {
    8;
    // Extrude_NURBS_1
    0.707;0.707;0.0;,
    -0.707;0.707;0.0;,
    -0.707;-0.707;0.0;,
    0.707;-0.707;0.0;,
    0.707;0.707;0.0;,
    -0.707;0.707;0.0;,
    -0.707;-0.707;0.0;,
    0.707;-0.707;0.0;;
    
    4;
    // Extrude_NURBS_1
    4;0,1,5,4;,
    4;1,2,6,5;,
    4;2,3,7,6;,
    4;3,0,4,7;;
    
  }
  MeshTextureCoords {
    8;
    // Extrude_NURBS_1
    1.0;0.0;,
    0.25;0.0;,
    0.5;0.0;,
    0.75;0.0;,
    1.0;1.0;,
    0.25;1.0;,
    0.5;1.0;,
    0.75;1.0;;
  }
  MeshMaterialList {
    1;
    4;
    0,
    0,
    0,
    0;
    
    Material C4DMAT_NONE {
      1.0;1.0;1.0;1.0;;
      1.0;
      0.0;0.0;0.0;;
      0.0;0.0;0.0;;
    }
  }
}

Deja View - the feeling that you've seen this post before.

My blog | My articles

Hey all. I posted this here because I don't see a specific WPF forum.

I'm curious if anyone else has wanted to or figured out a way to draw rectangles with only certain of the four corners rounded (for e.g. the bottom corners only). I bet I could sit down and work out a way to do this, but I'm new to WPF so wanted to see if it's been done before.

Thanks,
Logan

{o,o}.oO( Did somebody say MouseDown? )
|)””’)
-”-”-

You can do it, but you have to get a bit tricky. The window border itself can’t be changed, but you can make a borderless window with a shape inside of it that does what you want. You then have to enable dragging the ‘window’ based on dragging its contents, but it’s not a big deal.

Start by setting the following styles on the window:
WindowStyle="None"
Background="{x:Null}"
AllowsTransparency="True"
ResizeMode="NoResize"

Inside this window you’ll need to place a Border object. Inside the Border you can place whatever you want. Now on the Border set its CornerRadius to something like CornerRadius="0,22,0,22" and set your fill and stroke as desired.

Finally, you’ll need to be able to reposition the window regardless of where the user clicks. Fortunately WPF lets you capture events both on the way down (Preview) and on the way back up through the element stack (Element). So to complete your project, in your window class add the following code:

protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonDown(e);
DragMove();
}

And that’s it. You can use this trick for creating windows of literally any shape. Even animation should be supported, though I haven’t tried it. Disclaimer: I’ve only tried this on Vista. I think it SHOULD work on XP, but the Desktop Window Manager in Vista may make a difference.

My posts may include factual data, educated guesses, personal opinion and dry humor. They should not be treated as an official Microsoft statement.
Sites of Interest: MSDN Events | US ISV Team Blog

Ha ha ha. I just realized you only needed the rounded rectangle and I took you all the way to the rounded window. Oh well, all you needed was the CornerRadius bit. And I think you even wrote an article already? Well, good job!

My posts may include factual data, educated guesses, personal opinion and dry humor. They should not be treated as an official Microsoft statement.
Sites of Interest: MSDN Events | US ISV Team Blog

Haha, yes I wrote an article for a Shape-derived class called PartiallyRoundedRectangle before I found out about Border's ability to do essentially the same thing. I found out about that through the article though, so it wasn't a complete waste of time. Wink | ;)

Thanks for the in-depth instructions for making rounded borderless windows even if it's not exactly what I was asking for. Wink | ;)

Logan

{o,o}.oO( Did somebody say MouseDown? )
|)””’)
-”-”-

Hi,

I'm actually writing a CLIENT/SERVER TCP/IPv6 application, under Microsoft Visual Studio C++. In which the SERVER is a file server application and the CLIENT is a "Multiple Document Interface (MDI)" and "RichEdit Text" application that can open multiple files from the server.

I would like to add a Toolbar window into my MDI frame window, to do this, I've created the Toolbar window with the "CreateToolBarEx" function.

But the created Toolbar window is located in the client area of the MDI frame window and each time a new MDI child window is created to hold a new document, it erases the Toolbar window in the client area.

My question is how can I do :
1) To change the client area size so that fits
height(MDI Frame window) - height(Toolbar window)
OR
2) To include the Toolbar window into the
non-client area like the Menubar and the Titlebar

So that the MDI child window can't anymore erase the Toolbar window in the client area.

Thanks,

Alain NGUYEN

-- modified at 19:12 Thursday 22nd November, 2007

this is senthil reply

See title

Deja View - the feeling that you've seen this post before.

My blog | My articles

Don't cross post. It's just plain rude.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

Sorry if my english is not good.

I'm building a program on Windows that take in a table and draws chart, text and some animation effect(text running in bottom of screen). The program must export that to a .avi file.
How can i do that?Do you know any library that can directly manipulate a .avi file like draw on a frame.
Or a library can convert a list of pictures to .avi file.

le van giang

Hello to anybody.
I would like to know how to create a graphic interface like the one used, for example, in PowerDvd or in Windows MediaPlayer which represents the music using graphic effects.

Thanks for any valuable aid you can give to me. Smile | :)