I have an image with and have a few values to make it a perspective in Silverlight, but can't quite figure out what I need to do mathmatically to make it happen. The most important thing is I have an angle called a "Field of View" (FOV). This is the normal picture: For example: X = 30° X = 30° X = 30° ...
I am trying to rotate a monochrome Bitmap in GDI+ using RotateFlip method. When i try to rotate it by 90/270 I get a wrong image or the application crashes. But when I try to rotate it by 180 degrees it works fine. Hence I am now rotating all monochrome bitmaps twice through 180 and then rotating it again by the angle required. Is this ...
I paint a drawing on a drawing area. In order to optimize the performance of that drawing I decided to redraw only inside the really necessary region(clipping region). See the picture. The problem is that I don't arrive to build a method(GetBitmapFromRectangle) that returns me the result of intersection of my paths with the clipping r...
I want to save my created image as a PNG or JPEG file with the help of GDI+ but i can't find a way to do this. Seems that there is no way to create a non file based Image and fill it with a bitblit from the HBITMAP. Or do i miss something? ...
What is, in a "for dummies" interpretation, the difference between System.Drawing.Drawing2D.Matrix TransformPoints(pointsArray) <==> TransformVectors(pointsArray) ? Edit: there is also a VectorTransformPoints(...) method, by the way... :) ...
Hi all, I would like to know if I can use FNT font file in c# .net. FNTs are not windows font file. If such fonts are available, can you please tell me how to load it and change windows form font to FNT? I use .Net GDI+ technology, but please let me know if WPF is better for this. Thanks, ...
Currently I am implementing a graphic editor project using C#, my project should to have ability to display bitmap font. I plan to write a COM component in VC++ and send bitmap font as bitmap array to C# and implement a string render class. However my project leader thinks that the method will take to much time and want a easier solution...
I have the following sample code, which I expect to color the panel on the form red as soon as it loads: public partial class Form1 : Form { public Form1() { InitializeComponent(); drawstuff(); } public void drawstuff() { using (Graphics g = panel1.CreateGraphics()) { g.C...
I'm trying to remove all white or transparent pixels from an image, leaving the actual image (cropped). I've tried a few solutions, but none seem to work. Any suggestions or am I going to spend the night writing image cropping code? ...
hy there! i left out usings etc... just plain code: var image = Image.FromFile(/* my magic source */); var bitmap = new Bitmap(image.Width, image.Height); var canvas = Graphics.FromImage(bitmap); var brush = new SolidBrush(/* my magic color */); canvas.FillRectangle(brush, 0, 0, image.Width, image.Height); canvas.DrawImage(image, new R...
I've got a byte array for an image (stored in the database). I want to create an Image object, create several Images of different sizes and store them back in the database (save it back to a byte array). I'm not worried about the database part, or the resizing. But is there an easy way to load an Image object without saving the file t...
I have a drawing graph on a panel. The drawing has 2 components: "background" Grid and "foreground" graph. The user can move the graph lines, but the background remains static (for a selected time interval). Re-drawing the background is a little expensive. Is there a way to keep the background "intact" and redraw the "foreground" graph ...
I have a Bitmap called "buffer" to which I Paint another image (using DrawImage) Paint a partially transparent gradient (using a LinearGradientBrush) I call Flush(FlushIntention.Sync) on the buffer's Graphics object after each of those steps. I then paint the contents of the buffer onto an on-screen control. However, while debugging...
I am using a DrawItem and MeasureItem events to paint a combobox with a DrawMode of OwnerDrawVariable. Basically, I'm trying to have the user highlight a selection with the mouse, and then press the space bar to toggle the Save status of a song list. Then I call the Me.Refresh() event for the form in an attempt to redraw the form and t...
I have a PictureBox on a form. In Load event of the form I create graphics as follows: imageGraphics = Graphics.FromImage(PictureBox1.Image) Then, in PictureBox_MouseMove event I draw ellipse: imageGraphics.FillEllipse(New SolidBrush(brushColor), e.X, e.Y, brushWidth, brushWidth) No matter what I try, it always draws on incorrect ...
I'm using the following codeproject to build an asp.net website and so far everything is good. My only problem is after the barcode is generated, a huge whitespace exist to the right of the barcode. I've been playing with this and am unable to resolve it. Details below: Link to Code Project Article: http://www.codeproject.com/KB/aspn...
I have to write several small vertical gradients (on a loop) and so I think it's faster to re-use an existing LinearGradientBrush (correct?) But this isn't what I expected to happen... Drawing2D.LinearGradientBrush myBrush = new Drawing2D.LinearGradientBrush(new Rectangle(0, 0, 200, 200), Color.Red, Color.Black, Drawing2D.LinearGradi...
Hello there! I have an application with transparent background in client area which is drawn black because the window is not layered. In each of it's WM_PAINT messages I am doing a BitBlt to a memory-DC, after that I use the memory-DC with UpdateLayeredWindow to a layered canvas window. setup of memory-DC: HDC hdcMemory = CreateCompat...
I've narrowed down the issue I'm having to this block of code, where I am resizing an uploaded image and saving it. This works fine on my local machine, but when I run the site on the server, I get a generic GDI+ error that's coming from the "thumbnail.Save" call. if(fup_displayPicUpload.HasFile) { string ima...
How to using gdi+ to write Exif info into a exist image file in C++ windows? I get a part of code in the following way, however I think most of the following code is not necessary: BOOL bRet = FALSE; CString cstrFormat = TransferImageFormatToString(eFormat); if ( !cstrFormat.IsEmpty() ) { CLSID clsid; int fd = _open(CSTRI...