.NET news » Graphics

This article addresses the construction of a simple graph library using C#.

The controls in Windows Forms (.NET) don't support true transparency. In this article we show how to use transparent labels and images.

Arcball (also know as RollerBall) is probably the most intuitive method to view three dimensional objects. The principle of the arcball is based on creating a sphere around the object, and let users to click a point on the sphere and drag it to a different location. There is a bit of math involved of course and you can Google it. The code here is a C# source code implementing an arcball in OpenGL (CsGL to be exact).

A texture transfer program that implements Efros & Freeman's texture transfer algorithm

After growing tired of spending hours zoomed in at 800% magnification using the polygon lasso tool to create combined grayscale and color images in Macromedia Fireworks, I decided that there had to be a better way. Thus I embarked upon creating this application to make my life and hopefully that of others easier.

This article shows how to generate some column chart images for your users on a easy way. You can simply give some arguments to the class library and receive back an image object, or directly save it on hard disk.

My goals for this library were to make it easy to use, and flexible enough to be used no matter how you store your images (FileSystem, Database, Amazon Web Services, etc). As for the discussion on which way is the "best" way to store images - I'll leave that to someone else. However, anyway you go, there's still some common things you have to think about: resizing images and maintaining aspect ratio, uniqueness of file names, etc.

Visual Studio comes with a huge number of pre-built components and controls, including controls for entering and displaying text, letting the user pick options and make choices, displaying values graphically, interacting with databases, displaying dialogs, and containing and arranging other controls. But it comes with surprisingly few controls for displaying graphical data. If you don't want to shell out big bucks for a third-party graphing control, you're pretty much stuck drawing your own pictures on a PictureBox.

Fortunately, drawing graphs isn't all that hard. Mostly it's a matter of drawing lines or boxes to connect some data points. The only really tricky details involve translating data values to and from the pixel coordinate system used to draw on the control..

Learn how to use .NET transformations to make rotating, stretching, and moving objects simple--even for complex objects such as paths and text.

Learn how to use the Graphics object's methods to draw text in different fonts—clipped, wrapped, aligned, stretched, and rotated in all sorts of ways.