Point/Size/Rectangle struct

Point/Size/Rectangle struct anf Graphics class

1. C# Application Programming

All articles and source code are under the Visual C# Kicks license agreement

2. Draw a single pixel on Windows Forms

I'm stuck trying to turn on a single pixel on a Windows Form.

3. Produce a random number in a range using C#

How do I go about producing random numbers within a range?

4. Hit Testing Lines and Curves

Useful graphics applications, such as CAD or drawing programs, permit the user to select and manipulate graphics objects. This article describes three methods for detecting if the user has selected a line or a curve.

5. GDI+ Line/Curve Drawing and Hit Test

Demo application for developing a drawing application using GDI+. Featuring line/curve draw, hit test, and implementation of CObject/CObArray classes.

6. Mathematics of 2D Hit-testing

Computer games or graphical user interfaces often need to check if certain objects overlap, get selected or manipulated by the user. Using a pointing device like a mouse is therefore a very natural way of interacting with the world. Detecting if objects are hit, highly depends on the type of objects that interact with each other.

7. how to map a square to a circle
8. Create a circle out of three points

A circle is a set of infinite points in two dimensions. However, a circle is clearly described by three of such points. The opposite direction is also correct as long as not all three points are on a straight line.

9. How to plot a covariance error ellipse

A typical way to visualize two-dimensional gaussian distributed data is plotting a confidence ellipse. Lets assume we have data D\sim\mathcal{N}(\mu, \Sigma)D∼N(μ,Σ) and want to plot an ellipse representing the confidence pp by calculating the radii of the ellipse, its center and rotation. The following plot shows randomly drawn data and the ellipses for p\in\{0.9, 0.95, 0.99\}p∈{0.9,0.95,0.99}:

10. Graph Marker with Hit-Testing
11. Hit Testing for Lines and Curves

Hit Testing for Lines and Curves

12. Hit Testing in the Visual Layer
13. How to: Use Hit Testing with a Region
14. Results 1 to 12 of 12 Thread: Hit testing on lines, (one for the more mathematically minded maybe)
15. Graphics.ScaleTransform Method

Applies the specified scaling operation to the transformation matrix of this Graphics by prepending it to the object's transformation matrix.

16. The Contains Method and Hit Test in GDI+

The Contains method is used to determining whether a rectangle or point is inside the current rectangle. If a point is inside the current rectangle, the Contains method returns true; otherwise it returns false. One of the common uses of Contains is to find out is a mouse button was clicked inside a rectangle.

17. Understanding the SetStyle Method in GDI+

Windows Forms and controls provide built-in support for double buffering, and the SetStyle method of the Control class plays a vital role in this process. Before we discuss how to use SetStyle, let's take a look at this method and its members.

18. Adding Mouse Gesture Functionality to Your .NET Application Within Seconds
19. Drawing Lines And Rectangles Using the Mouse
20. Move Controls on a Form at Runtime
21. Move and Resize Controls on a Form at Runtime (With Mouse)
22. OAG Library (OpenGL) Part 2.1 - Drawing Objects 2D using the Mouse and Programatically
23. Drawing a bounding box over an image with C#/.net and WinForms