Monthly Archives: December 2015

Make a truncated cube in WPF and C#

Posted on December 31, 2015 by RodStephens

Sorry but this is a pretty long post with a lot of details. If you don’t want to read about how the example program does its tricks, you can just read the first section and look at the pretty pictures. … Continue reading →

Posted in algorithms, graphics, mathematics, wpf | Tagged algorithms, archimedean solids, C#, C# programming, cube, example, example program, graphics, mathematics, platonic solids, truncated cube, Windows Forms programming, WPF | 1 Comment

Initialize a Dictionary in C#

Posted on December 30, 2015 by Rod Stephens

The post Initialize two-dimensional arrays in C# explains how to initialize a two-dimensional array. Even though a Dictionary is a more complicated data type, you can use a similar method to initialize one. Simply enclose each of the Dictionary‘s key/value … Continue reading →

Posted in syntax | Tagged C#, C# programming, dictionary, example, example program, initialization, syntax, Windows Forms programming | Leave a comment

A quick note about the .NET Graphics book Kickstarter

Posted on December 29, 2015 by RodStephens

Several people have told me, “I will definitely buy the book when it’s finished.” Unfortunately that’s not the way Kickstarter works. You need to sign up now to receive a copy of the book. If we reach the project goal, … Continue reading →

Posted in algorithms, drawing, graphics, mathematics, wpf, XAML | Tagged .NET Graphics, 3D, 3D graphics, algorithms, books, C#, C# programming, example, example program, graphics, mathematics, printing, three-dimensional graphics, Windows Forms programming, WPF, XAML | Leave a comment

Draw round circles in scaled coordinate systems in C#

Posted on December 29, 2015 by Rod Stephens

In other posts I explain how you can use transformations to draw objects in a coordinate system other than the one provided “natively” by a PictureBox, Bitmap, and other objects that support drawing. Basically a transformation (represented by a Matrix … Continue reading →

Posted in drawing, graphics, mathematics | Tagged C#, C# programming, drawing, example, example program, graphics, inverse, invert, lines, mathematics, Matrix, pens, scale, transform, transformation, Windows Forms programming | Leave a comment

Initialize an array of arrays in C#

Posted on December 29, 2015 by Rod Stephens

The example Initialize two-dimensional arrays in C# explains how to initialize a two-dimensional array. An array of arrays is somewhat similar to a two-dimensional array but with some syntax differences. The following code shows how this example declares and initializes … Continue reading →

Posted in arrays, syntax | Tagged array of arrays, arrays, C#, C# programming, example, example program, initialize, initialize arrays, multi-dimensional array, syntax, two-dimensional array, Windows Forms programming | Leave a comment

Perform binary contrast enhancement interactively in C#

Posted on December 29, 2015 by Rod Stephens

The example Perform binary contrast enhancement on an image in C# performs binary contrast enhancement by setting each pixel to black or white depending on whether the sum of its red, green, and blue component values is greater than 3 … Continue reading →

Posted in algorithms, graphics, mathematics | Tagged algorithms, binary contrast enhancement, black and white, C#, C# programming, contrast enhancement, example, example program, graphics, mathematics, Windows Forms programming | Leave a comment

Perform binary contrast enhancement on an image in C#

Posted on December 28, 2015 by Rod Stephens

In binary contrast enhancement, you change every pixel in an image to either black or white depending on whether it is brighter than some cutoff value. This example takes a simple approach and makes a pixel white if the sum … Continue reading →

Initialize two-dimensional arrays in C#

Posted on December 26, 2015 by Rod Stephens

The example Initialize arrays, lists, and class instances in C# explains how to initialize a one-dimensional array. You can use a similar syntax to initialize multi-dimensional arrays. Use a new statement to indicate the type of array you are initializing. … Continue reading →

Posted in arrays, syntax | Tagged arrays, C#, C# programming, example, example program, initialize, initialize arrays, multi-dimensional array, syntax, two-dimensional array, Windows Forms programming | 1 Comment

Draw text with a moving brush in C#

Posted on December 22, 2015 by Rod Stephens

This example uses a technique similar to the one used by the example Make a moving background in C#. It uses a gradient brush to draw its text. When the program’s Timer fires, its Tick event handler refreshes the PictureBox … Continue reading →

Posted in drawing, fonts, graphics | Tagged brush, C#, C# programming, drawing, example, example program, fonts, graphics, LinearGradientBrush color gradient, moving brush, moving text brush, Windows Forms programming | Leave a comment

Make a moving background in C#

Posted on December 21, 2015 by Rod Stephens

This example displays text with a moving background color gradient. The following ShadeRect method contains the program’s most interesting code. // Fill the rectangle with a gradient that // shades from red to white to red. private void ShadeRect(Graphics gr, … Continue reading →