Category Archives: graphics

Draw words on a circle in WPF and C#

This example shows one way that you can draw words on a circle in WPF. Note that it does not show how to draw words where each character is rotated to follow the circle’s curve. Each word is rotated as … Continue reading

Posted in algorithms, graphics, mathematics | Tagged , , , , , , , , , | Leave a comment

Draw a hyperbolic spiral in C#

A hyperbolic spiral, which is also called an reciprocal spiral, is the inverse of an Archimedes spiral. It uses the equation r = A / θ to generate points on a spiral. This spiral has a couple of interesting properties. … Continue reading

Posted in algorithms, graphics, mathematics | Tagged , , , , , , , , , | Leave a comment

Draw a logarithmic spiral in C#

The post Draw an Archimedes spiral in C# uses the equation r = A˙θ to generate the points on a spiral. This example is almost exactly the same except it uses the equation to r = A˙eB˙θ to generate its … Continue reading

Posted in algorithms, graphics, mathematics | Tagged , , , , , , , , , | Leave a comment

Draw a filled spiral in C#

My post Draw an Archimedes spiral in C# explained how to draw multiple Archimedes spirals starting at a common center point. This post shows how you can fill the spaces between the spirals with colors. The basic idea is to … Continue reading

Posted in algorithms, graphics, mathematics | Tagged , , , , , , , , , , | 2 Comments

Draw an Archimedes spiral in C#

An archimedes spiral is defined by the polar coordinate equation r = A * θ. It’s just as simple as that, and this would be a significantly shorter post except for one question: how do you know how big you … Continue reading

Posted in algorithms, graphics, mathematics | Tagged , , , , , , , , , | 2 Comments

Tile a board with randomly colored trominoes in C#

The post Tile a board with colored trominoes in C#explains how to color a tromino filing so no two adjacent trominoes share the same color. That example basically tried every possible color for each of the trominoes until it found … Continue reading

Posted in algorithms, drawing, graphics, mathematics, recursion | Leave a comment

Tile a board with colored trominoes in C#

The post Tile a board with trominoes in C# explains how to tile a board with a missing square with trominoes. This post shows how to color the trominoes so no two adjacent ones share the same color. The four-color … Continue reading

Posted in algorithms, drawing, graphics, mathematics, recursion | Tagged , , , , , , , , , , , , , , , , , , | 1 Comment

Tile a board with trominoes in C#

Trominoes are polyominoes of order three. That means they are polygons made up of three equal sized squares joined at their edges. There only are two kinds of trominoes: three squares joined in a line and three squares joined in … Continue reading

Posted in algorithms, drawing, graphics, mathematics, recursion | Tagged , , , , , , , , , , , , , , , , , | 1 Comment

Draw text wrapped to fit columns in C#

The post Draw aligned columns of data in C# shows one way to draw text in rows and columns. It uses the Graphics class’s MeasureString method to size the columns so they are big enough to display their data without … Continue reading

Posted in fonts, graphics, lists | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Draw a randomly colored Sierpinski pentagon in C#

The example Draw a colored Sierpinski pentagon in C# lets the user click on the parts of a Sierpinski pentagon to change their colors. Eddie Bole thought it would be interesting to color the larger pentagons in addition to the … Continue reading

Posted in drawing, fractals, graphics, recursion | Tagged , , , , , , , , , , | 4 Comments