Tag Archives: mathematics

Animate rainbow colors in C#

Posted on August 9, 2017 by RodStephens

The example Map numeric values to and from colors in a color gradient in C# draws a color gradient that uses rainbow colors. This example animates that one. When you click on the color gradient, the following code starts or … Continue reading →

Posted in algorithms, animation, graphics, mathematics | Tagged algorithms, animation, C#, C# programming, colors, data analysis, data visualization, example, example program, graphics, map colors, map values to colors, mathematics, rainbow, rainbow colors, Windows Forms programming | Leave a comment

Animate exploding 3-dimensional pie slices in C#

Posted on August 8, 2017 by Rod Stephens

The example Draw 3-dimensional pie slices in C# shows how to highlight one or more 3-D pie slices by “exploding” them. This example draws even more attention to the exploded pie slices by animating their explosion. The program controls the … Continue reading →

Posted in algorithms, animation, graphics, mathematics, multimedia | Tagged 3-D pie slice, 3-dimensional pie slice, algorithms, animated pie slices, animation, C#, C# programming, DrawPie, example, example program, FillPie, graphics, mathematics, multimedia, pie chart, pie graph, pie slice, three-dimensional pie slice, Windows Forms programming | Leave a comment

Calculate where a line segment and an ellipse intersect in C#

Posted on August 3, 2017 by Rod Stephens

Finding the intersection between a line segment and an ellipse requires a lot of mathematics. It’s not particularly hard mathematics, but if you’d rather skip it, you can use the following links to jump to the other parts of this … Continue reading →

Posted in algorithms, drawing, geometry, graphics, mathematics | Tagged algorithms, C#, C# programming, drawing, ellipse, ellipse line intersection, ellipse/line intersection, example, example program, geometry, graphics, intersection, line, line ellipse intersection, line segment, line/ellipse intersection, mathematics, Windows Forms programming | 5 Comments

Produce a repeatable series of “random” numbers in C#

Posted on July 25, 2017 by Rod Stephens

The Random class can generate a series of pseudo-random numbers. They’re called “pseudo-random” rather than “random” because the numbers are generated by a mathematical algorithm rather than by some completely unpredictable process such as observing a source of radioactive decay … Continue reading →

Posted in algorithms, mathematics | Tagged algorithms, C#, C# programming, example, example program, inirialize random number generator, mathematics, pseudo-random numbers, random, random class, random number generator, random numbers, seed, Windows Forms programming | Leave a comment

Book Review: The Manga Guide to Linear Algebra

Posted on July 15, 2017 by Rod Stephens

(Occasionally I post reviews of book that I think may interest programmers, in this case admittedly only those with a mathematical inclination.) The Manga Guide to Linear Algebra $24.95, 264 pages, 2012 By Shin Takahashi No Starch Press ISBN … Continue reading →

Posted in books, mathematics | Tagged book reviews, books, C#, C# programming, example, example program, linear algebra, mathematics, Windows Forms programming | Leave a comment

Make extension methods to generate random double values in C#

Posted on July 5, 2017 by Rod Stephens

This example adds extension methods to the Random class to generate double values within a specified range. The Random class provides methods for generating pseudo-random numbers. The Next method has three overloaded versions that produce a non-negative integer, an integer … Continue reading →

Posted in extension methods, mathematics | Tagged C#, C# programming, example, example program, extension methods, mathematics, NextDouble, random, random class, random numbers, Windows Forms programming | 1 Comment

Calculate the present value of a future amount of money in C#

Posted on May 29, 2017 by Rod Stephens

This example shows how to calculate the present value of a future amount of money. Suppose you want a certain amount of money in a given number of years and you know you can realize a specific interest rate (compounded … Continue reading →

Posted in algorithms, mathematics | Tagged algorithms, C#, C# programming, compound interest, discount value, example, example program, mathematics, present discounted value, present value, Windows Forms programming | Leave a comment

Compare the performance of simple arithmetic operations in C#

Posted on May 26, 2017 by Rod Stephens

I saw a post the other day that said division was the slowest arithmetic operation so I wrote this example to see exactly how the performance of multiplication, division, addition, and subtraction differ with floating point numbers. When you click … Continue reading →

Posted in mathematics, performance | Tagged addition, C#, C# programming, division, example, example program, mathematics, multiplication, performance, speed, subtraction, Windows Forms programming | 1 Comment

Make a 3D globe in WPF and C#

Posted on May 25, 2017 by RodStephens

This example shows how you can draw a 3D globe. More generally it shows how you can make a three-dimensional textured sphere in WPF. The example Draw smooth spheres using WPF and C# shows how to make smooth colored spheres. … Continue reading →

Posted in algorithms, drawing, geometry, graphics, mathematics, wpf, XAML | Tagged 3D, 3D globe, algorithms, C#, C# programming, drawing, example, example program, geometry, graphics, mathematics, sphere, tectured sphere, texture, Windows Forms programming, WPF, XAML | Leave a comment

Graph event probabilities in C#

Posted on May 25, 2017 by Rod Stephens

The example Calculate the probability of an event occurring in a given number of trials in C# shows how to calculate event probabilities. This example graphs the results. You can use the example to get some feel for how the … Continue reading →