Tag Archives: mathematics

Let the user draw, move, and modify an arc in C#, Part 2

My previous post Let the user draw, move, and modify an arc in C#, Part 1 describes an Arc class that allows a program to draw arcs. This post explains how the example program uses that class to let the … Continue reading

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

Let the user draw, move, and modify an arc in C#, Part 1

The example See whether a point is above an arc in C# shows how you can find the part of an arc at a particular position. This example uses the techniques described in that one to allow the user to … Continue reading

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

See whether a point is above an arc in C#

This example shows how you can determine which part of an arc is at a particular position. If you move the mouse over the arc’s start or end point, the program changes its cursor to the PanWest and PanEast cursors. … Continue reading

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

Make a pie slice drawing extension in WPF and C#

This example shows how to make an extension method to draw a pie slice easily in WPF and C#. My post Make an intuitive extension method to draw an elliptical arc in WPF and C# shows how to make an … Continue reading

Posted in drawing, geometry, graphics, mathematics, wpf, XAML | Tagged , , , , , , , , , , , , , | Leave a comment

Make an intuitive extension method to draw an elliptical arc in WPF and C#

In my previous post Draw an elliptical arc in WPF and XAML, I explained how WPF makes you define an elliptical arc. Their method almost makes sense if you want draw an arc as part of a path. however, if … Continue reading

Posted in drawing, geometry, graphics, mathematics, wpf, XAML | Tagged , , , , , , , , , , , , | 2 Comments

Draw an elliptical arc in WPF and XAML

This example shows how to use XAML code to draw an elliptical arc in a WPF. The following sections explain how to specify an elliptical arc and how to draw one in XAML. Specifying an Elliptical Arc WPF provides several … Continue reading

Posted in drawing, geometry, graphics, mathematics, wpf, XAML | Tagged , , , , , , , , , , , , | Leave a comment

Graph equations while preserving aspect ratio in WPF and C#

The previous example, Graph equations entered by the user in WPF and C# shows how to graph an equation entered by the user. The user must also enter the coordinate bounds that the program should use. For example, in the … Continue reading

Posted in algorithms, drawing, graphics, mathematics, reflection, wpf | Tagged , , , , , , , , , , , , , , | 2 Comments

Graph equations entered by the user in WPF and C#

This example uses key techniques described in several examples, mostly the following two: Use transformations to draw a graph in WPF and C# Graph equations entered by the user in C# The following two sections describe the key techniques taken … Continue reading

Posted in algorithms, drawing, graphics, mathematics, reflection, wpf | Tagged , , , , , , , , , , , , , | 1 Comment

Use sines and cosines to draw circles and ellipses in C#

This example shows how you can use trigonometric functions to draw circles. It’s such a basic technique that I often forget that it’s not completely obvious to everyone. Given a radius R and an angle θ, the equations x = … Continue reading

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

Calculate the great circle distance between two latitudes and longitudes in C#

At a small scale, the world is relatively flat. At larger scale, however, is it roughly spherical. (Sorry flat-earthers.) That means the shortest distance between two points on the globe is not a straight line. (Unless you have amazing teleportation … Continue reading

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