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Tag Archives: points
Draw many circles that intersect two points in C#
As I mentioned in my earlier post Connect two points with elliptical arcs in C#, an infinite number of circles (or ellipses) can pass through two points. This example draws some of them to produce an interesting pattern. This example … Continue reading
Posted in algorithms, drawing, graphics, mathematics
Tagged algorithms, C#, C# programming, circles, drawing, example, example program, graphics, mathematics, points, Windows Forms programming
1 Comment
Connect two points with elliptical arcs in C#
As I mentioned in my earlier post Connect two points with arcs of midpoint circles in C#, two points alone cannot uniquely define a circle. An infinite number of circles (or ellipses) can pass through two points and therefore they … Continue reading
Posted in drawing, graphics, mathematics
Tagged arcs, C#, C# programming, drawing, example, example program, graphics, mathematics, midpoint, points, Windows Forms programming
1 Comment
Connect two points with arcs of midpoint circles in C#
Two points alone cannot uniquely define a circle because an infinite number of circles can pass through two points and therefore they can be connected by an infinite number of arcs. If you add extra information, however, two points can … Continue reading
Posted in drawing, graphics, mathematics
Tagged C#, C# programming, circles, drawing, example, example program, graphics, mathematics, midpoint, points, Windows Forms programming
1 Comment
Use vectors to manage bouncing balls in C#
This example is similar to the one Use sprites to animate several bouncing balls in C# except it uses vectors to store information about the balls. A vector is a direction represented by X and Y coordinates. For example, the … Continue reading
Posted in algorithms, animation, audio, geometry, graphics, multimedia
Tagged algorithms, animation, audio, boing, bouncing balls, bouncing sprites, C#, C# programming, example, example program, geometry, graphics, multimedia, points, resources, SoundPlayer, sounds, sprites, vectors, Windows Forms programming
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Use a GraphicsPath to determine whether a point lies inside a polygon in C#
The example Determine whether a point is inside a polygon in C# shows a mathematical technique for telling if a point lies inside a polygon. This example uses .NET’s GraphicsPath class to do the same thing. The following PointIsInPolygon method … Continue reading
Posted in algorithms, geometry, graphics, mathematics
Tagged algorithms, C#, C# programming, example, example program, geometry, graphics, inside polygon, mathematics, point inside polygon, points, polygons, Windows Forms programming
3 Comments
Determine whether a point is inside a polygon in C#
One way to determine whether a point lies within a polygon is to add up the angles between the point and adjacent points on the polygon taken in order. For example, if the point in question is P and points … Continue reading
Posted in algorithms, geometry, graphics, mathematics
Tagged algorithms, C#, C# programming, example, example program, geometry, graphics, inside polygon, mathematics, point inside polygon, points, polygons, Windows Forms programming
15 Comments
Find the convex hull of a set of points in C#
This example shows how to find the convex hull for a set of points. The details are fairly complicated so I’m not going to show them all here, but the basic ideas are relatively straightforward. A convex hull is a … Continue reading
Posted in algorithms, geometry, graphics
Tagged algorithms, C#, C# programming, convex hull, example, example program, geometry, graphics, points, polygons, Windows Forms programming
10 Comments