-
Recent Books:
![[Essential Algorithms, Second Edition]](http://www.csharphelper.com/essential_algs_2e_158_200.jpg)
![[WPF 3d, Three-Dimensional Graphics with WPF and C#]](http://www.csharphelper.com/wpf3d_160_200.png)
![[The C# Helper Top 100]](http://www.csharphelper.com/top100_161_200.png)
![[Interview Puzzles Dissected]](http://www.csharphelper.com/interview_puzzles_161_200.jpg)
-
Recent Posts
-
Recent Comments
- Make a Pinterest-style diagonal picture montage in C# - C# HelperC# Helper on Draw rounded rectangles in C#
- RodStephens on Display thumbnails for image files in a directory in C#
- RodStephens on Open a PDF file in C#
- Muhammad on Display thumbnails for image files in a directory in C#
- Ziz on Open a PDF file in C#
Archives
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- April 2019
- March 2019
- February 2019
- January 2019
- December 2018
- November 2018
- October 2018
- September 2018
- August 2018
- July 2018
- June 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- February 2014
- January 2014
- December 2013
- October 2013
- August 2013
- June 2013
- December 2012
- September 2012
- July 2012
- June 2012
- November 2011
- May 2011
- April 2011
- February 2011
- December 2010
Categories
- .NET
- 3D
- 3D graphics
- ADO.NET
- algorithms
- animation
- API
- arrays
- attributes
- audio
- books
- C#
- C# programming
- calculations
- challenges
- classes
- clipboard
- coding
- combinatorics
- console
- controls
- cryptography
- curve fitting
- database
- debugging
- dialogs
- directories
- Drag and Drop
- drawing
- drawings
- enums
- Event
- events
- example program
- Excel
- extension methods
- extensions
- files
- finance
- fonts
- formatting
- forms
- fractals
- ftp
- games
- GDI+
- generic
- geometry
- globalization
- graphics
- html
- IDE
- image processing
- inheritance
- interfaces
- internationalization
- internet
- interoperability
- LINQ
- lists
- localization
- mathematics
- memory
- menus
- MessageBox
- methods
- miscellany
- multimedia
- network
- Office
- OOP
- operators
- parsing
- performance
- phone
- PowerPoint
- printers
- printing
- productivity
- programs
- puzzles
- recursion
- reflection
- registry
- regular expressions
- serialization
- settings
- SQL
- stories
- strings
- syntax
- system
- threading
- three-dimensional graphics
- tips
- tools
- transformations
- Uncategorized
- user interface
- variables
- VBA
- web
- Windows Forms programming
- WMI
- Word
- wpf
- XAML
- XML
Meta
Tag Archives: polygon
Clip a line segment to a polygon in C#
This example finds the pieces of a line segment that lie inside and outside of a polygon. It draws the parts of the segment that lie outside of the polygon with a pink background and it draws parts of the … Continue reading
Posted in algorithms, drawing, graphics, mathematics
Tagged algorithms, C#, C# programming, drawing, example, example program, graphics, line segment, mathematics, polygon, segment, Windows Forms programming
Leave a comment
Enlarge a polygon in C#
This example shows how you can enlarge a polygon by a certain distance. For example, you can use it to move the edges of the polygon outward by 10 pixels. The program lets you use the mouse to define the … Continue reading
Platonic Solids Part 1: What are the Platonic solids?
This is the first in a series of posts about the Platonic solids. These posts will show how to find the corners of six Platonic solids: tetrahedron, cube (hexahedron), octahedron, dodecahedron, and icosahedron. Deriving these values requires only algebra and … Continue reading
Posted in algorithms, graphics, mathematics, wpf
Tagged 3D, algorithms, C#, C# programming, cube, dodecahedron, dual, dual solids, example, example program, geometry, graphics, hexahedron, icosahedron, mathematics, octahedron, platonic solids, polygon, polytope, polytopes, regular polygon, regular polytopes, regular solids, solids, tetrahedron, Windows Forms programming, WPF
2 Comments
Draw symmetric compound lines in WPF and C#
I’ve often said that WPF’s unofficial slogan should be, “Twice as flexible and only 10 times as hard.” Drawing compound lines is one of the few places where WPF isn’t twice as flexible. A compound line is one that is … Continue reading
Posted in algorithms, drawing, graphics
Tagged algorithms, C#, C# programming, compound lines, drawing, example, example program, graphics, lines, polygon, Windows Forms programming
Leave a comment
Render polygons and polylines in a WPF program using C#
WPF lets you do all sorts of interesting things that are much harder in Windows Forms applications. However sometimes, as in this example, it makes simple things much harder. (WPF’s slogan should be, “Twice as flexible and only five times … Continue reading
Posted in drawing, extension methods, geometry, graphics, wpf, XAML
Tagged C#, C# programming, draw polygon, draw polyline, draw strings, draw text, drawing, DrawPolygon, DrawPolyline, example, example program, extension methods, geometry, graphics, OnRender, polygon, Polyline, render, rendering, strings, text, Windows Forms programming, WPF, XAML
2 Comments
Fill a polygon with a PathGradientBrush in C#
A PathGradientBrush defines a brush that shades smoothly from a “center point” to specific points along a path. This example fills a hexagon with colors that shade from white in the center to red, yellow, lime, cyan, blue, and magenta … Continue reading
Posted in graphics
Tagged brush, C#, C# programming, Dispose, drawing, example, example program, fill polygon, graphics, PathGradientBrush, polygon, using, using statement, Windows Forms programming
2 Comments
Draw striped lines in C#
You can use the Pen class to draw striped lines. That class’s CompoundArray property stores an array of floats that gives the fraction of the line’s width that is drawn and skipped. For example, the array 0.0, 0.25, 0.75, 1.0 … Continue reading
Posted in drawing, graphics
Tagged C#, C# programming, compound lines, draw lines, drawing, example, example program, graphics, lines, polygon, Polyline, striped lines, Windows Forms programming
Leave a comment
Draw a star with a given number of points in C#
My goal here was to draw a “normal” star where the interior concave angles were located at intersections of lines connecting the exterior convex points. This turned out to be a more interesting problem than I expected. There’s only one … Continue reading
Posted in algorithms, geometry, graphics, mathematics
Tagged C#, C# programming, Cos, draw stars, drawing, example, example program, geometry, graphics, mathematics, polygon, Sin, stars, Windows Forms programming
2 Comments
Draw a non-intersecting star in C#
The following NonIntersectingStarPoints method generates the points needed to draw a non-intersecting star and returns them in an array. // Return PointFs to define a non-intersecting star. private PointF[] NonIntersectingStarPoints( int num_points, Rectangle bounds) { // Make room for the … Continue reading
Posted in drawing, geometry, graphics, mathematics
Tagged C#, C# programming, Cos, draw stars, drawing, example, example program, geometry, graphics, mathematics, non-intersecting star, polygon, Sin, stars, Windows Forms programming
Leave a comment
Draw a star in C#
The following StarPoints method generates the points needed to draw a star and returns them in an array. // Return PointFs to define a star. private PointF[] StarPoints(int num_points, Rectangle bounds) { // Make room for the points. PointF[] pts … Continue reading
Posted in drawing, geometry, graphics, mathematics
Tagged C#, C# programming, Cos, draw stars, drawing, example, example program, geometry, graphics, mathematics, polygon, Sin, stars, Windows Forms programming
1 Comment