qr code generator vb net codeproject C HAPTE R 4 INTRODUCING THE .NET MICRO FRAM EWORK BA SE C LAS S LIBRARY in visual basic

Paint QR Code 2d barcode in visual basic C HAPTE R 4 INTRODUCING THE .NET MICRO FRAM EWORK BA SE C LAS S LIBRARY

Now that you have a method capable of doing 3D Catmull-Rom interpolation, let s use it to generate multiple points of a spline. Given the four base points v1, v2, v3, and v4 in 3D space, the following method returns a list of 20 points on the spline between v2 and v3, with the first point in the returned list being v2. private List<Vector3> InterpolateCR(Vector3 v1, Vector3 v2, Vector3 v3, Vector3 v4) { List<Vector3> list = new List<Vector3>(); int detail = 20; for (int i = 0; i < detail; i++) { Vector3 newPoint = CR3D(v1, v2, v3, v4, (float)i / (float)detail); list.Add(newPoint); } return list; } Increase/decrease the detail value if you want to add/reduce the number of points calculated between v2 and v3 (or better, make it an additional argument of the method).

Listing 26-13 demonstrates the use of some of these methods. Listing 26-13. Using the Math Class using System; class Listing 13 { static void Main(string[] args) { double myDouble = 123.456; Console.WriteLine("Ceiling: {0}", Math.Ceiling(myDouble)); Console.WriteLine("Floor: {0}", Math.Floor(myDouble)); Console.WriteLine("Max from {0}, {1}: {2}", 10, 20, Math.Max(10, 20)); Console.WriteLine("Min from {0}, {1}: {2}", 10, 20, Math.Min(10, 20)); Console.WriteLine("Round: {0}", Math.Round(myDouble)); Console.WriteLine("Truncate: {0}", Math.Truncate(myDouble)); // wait for input before exiting Console.WriteLine("Press enter to finish"); Console.ReadLine(); } } Compiling and running Listing 26-13 produces the following results: Ceiling: 124 Floor: 123 Max from 10, 20: 20 Min from 10, 20: 10 Round: 123 Truncate: 123 Press enter to finish

When a user control is closed, it needs to notify MainForm so that the control can be gracefully removed from the list of active user controls. To do this, WinPart declares an event and implements a Close() method: public event EventHandler CloseWinPart; protected void Close() { if (CloseWinPart != null) CloseWinPart(this, EventArgs.Empty); } This way, the UI code in the user control can call the Close() method to close the user control. Raising the CloseWinPart event tells MainForm to remove the control from the active list and dispose the user control.

CAUTION Lazy has implications for multithreaded scenarios. Some of the constructors for the Lazy type have an isThreadSafe parameter (see MSDN for more details of this: http://msdn.microsoft.com/en-us/library/ dd997286%28VS.100%29.aspx).

Note In order to use the wsdl.exe and xsd.exe command-line tools from any directory location on your

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In the following code, OtherClass derives from SomeClass but hides both its inherited members. Note the use of the new modifier. The code is illustrated in Figure 7-5. class SomeClass { public string Field1 = "SomeClass Field1"; public void Method1(string value) { Console.WriteLine("SomeClass.Method1: } // Base class