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You can think of an ellipse as being a squashed circle. If you were to take a circle and stretch it to fit it into a rectangle, it would become an ellipse. In addition to surface and color, the ellipse function takes a Rect-style object that the ellipse should fit in to. It also takes a width parameter, which is used just like rect and circle. Listing 4-12 draws an ellipse that fits in a rectangle stretching from the top-left corner of the screen to the current mouse position. Listing 4-12. Drawing an Ellipse import pygame from pygame.locals import * from sys import exit from random import * pygame.init() screen = pygame.display.set_mode((640, 480), 0, 32) while True: for event in pygame.event.get(): if event.type == QUIT: exit() x, y = pygame.mouse.get_pos() screen.fill((255,255,255)) pygame.draw.ellipse(screen, (0,255,0), (0,0,x,y)) pygame.display.update()

// creates a connections then executes the given command on it let opener commandString = // read the connection string let connectionSetting = ConfigurationManager.ConnectionStrings.["MyConnection"] // create the connection and open it let conn = new SqlConnection(connectionSetting.ConnectionString) conn.Open() // excute the command, ensuring the read will close the connection let cmd = conn.CreateCommand(CommandType = CommandType.Text, CommandText = commandString) cmd.ExecuteReader(CommandBehavior.CloseConnection)

[Test] public void TestGetProductsByCategory() { ArrayList products = ProductData.GetProductsByCategory(categoryID); Assert.IsNotNull(products, "GetProductsByCategory returned a null value, gasp!"); Assert.IsTrue(products.Count > 0, "Bad Products count, gasp!"); } } } Now everything should build and run successfully. You should add some more tests (both positive and negative) to the ProductTests.cs class, as shown in Listing 13-25. Listing 13-25. More Tests for ProductTests.cs #region Using directives using System; using System.Collections; using System.Collections.Generic; using System.Data; using System.Data.Odbc; using System.Text; using NUnit.Framework; using DataLayer; using BusinessLayer; #endregion namespace TestLayer { [TestFixture] public class ProductTests { private StringBuilder connectionString; private int productID; private int categoryID; private string productName; private decimal price; private int quantity; public ProductTests() { productName = "Bogus Product"; price = 10.00M; quantity = 10; categoryID = 4;

The arc function draws just a section of an ellipse, but only the edge; there is no fill option for arc. Like the ellipse function, it takes a Rect-style object that the arc would fit into (if it covered the entire ellipse). It also takes two angles in radians. The first angle is where the arc should start drawing, and the second is where it should stop. It also takes a width parameter for the line, which defaults to 1, but you can set it to greater values for a thicker line. Listing 4-13 draws a single arc that fits into the entire screen. The end angle is taken from the x coordinate of the mouse, so if you move the mouse left and right it will change the length of the arc. Listing 4-13. Arc Test import pygame from pygame.locals import * from sys import exit from random import * from math import pi pygame.init() screen = pygame.display.set_mode((640, 480), 0, 32) while True: for event in pygame.event.get(): if event.type == QUIT: exit() x, y = pygame.mouse.get_pos() angle = (x/639.)*pi*2. screen.fill((255,255,255)) pygame.draw.arc(screen, (0,0,0), (0,0,639,479), 0, angle) pygame.display.update()

Listing 11-11. Invoking the WCF Service open System let main() = use client = new GreetingServiceClient() while true do printfn "%s" (client.Greet("Rob")) Console.ReadLine() |> ignore use client = new GreetingServiceClient() printfn "%s" (client.Greet("Rob")) Console.ReadLine() |> ignore do main() Listing 11-12 is an example of a generated configuration file that has had certain things removed from it to make the sample run more smoothly. The security settings have been removed because these can cause the example to fail if it is run on a computer disconnected from its domain controller (a common case for programmers on the move!). Also, one of the two generated endpoints has been removed, so there is no need to specify an endpoint in the code. Listing 11-12. The Configuration File for Invoking the WCF Service <configuration> <system.serviceModel> <bindings> <wsHttpBinding> <binding name="WSHttpBinding_IGreetingService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /> </binding> </wsHttpBinding> </bindings>

A call to pygame.draw.line will draw a line between two points. After the surface and color, it takes two points: the start point and the end point of the line you want to draw. There is also the optional width parameter, which works the same way as rect and circle. Listing 4-14 draws several lines from the edges of the screen to the current mouse position. Listing 4-14. Line Drawing (drawinglines.py) import pygame from pygame.locals import * from sys import exit