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Location-based entertainment (LBE) is a catchall term for computerized entertainment that the customer goes to, rather than purchasing and taking home Taken broadly, location-based entertainment could include arcades, but the term is really used to mean something larger and more specialized One kind of LBE is the BattleTech Centers These are storefront operations that players come to, usually in small groups The BattleTech Center consists of a number of enclosed capsules that simulate the driver s seat of a kind of tank; the players machines are all networked together, and they can play cooperatively or competitively as they choose Another kind of LBE is a theme park attraction with a large computerized component This kind of equipment is highly specialized, often unique, and extremely expensive Frequently, it has been commissioned for a specific location A good example is the ride at the Luxor Hotel in Las Vegas, which involves sitting in a bank of seats mounted on hydraulic pistons while watching a movie The sudden swoops and jerks of the seats are timed to accompany the events taking place in the movie The customer for the LBE experience is, of course, the end user, but the customer for the equipment itself is the company that is running the attraction What they want to deliver is a highly intense experience in a short amount of time that they can move a lot of people through essentially, an electronic roller coaster The owner of an LBE has to balance a number of factors The experience can t be too short, or the player won t feel he s gotten his money s worth; it can t be too long, or the line will move too slowly and the people waiting will get frustrated It has to cost a lot because the initial investment and maintenance costs are so high, but not so much that people don t come And, of course, it has to be in a convenient location In my experience, most LBEs are extremely action-packed, fast-paced experiences This appeals to the kids who are their primary customers, but it has a secondary, pragmatic value If you re going to offer an entertainment that lasts, say, ten minutes at the most, it needs to be packed with thrills every second of the way It should be almost exhausting so intense that you wouldn t even want to be in it any longer than that That way the customer leaves feeling certain he s gotten his money s worth.

switch (_selectedMode) Draw image in { client window case DisplayMode.StretchToFit: // Fill the entire window with the image g.DrawImage(photo.Image, this.DisplayRectangle); break; case DisplayMode.ActualSize: break; } // Update the status bar. sbpnlFileName.Text = photo.FileName; sbpnlFileIndex.Text = String.Format("{0:#}/{1:#}", _album.CurrentIndex+1, _album.Count); sbpnlImageSize.Text = String.Format("{0:#} x {1:#}", photo.Image.Width, photo.Image.Height); statusBar1.ShowPanels = true; } else { // Indicate the album is empty e.Graphics.Clear(SystemColors.Control); statusBar1.Text = "No Photos in Album"; statusBar1.ShowPanels = false; } statusBar1.Invalidate(); base.OnPaint(e); }

6 0

Your application should now compile and run. Load an image, and it should look similar to figure 7.2 shown at the start of this section. The following points are worth noting in our implementation of the OnPaint method. The OnPaint method takes a single PaintEventArgs parameter. We did not discuss this parameter in chapter 6, but a brief mention is warranted here, and an overview is provided in .NET Table 7.3. This class is similar in purpose to the DrawItemEventArgs class presented in chapter 4. The two classes are similar, except that the Paint event and PaintEventArgs class are used for controls, while

the DrawItem event and DrawItemEventArgs class are used for drawing components or other objects within a control. The Graphics.DrawImage method is used to draw the current photograph in the window. The image is drawn into the area represented by the Form.DisplayRectangle property rather than the ClipRectangle area provided by the PaintEventArgs parameter. This is because ClipRectangle only represents the area that requires updating, which may not be the entire window. In our case, we need to redraw the entire image to account for changes in the display mode or the size of the drawable area. When an empty album is present, we draw over any image data that may still be present in the window. The Graphics.Clear method performs this task by painting a single color onto the form. The SystemColors class provides access to the user-definable desktop colors, with the Control property representing the default background color for 3-D controls. Our application has now taken a step backward. The Stretch to Fit option by definition distorts the image displayed, so the behavior we have here is the same as we saw before. In addition, we have lost our nice border around the image, and resizing the form no longer works. The border is simply cosmetic and will be addressed in due course toward the end of this chapter. This distortion problem we will address immediately. The resize issue can wait until after the next section.