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libraries for its infrastructure. Also, at the time of this writing, unlike the ASP.NET AJAX installable .Msi package, the toolkit is simply shipped as a ZIP file containing the source code and therefore requires a little work before it s ready to use. You can download the ASP.NET AJAX Toolkit at http://ajax.asp.net/downloads. After unzipping the files to a folder such as AjaxToolKit, you can add the controls to your Visual Studio 2005 toolbox. First create a new tab in the toolbox, and name it something similar to ASP.NET AJAX Control Toolkit. After that, right-click the new tab, and select Choose Items from the context menu. At that point, simply browse to the designated folder to which you had extracted the compressed files, and you ll find a DLL named AjaxControlToolkit.dll in a subfolder of the Bin folder. Selecting this file populates the controls in the new tab created in your toolbox as shown in Figure 7-1. You are now ready to use these controls in your ASP.NET AJAX-enabled web application.

Figure 15-17. Smoothing, straightening, and optimizing curves can have a profound effect on download times. You are most likely looking at the graph and thinking, Wow, I am going to start optimizing all of my vector shapes! Not so fast. Each of the three methods presented did a good thing and a bad thing. They did indeed reduce the bandwidth load. However, they also introduced distortions into the image. If you are happy with the distortions, fine. If you aren t, then you might want to consider doing the optimization manually, by selecting the shape with the Subselection tool and manipulating the shape and the points. So, why was there such a drop in the graph between the object in frame 1 and its counterpart in frame 4 Remember that vector nodes require bandwidth. You removed a few of them using the Optimize Curves dialog box, which accounts for the drop in required bandwidth. If you import vector artwork from outside sources, such as Illustrator files, you may find shape optimization quite challenging. Obviously, it depends on the intricacy of the artwork, but industrial-strength tools like Illustrator CS5 naturally have more complex features than the drawing tools provided by Flash. When Flash imports vectors from other tools, it does its best to translate those anchor points into the language it uses internally.

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This can lead to some rather interesting missteps between Illustrator CS5 and Flash CS5. You can see this in Figure 15-18. The image on the left is the image, on the Illustrator CS5 page, as it was drawn in Illustrator CS5 using the Extrude filter and a couple of effects to create the splatter. The whole thing is vectors. The image on the right is the same image on the Flash stage. The top version is the result of importing the AI file into Flash. The bottom version is one saved in Illustrator as an FXG image. The difference is, when the FXG file was created, Illustrator rasterized the extrusion, which sort of defeats the purpose. Your take away from this is that all vectors are not equal, and, in certain instances, something could become lost in translation.

Error checking is an important part of all types of coding Not only do you need to get the commands, logic, and functionality of the program correct along the desired path of execution, you should also check for problem conditions along the way Anticipating potential problems will make your code more robust and resilient The function that is included here is called alert since it notifies you of any issues A function is something like a mini-program within the main code, and it can be called like any other regular command A good use for a function is to reduce duplication of code if you re going to perform a given task many times throughout the script The alert function, like all others, needs to be included in the code (that is, defined) prior to it being called by the script.

Figure 15-18. Just because Illustrator CS5 draws vectors, don t get lulled into complacency. Just be mindful of the pipe. If elaborate vector artwork seems to weigh more than you would expect, consider exporting it from the original application as a bitmap or FXG file and compare file sizes. If you don t have the original application, import the artwork into Flash, situate it on the timeline of a temporary stand-in FLA, and then use File Export Export Image to select a suitable raster format. Aren t vectors supposed to be smaller Generally speaking, yes. But every rule has its exception, and it goes both ways. Giulia Balladore (www.juniatwork.com), a self-taught artist featured on www.FlashGoddess.com, produces jaw-droppingly beautiful artwork directly in Flash. Her vector drawings rival the sort of detail that normally requires a camera and meticulous studio lighting. And yet, because she works in Flash and optimizes her vectors, images like Sole (see Figure 15-19) can be resized in the browser without ever getting pixelated. And the depicted SWF weighs a minuscule 23KB!

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