ASP.NET PDF Viewer using C#, VB/NET

In this chapter, you have looked at the development of the service layer containing business logic. You have seen how the methods of the service layer can be made transactional by using AOP. You also have also seen how AOP classes can be created to enforce security guarantees upon the service layer without influencing its design. In the next chapter, we will finally build our presentation layer the web application upon the foundation provided by the service layer created in this chapter.

winforms pdf 417 reader, winforms qr code reader, winforms upc-a reader, winforms data matrix reader, winforms ean 128 reader, winforms ean 13 reader, c# remove text from pdf, replace text in pdf c#, winforms code 39 reader, itextsharp remove text from pdf c#,

For example, you could use two textures for the sky: one for its background and the other to draw a second layer effect, such as moving clouds One of the disadvantages of the skydome is that it has a much more detailed mesh than a skybox, as can be seen in Figure 13-3 In your game, you ll use a skydome to draw the scene s horizon, as you ll want to animate it The skydome you ll use is a conventional 3D model, previously made in a modeling tool and processed by the Content Pipeline This allows the sky model to be loaded and handled through XNA s Model class Note that it is also possible to generate a sky model dynamically, instead of loading it Now you ll create the class to load, update, and draw the sky model: the SkyDome class.

n the preceding chapter, you looked at the issues around building the service layer for our application. In this chapter, we start to build the presentation layer of our application as a web application.

You should create the SkyDome class inside the Shapes folder..

The standard architectural model for building a web application now is the Model View Controller (MVC) pattern, shown in Figure 6-1. I will present this briefly before embarking on a discussion of the specific implementations that are available to you when building a Spring application.

Because the skydome is an XNA Model, you simply use the content manager to load it. Following is the code for the Load method of the SkyDome class: public void Load(string modelFileName) { model = Content.Load<Model>(GameAssetsPath.MODELS PATH + modelFileName); }

The model is the domain-specific representation of the data that is involved in your application. Our entity beans and the service layer form the model in a Spring application; your presentation layer is merely used to manipulate the data in the model. The view is a representation of the data in the model. This is not to say that there is no other data in the view it may well contain transitory data and implementation data but that

Every time the Update method of the sky is called, you need to move its center position to the camera s position, ensuring that the camera remains positioned in the center of the sky. You can also rotate the sky model very slowly over the world s y axis, giving the impression of a moving horizon around the player. Following is the code for the Update method of the SkyDome class: public override void Update(GameTime time) { BaseCamera camera = cameraManager.ActiveCamera; // Center the camera in the SkyDome transformation.Translate = new Vector3(camera.Position.X, 0.0f, camera.Position.Z); // Rotate the SkyDome slightly transformation.Rotate += new Vector3(0, (float)time.ElapsedGameTime.TotalSeconds * 0.5f, 0); base.Update(time); }

the main purpose of the view is to accurately represent the data in the model and reflect changes to that data. The controller updates the model in reaction to events received from the user, and causes the appropriate view for the model to be displayed or updated. It is entirely possible to build an MVC application by using ordinary Java EE components. For example, you could build the model by using JDBC and beans (or even use ResultSet objects directly). You can build the views from JSPs and servlets, and the controllers from servlets. Although it is possible to build an MVC application by using traditional Java EE technologies, it is not an edifying experience. None of these components establishes a clean boundary of responsibility, so the distinction between controller and view, for example, is often lost in large applications with the corresponding increase in code complexity and loss of clarity. Instead, Spring provides its own MVC frameworks: Spring MVC and Spring Web Flow (the two are closely related).