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3D Graphics Rendering Cookbook
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To debug a graphical application, it is very helpful to be able to navigate and move around within a 3D scene using a keyboard or mouse. Graphics APIs by themselves are not familiar with the concepts of camera and user interaction, so we have to implement a camera model that will convert user input into a view matrix usable by OpenGL or Vulkan. In this recipe, we will learn how to create a very simple yet extensible camera implementation and use it to enhance the functionality of examples from the previous chapter.
The source code for this recipe can be found in Chapter4/GL01_Camera
.
Our camera implementation will calculate a view matrix and a 3D position point based on the selected dynamic model. Let's look at the steps:
Camera
class, which will represent our main API to work with the 3D camera. The class stores a reference to an instance of the...