<<PREVIOUS | TABLE OF CONTENTS | CONTINUE >> By knowing the field of view (FOV) and the dimension of the projection plane, we can calculate the angle between subsequent rays and the distance between the player and the projection plane. These steps are illustrated inFigure 11 (Many books define these last two values arbitarily, without telling […]

<<PREVIOUS | TABLE OF CONTENTS | CONTINUE >> RAY-CASTING STEP 2: DEFINING PROJECTION ATTRIBUTES Now that we have the world, we need to define some attributes before we can project and render the world. Specifically, we need to know these attributes: 1. Player/viewer’s height, player’s field of view (FOV), and player’s position. 2. Projection plane’s dimension. […]

<<PREVIOUS | TABLE OF CONTENTS | CONTINUE >> Before we begin, let’s examine the limitation of ray casting. LIMITATIONS OF RAY-CASTING Ray casting is fast because it utilizes some geometric constraints. In most cases, walls are always at 90 degrees angle with the floor. (Note that we are not talking about the angle between walls and […]

<<PREVIOUS | TABLE OF CONTENTS | CONTINUE >> RAY-CASTING AND/VS RAY-TRACING Like ray-casting, ray-tracing “determines the visibility of surfaces by tracing imaginary rays of light from viewer’s eye to the object in the scene” (Foley 701). From both definitions, it seems that ray-casting and ray-tracing is the same. Indeed, some books use both terms interchangeably. From […]

TABLE OF CONTENTS | CONTINUE >> INTRODUCTION There has been an explosive growth in the personal computer market in the past few years*. This growth, in part, is generated by excitement and curiosity for multimedia titles. This project is an attempt to obtain some knowledge and experience on the multimedia title development process. Specifically, we […]