The monograph is dedicated to 3D technology and its main features, including 3D modelling and virtual reality. It introduces a novel boundary approach method utilized for creating geometric objects. These objects serve as the foundation for modelling arbitrary, real, or imaginary entities using a 3D modelling program. The book elucidates the fundamental primitives, transformations, and visualization techniques crucial for processing, combining, and crafting diverse and realistic 3D objects and scenes. Additionally, programming codes are provided for a comprehensive understanding of these concepts. The 3D objects generated, through the newly presented stereoscopic system, find applications in various fields, such as training in stereometry, the development of sophisticated 3D games, and the study of cardiac health through virtual reality.