The contribution addresses the constructions of central and parallel projections of regular surfaces which can be regarded as a subarea of descriptive geometry. My aim is to increase the interest of students in classical and descriptive geometry primarily through 3D computer modeling. I have been seeking to establish a stronger connection between descriptive geometry and its practical applications and to extend descriptive geometry with knowledge of computer graphics and computer geometry. In order to provide insight into more complex geometric problems and to increase the interest in geometry, I have integrated 3D computer modeling in my lectures and seminars. Geometry is a necessary component of many engineering processes such as the development of innovative graphics software or the design of complex industrial and architectural structures. My aim is to show that the principles and knowledge of classical and descriptive geometry are the stepping stones for solving tasks in practice.