摘要：The drawing represents the practical aspect of the Descriptive geometry syllabus aiming at determining the shades and shadows of objects and bodies in various presentation techniques,such as the Monge and axonometric projections and the perspective. The basic aim of the programme is to introduce shades and shadows to students. The programme also aims at improving the knowledge of Descriptive geometry and at acquiring the notion of space. Shadows and shades help achieving these aims,for their construction involves a series of different descriptive geometrical procedures. The students prepare their drawings in the linear black-and-white technique using hard paper in DIN A3 format. The surface of the shades is marked in letratone or letratone-resembling techniques. Depending on their wishes and capabilities,students may also decide for Indian ink or,in the last years,the computer the role of which,however,is reduced to the replacement of the pen. The following illustrative example shows a shadow drawing typical of the Monge projection. The remaining drawings shed light on procedures that need to be carried out in order to obtain the results aimed at. : The shades and shadows on the candlestick are composed of a cone and a cylinder. The process comprises six descriptive geometrical procedures,i.e. flat-surface construction with different data,straight-line flat-surface perforation,straightline cone perforation,section between the cone and the flat surface,section between the cylinder and the flat surface,section between the two flat surfaces. Shadowing is part of the second-semester practical course. The result,which,also according to the students,is a highly aesthetic product,is often included in the portfolio prepared by the students before their graduation. The course helps the students improve their perception of space and understand the principles of shadow constructions which can be applied in other areas of their expertise as well.
其他摘要：predstavitvenih tehnikah anje prostorske predstave,za kar so sence odlièen pripomoèek,saj konstrukcija senc vsebuje niz razliènih opisno-geometrijskih postopkov. Risbe izdelujejo študenti v okviru vaj v èrtni èrnobeli tehniki na trd papir formata DIN A3.
