AUTOMATIC MODELING OF THE SURFACES OF THE EQUAL SLOPE IN AUTOCAD SYSTEM THROUGH LANGUAGE AUTOLISP

Abstract

Graphical computer modeling is a real possibility of solving problems on the formation of surfaces by a kinematic method. It is due to the presence of automated design systems, such as MathCad, Mathematika, AutoCad, etc. The advantage of the AutoCad system is the presence of the built-in language of functional AutoLisp. Having a wide range of mathematical functions and functions for drawing graphic objects, the AutoLisp language allows you to write a program for drawing shells of any complexity, in a particular case - shells of the same ramp on the elliptical plane, the surface of the involute helicoid, and then transferring the results to the AutoCAD environment. Playing objects in slow motion makes it possible to compose mini-films about the formation of surfaces. The image of graphical constructions in three-dimensional space using the AutoCAD color palette enhances the expressiveness of the image of surfaces and their elements. The aim of the study is the possibility of modeling the surface of the equal slope ramp on an elliptical plane, carried out by its gradual drawing in a slow dynamic mode with the creation of a mini-film that allows the surface to be displayed on the monitor screen

Keywords

• equal slope surface
• modeling
• AutoLISP
• AutoCAD
• shell
• shaping
• layer
• generatrix
• developable surface
• elliptic plane. Surfaces of the equal slope are used in architecture since ancient times
• AutoLISP
• AutoCAD