Common use of Basic Concepts Clause in Contracts

Basic Concepts. SurfMaster uses 3D wireframe models for representing the design created. Wireframe models consist of definition curves that define the edges of surfaces or segments. Almost all AutoCAD linear entities (i.e., lines, 3D polylines, 2D normal, splined or fitted polylines, splines, circles, ellipses, circular and elliptical arcs) can be used as definition curves. All of these entities are approximated using 3D polylines that consist of straight segments. Thus, the surfaces can be approximated with the sequence of triangles. To prevent the loss of information during curve approximation, center marks are added to all circles, ellipses, circular and elliptical arcs. Once decomposed into a sequence of neighboring triangles, the surface can be unfolded triangle by triangle and placed onto the XOY plane of the AutoCAD World Coordinate System. In this way, it is possible to produce a cutout which corresponds to its parent surface. Apart from two flattened definition curves, the cutout also contains two linear edges. The first of these edges is considered the cutout’s baseline. The baseline and the second line are also drawn between the surface definition curves in 3D space. Although SurfMaster does not retain any internal information about definition curves, surface cutouts and their definition curves, surface start marks are placed both on the surface and on the cutouts making it easy for the user to obtain this information if needed. Original surface SurfMaster interpretation Wireframe model