Computer-aided drawing process.

摘要

The invention relates to a method of producing drawings with the aid of a computer. The method comprises the following steps: 1) - defining and recording in memory a data structure describing any drawing at any step of its creation in the form of a planar map, that is to say a set of surfaces (F), each surface being delimited by one or more contour(s) carried by edges of curves of the said drawing; the said planar map being associated with a tree for inclusion of the contours; 2) - proceeding with the actual production of the drawing by carrying out operations of insertion, of erasure and of colouring in the initially blank planar map; - the operations of insertion and of erasure consisting in inserting and/or erasing curves and/or elements of curves until the desired drawing is obtained; - the colouring operations consisting in colouring one or more surfaces forming the drawing. 3) - displaying the drawing and proceeding with its updating in step with the various operations. Application to computer-aided drawing or computer-aided design. <IMAGE>