Design And Realization Based On XML Special Equipment Two-dimensional Vector Graphics Class Libraries

In the special equipment diagram management, using tradition cartography way and the information transmission method management unavoidably felt lacks the ability to do what one would like. Therefore, the advanced vector graph technology and the special equipment diagram management will unify, the development special equipment two-dimensional vector chart class storehouse, and further will develop correspondingly draws up software to have the vital significance. This article revolves to use the GDI+ technology development two-dimensional vector chart class storehouse to launch amore thorough discussion.Designing and developing the class libraries, the primary intention is the solution special equipment graphics drawing is simple, the form unification and the information sharing question. In the class libraries, the user take the text, the straight line, the curve, the circular arc, the rectangle, the ellipse, fan-shaped and so on the vector graph element as a foundation, constructs the graph part by the level, passes through to the graph part migration, the combination, revolves, puts shrinks, to is uneven, splicing, the duplication, glues and so on the operation, finally produces the integrity the special equipment diagram, and its preservation for graphics element libraries. The class libraries realization text format memory vector graph, reduced the storage capacity, speeds up retrieval speed.Through profits from the domestic and foreign each kind of vector cartography to control and the vector graph standard, the union pressure vessel, the industry pipeline, the hoisting machinery and soon the special equipment diagram characteristic, carries one numerates, is abstract, the analysis, the induction, formed a group to suit the plan special equipment diagram the foundation graph class libraries. It including nine foundations class, respectively is: View class, page class, graph unit class, text unit class, shape unit class, line unit class. Element class, unit group class and layer class. The class libraries realized the text unit class, the shape unit class, the line unit class, the element class four kind of basic graphs unit class migrations, the combination, has put shrinks, to is uneven, splicing, the duplication, glues and so on the method, and realization to four kind of graphs units grouping and lamination management, moreover, the graph view class contained many pages entities, the realization specific XML document inducts and derives the method. The class libraries production special equipment graphics and a element libraries, by saves based on the XML element characteristic data text format, true realization graph vector.Based on the class libraries development drawing software operation simple, running highly effective, the function is practical, already obtained the Qilu Petrochemistry company user's authentication.