Analysis Of AutoCAD Architectural Engineering Design Plan

The software DOE-2 is appointed as a standard software to analyse the energyconsumption of the civil house at present. This paper aims at to analyse the 2-D AutoCADmap of engineer architecture design plan and then to form 3-D geometry model which isneeded during the operation of DOE-2 analyse. This paper is consisted of nine chapters. In the second chapter we introduceObjectARX, after comparing several AutoCAD developing tools we select ObectARX todevelop the program, then keep on the eyes on the principle ObjectARX re-developmentmust obey. In the third chapter the construction of AutoCAD database is introduced, anAutoCAD design map is a database of graphic entities essentially. In this chapter we firstdescribe how graphic entities are recorded in the database, then didcuss the containers thegraphic entities are put in such as tables. On the base of two chapters discussed we analysehow to use ObjectARX to access the AutoCAD database——abtaining and modifying thedatas of the grapic entities' and how users co-reaction with AutoCAD to the use there-developed software. It's the emphasis in this paper to analyse the graphic entities in the design map and toconstruct the objects in the arctecture using the software method of Object-Orientedprograming and at last to distinguish and form the arctecture's spaces applying thewidth-first-searching of the topographic map. All this include three aspects as following: Firstly, how to use the Object-Oriented method to manage the data of the entities inthe AutoCAD map and in the arctecture; The second aspect concerns on analyse the map of the arctectural plane design. Herethe problem is devided into two subproblems. The first subproblem is about how to restorethe information of the walls that are devided by the projection of the windows or doors'hole, the second subproblem surrounds on how to distinguish and form the arctecture'sspaces——called subdevision of the topographical map. For the first subproblem twosoftware developing methods are introduced: From the top to the bottom analyse method IIIand from bottom to top method. The two medthod have advantage and disadvange whenused in analysing the map separately, after comparison the methods' advantage anddisadvantage which method should be adopted in the actually development is clear. Thesecond subproblem is about how to distinguish the subdevision of the map which is acritical step during the progress of restore the 2-D design map to 3-D model, there are twoalgorithms can be used usually. The first algorithm is based on the sustaining tree of themap shaped during Width_First_Searching the map, visit the sustaining tree thendetermine the subdivision(we call the method BST); the second keeps it's eyes on how tochose a path when arrived at a node, namely after select a edge how to chose it's follow toconstruct a loop that encloses a subdivision, here the principle is to sort the visible edgesof the node according to the rotating angle of the edges(we call this method RRAVE).Compare the two algorithms, combine the strongpoint of them and arrive to a newcompositive method to analyse the subdivision of the map, the compositive method usesRRAVE to recognise the map's subdevision after finding out the subdevision using BST. The last aspect is about how to form the 3-D model, that is how to use thesubdevision distinguished to format the spaces of the arctecture designed in the map andthe relationship of the spaces. The three aspects discussed above are the emphsis of this paper and are arranged inthe chapter from five to eight separately. At the end of this paper we arrang a chapter todiscuss the actual works we have done in the program item which embody the content ofthe chapters introduced ahead.