Abstract. The article provides detailed and accurate design basis for building plan, studies a new theory and technology for the designers by researching from the spatial essentials to mathematically logic of spatial configuration and by using the method of spatially quantitative description, such as convex space, all-line visibility map, etc. The west part of national art gallery in Washington DC and Shanghai art gallery are taken as examples for analyzing spatially variable visibility and describe local space configuration and configurational relationship.
Spatial configuration of galleryThe main function of the art gallery is to inform the public of new knowledge, not only by providing valuable material and cultural experiences on the certain places or certain times, but also by paying attention to the space for public assembly. Art gallery, generally as a clear organizational structure, is composed of the exhibition hall devoted to display various art forms such as painting, sculpture, installation, furniture and multimedia, etc, the art education area, the management space or office department and artwork store. On social functionally, art gallery talks about stories of history, environment and humanities in a narrative way. Artwork, to a certain extent, is a microcosm of human life, the layout of art gallery often changes according to continuously changing exhibition themes, the space configuration will also change, different spatial configuration forms a specific person assembled mode and different interactive mode. Some studies posit concrete discussion about conceptual shifts during design with particular emphasis on the designer's understanding of what kind of configuration the particular design is (Peponis, Bafna et al. 2015) [1] . Similar to a small social community, art gallery is the architecture about the spatial organization with the precise organizational structure and has a great difference from other building types. Tzortzi, Kali [2] argued that it is possible to distinguish between art galleries that intend to convey a pre-given meaning and reproduce information and art galleries that aim at creating fields of possible meaning and producing a richer spatial structure. Art gallery plan, as a carrier of narrative function, on one hand, to guide visitors and form visit flow line, however, different visitors will have different flow lines, because the different choice concerning to route sequence and the exhibit we had encountered and the impression which we have been experienced in our memory; on the other hand, art gallery plan can give visitors indications, so that visitors who are familiar with the local area in the visiting process can understood within a larger overall environment as soon as possible and are unlikely to lost in larger galleries. J. Peponis [3] provides overall statement by offering a computational description and provisional statistical profile of properties of building layouts that contribute to making them intelligible.Yoon Kyung Choi [4] mentioned in his study: "art ga...