Abstract:Digital technologies are playing important roles in determining the final effects of buildings, and in shifting design and construction processes of architecture directly. In many current works, the overall form, individual components, openings and construction details of their surfaces are generated by parametric methods, and then are materialized (to make them buildable with material). With the development in building techniques, environmental factors, such as lighting, energy and air, are gradually involved into the design process, and become new sources in generating building surface. By means of comparative study on three cases, this paper presents how these factors are integrated or transformed into morphological and constructional consideration in parametric surface design, and discusses fundamental principles of performance-based generation of openings in parametric surface.