レオナルドが《最後の晩餐》に想定していた建築空間、及びその「基準線」（その1）：透視図のある先行研究9編についての調査

When Leonardo drew the ceiling grid etc., it is thought that he envisaged the architectural space and prepared reference lines as the basis for the grid etc.. These lines are hereafter referred to as ‘reference lines’. In this paper, nine previous studies including perspective drawings are investigated. As a result, it was clarified how the perspective drawings in the previous studies were drawn, what the size of the architectural space in the pictures was like, etc. It was also confirmed that none of the previous studies drew a ‘reference line’. The perspective drawings in the previous studies are not ‘reference lines’.