Second grade perspective, (theory and practice) : specially prepared for the use of art students (1893)
Dennis, H. J · London : Baillière, Tindall, and Cox · leaf 18
parallel to the picture, it is obvious they must likewise be parallel to the XXIV. Base of cone of rays is a section of the cone of rays made by picture-plane, for if a plan of the lines be obtained, they would appear in ‘he picture-plane. It is the limit of our field of vision. one line parallel… … plane can have but one direction, viz., vertical, as ABC D, Fic. 11. Draw three straight We may now imagine the vertical plane A B C D revolved upon A B lines from A to meet the as an axis 60 as to occupy the profile of the vertical plane at points B C D. position AB EF, or ABGH, it would then be…
Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
