Elementary linear perspective of form and shadow ... Complete in itself ... For draftsmen, artists, and industrial drawing courses in preparatory and high schools, etc. In two parts.. (1891)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 89
respect to the perspective plane. First. It follows directly from the rule (108), that all lines whichare parallel to the perspective plane have no vanishing point.Hence their perspectives will be parallel to themselves. That is,the perspectives of vertical lines, for example, will be vertical, as… … Fig. 42. Second. It also follows from (108), that all horizontal lines navetheir vanishing points in the horizontal line, or horizon (103). 112. In particular, among horizontal lines, we notice those whichare also perpendicular to the perspective plane; and those whichmake an angle of 45° with the…
Perspective · Mechanical drawing
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