The Art of Drawing in Perspective Made Easy: To Those who Have No Previous Knowledge of the MathematicsJames Williams, 1778 - 123 sider |
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angle of 60 apparent places arch avenue bafes black lead lines breadth compaffes corner croſs cubes delineated diſtance therein divided draw BC parallel draw ftraight lines draw lines draw the ftraight eafy equal and parallel equi fame manner fecond feem feen fhall fhew fhould figure finiſhed firft firſt fliders fmall fquare ABCD fquare baſe fquare BEFC ftanding fuch fuppofe furface given number gonal horizon SP houſe interfecting itſelf juſt leffer fquares lefs leſs let ABCD lines drawn lines parallel meet the diagonal muſt neareſt obferver obferver's eye object oblong fquare OPERA parallel to AD pavement Perfon perfpective fquare perſpective plane Plate pleaſe pleaſure point of dif point of diſtance point of fight put a Square pyramids reprefent retina ſee ſeen ſhall ſmall ſpace ſpective ſquare Square Pyramid ſtanding ſteps thefe theſe lines theſe points thoſe tive fquare upright lines whofe
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Side 118 - H may be even with the hobse when you place your eye at Z, and look at the house through the small hole r. Then fix the corners of a square piece of paper with four wafers on the surface of that half of the horizontal board which is nearest the house , and all is ready for drawing.
Side ix - Mount ; where he is reprefented with thofe who were then with him, almoft as large as the reft of his difciples at the foot of the Mount, with the father and mother of the boy whom they brought to be cured : and the mother, though on her knees, is more than half as tall as the Mount is high. So that the Mount appears only of the fize of a little hay-rick, with a few people on its top, and a greater number at its bottom on the ground : in which cafe, a...
Side ix - Raphael's hiftorical pi&ure of our SAVIOUR'S transfiguration on the Mount ; where he is reprefented with thofe who were then with him, almoft as large as the reft of his difciples at the foot of the Mount, with the father and mother of the boy whom they brought to be cured : and the mother, though on her knees, is more than half as tall as the Mount is high.
Side 115 - ML is at D, and the centre of the arch DNL is at c. On the outer side of the arch DNL is a sliding piece, N, (much like the nut of the quadrant of altitude belonging to a common globe) which may be moved to any part of the arch between D and...
Side 115 - DC, to which one part of each hinge is fixed, and the other part to a flat board, half the length of the board ABEF, and glued to its uppermost side.
Side 2 - ... his eye close to the hole ; otherwise he might shift the position of his head, and consequently make a false delineation of the object. Having traced out the figure of the object, he may go over it again with pen and ink ; and when that is dry, put a sheet of paper upon it, and trace it thereon with a pencil : then taking away the paper and laying it on a table, he may finish the picture by giving it the colours, lights, and shades, as he sees them in the object itself; and then he will have...
Side 123 - If a pane of glafs, laid over with gum water, be fixed into the arch, and fet upright when dry, a perfon who looks through the hole may delineate the objctis upon the glal's which he fiers at a diftance through and beyond it, and then transfer the delineation to a paper put upon the glafs.
Side viii - ... in their faces or bare arms. And if he were in a boat, at fome diftance from the land, he could not perceive the eyes and beaks of fowls on the fliore.
Side 118 - N and 0 till you bring the intersection of the threads at P directly between your eye and the point q : then put down the arch flat upon the paper on the board, as at ST, and the intersection of the threads will be at W. — Mark the point W on the paper with the dot of a...