. Cottage, lodge, and villa architecture. the point h, where it cuts the jjperpendicular from the centre o, is the vertex of the pyramid, which ijbeing joined with a, b, and c, gives the required representation. Only eone side of it is seen when the point of view is opposite the middle of that side. If a b c, fig. 3, were the plane of the base of a frustrum of a pyramid, and thedotted lines abc its top, its perspective would be found by putting the small trianglein perspective, as in fig. 4, and raising per-pendiculars until they would meet the linesfrom A b and c to H, and then joining thesep
. Cottage, lodge, and villa architecture. the point h, where it cuts the jjperpendicular from the centre o, is the vertex of the pyramid, which ijbeing joined with a, b, and c, gives the required representation. Only eone side of it is seen when the point of view is opposite the middle of that side. If a b c, fig. 3, were the plane of the base of a frustrum of a pyramid, and thedotted lines abc its top, its perspective would be found by putting the small trianglein perspective, as in fig. 4, and raising per-pendiculars until they would meet the linesfrom A b and c to H, and then joining thesepoints for the top, the base being previouslyformed as before. It is evident from this, that any pyramid,whether triangular, rectangular, octagonal, &c, orany frustrums of these, might in this mannerbe put in perspective, and also any prism. 3. To put the block of a house in thisperspective.—In fig. 5, let the dotted lines indicate the outline of the walls, and the drawnlines the roof; the section line touches one side of the 12 LINEAR PERSPECTIVE. In fig. 6, p is the point of sight, y z the horizontal line, a c the height line, whichtouches one corner of the roof, a b the base line. The roof being the most difficultpart, is done in the following manner:—The height, ag, to the spouting, is left offon a c, and its depth (five or six inches), and then two lines are drawn horizontal Fig. 5. FiS- G-
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondon, booksubject
