# Modern Perspective; A Treatise Upon The Principles And Practice Of Plane And Cylindrical Perspective

## byWilliam Robert Ware

### Paperback | January 4, 2012

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Book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1885. Not illustrated. Excerpt: ... 421. When the given line is inclined to the Axis, the distance from the station-point to the Thedtetanco given vanishing-point is the hypotenuse of a "/wng-po'int right-angled triangle, of which the station- tion-point. point is the vertex, the Axis the height, and Jlg-134the distance from the Centre to the given vanishingpoint the base. See Fig. 134. When the given line is normal to the plane of the picture, having the perspective of its vanishing-point at the Centre, the distance of this vanishing , Fig. 135. point from the station-point is equal to the length of the Axis, and both isosceles triangles are right-angled. See Fig. 135. 422. Since the auxiliary plane may be taken in any direction, its trace may be drawn in any direc- Existing lines avail tion through the perspective of the vanishing- able as traces ° A A w or as imtial point. Any existing line that happens to pass Unesthrough the perspective of the vanishing-point is accordingly available as such a trace, a line parallel to it being drawn through the initial-point as an initial-line. Conversely, any existing line that happens to pass through the initial-point may be used as an initial-line, and a trace may be drawn through the vanishing-point parallel to it, as has already been said (413). 423. The locus of the perspective of the point of distance is then a circle described about the per- The locus of , . n , i . i . . i_ i_ the point of spective ot the vanishing-point as a centre, distance, with a radius equal to the distance of this Flg136, centre from the station-point. Such a circle will be cut by any given trace in two points. Each trace then contains two such points of distance, one of which makes, with the station-point and the perspective of the vanishing-point, an...

### Details & Specs

Title:Modern Perspective; A Treatise Upon The Principles And Practice Of Plane And Cylindrical PerspectiveFormat:PaperbackDimensions:74 pages, 9.69 × 7.44 × 0.15 inPublished:January 4, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217317154

ISBN - 13:9780217317153

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