Attention Deficit Disorder Prosthetic Memory Program

Vanishing Point

ADDPMP418
Vanishing Point - © Attention Deficit Disorder Prosthetic Memory Program
Vanishing Point - © Attention Deficit Disorder Prosthetic Memory Program
Vanishing Point - © Attention Deficit Disorder Prosthetic Memory Program
Vanishing Point - © Attention Deficit Disorder Prosthetic Memory Program

Point on the image plane of a perspective drawing where the two-dimensional perspective projections of mutually parallel lines in three-dimensional space appear to converge. When the set of parallel lines is perpendicular to a picture plane, the construction is known as one-point perspective, and their vanishing point corresponds to the oculus, or “eye point”, from which the image should be viewed for correct perspective geometry. Traditional linear drawings use objects with one to three sets of parallels, defining one to three vanishing points.

The vanishing point theorem is the principal theorem in the science of perspective. It says that the image in a picture plane π of a line L in space, not parallel to the picture, is determined by its intersection with π and its vanishing point. Some authors have used the phrase, “the image of a line includes its vanishing point”. Guidobaldo del Monte gave several verifications, and Humphry Ditton called the result the “main and Great Proposition”. Brook Taylor wrote the first book in English on perspective in 1714, which introduced the term “vanishing point” and was the first to fully explain the geometry of multipoint perspective, and historian Kirsti Andersen compiled these observations. :244–6 She notes, in terms of projective geometry, the vanishing point is the image of the point at infinity associated with L, as the sightline from O through the vanishing point is parallel to L.

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