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A projection plane, or plane of projection, is a type of view in which graphical projections from an object intersect.〔Gary R. Bertoline et al. (2002) ''Technical Graphics Communication''. McGraw–Hill Professional, 2002. ISBN 0-07-365598-8, p. 330.〕 Projection planes are used often in descriptive geometry and graphical representation. A picture plane in perspective drawing is a type of projection plane. With perspective drawing, the lines of sight between an object and a picture plane return to a vanishing point and are not parallel. With parallel projection the lines of sight from the object to the projection plane are parallel. File:Perspective projection of triangle ABC on plane Π from point S.svg | Perspective projection of triangle ABC on plane Π from point S. File:Axonometric_projection.svg | Axonometric projection on projection plane Π File:Perspectiva-1.svg | A cube in two-point perspective File:Perspectiva-2.svg | Simulated rays of light travel from the object, through the projection plane, and to the viewer's eye or camera. This is the basis for graphical perspective. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Projection plane」の詳細全文を読む スポンサード リンク
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