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  2. Orthographic projection - Wikipedia

    en.wikipedia.org/wiki/Orthographic_projection

    Orthographic projection (also orthogonal projection and analemma) [a] is a means of representing three-dimensional objects in two dimensions.Orthographic projection is a form of parallel projection in which all the projection lines are orthogonal to the projection plane, [2] resulting in every plane of the scene appearing in affine transformation on the viewing surface.

  3. Multiview orthographic projection - Wikipedia

    en.wikipedia.org/wiki/Multiview_orthographic...

    Classification of Multiview orthographic projection and some 3D projections. First-angle projection: In this type of projection, the object is imagined to be in the first quadrant. Because the observer normally looks from the right side of the quadrant to obtain the front view, the objects will come in between the observer and the plane of ...

  4. Engineering drawing - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing

    A multiview projection is a type of orthographic projection that shows the object as it looks from the front, right, left, top, bottom, or back (e.g. the primary views), and is typically positioned relative to each other according to the rules of either first-angle or third-angle projection. The origin and vector direction of the projectors ...

  5. Technical drawing - Wikipedia

    en.wikipedia.org/wiki/Technical_drawing

    Multiview is a type of orthographic projection. There are two conventions for using multiview, first-angle and third-angle. In both cases, the front or main side of the object is the same. First-angle is drawing the object sides based on where they land. Example, looking at the front side, rotate the object 90 degrees to the right.

  6. Descriptive geometry - Wikipedia

    en.wikipedia.org/wiki/Descriptive_geometry

    Example of the use of descriptive geometry to find the shortest connector between two skew lines. The red, yellow and green highlights show distances which are the same for projections of point P. Given the X, Y and Z coordinates of P, R, S and U, projections 1 and 2 are drawn to scale on the X-Y and X-Z planes, respectively.

  7. 3D projection - Wikipedia

    en.wikipedia.org/wiki/3D_projection

    Axonometric projection is further subdivided into three categories: isometric projection, dimetric projection, and trimetric projection, depending on the exact angle at which the view deviates from the orthogonal. [3] [4] A typical characteristic of orthographic pictorials is that one axis of space is usually displayed as vertical.

  8. Plan (drawing) - Wikipedia

    en.wikipedia.org/wiki/Plan_(drawing)

    Each projection is achieved by assuming a vantage point from which to see the place or object, and a type of projection. These projection types are: Classification of Plan (drawing) and some 3D projections. Parallel projection. Orthographic projection. Multiview projection, including: Plan view or floor plan view

  9. Analemma - Wikipedia

    en.wikipedia.org/wiki/Analemma

    Analemma was a common name for orthographic projection until François d'Aguilon of Antwerp promoted its present name in 1613. [4] in 1644, mathematician Jean-Louis Vaulezard described the first analemmatic sundial installed in France (and probably in the world). The sundial is located at the church of Brou, and depicts the 8-shape analemma. [5]