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When a surface of an object is parallel to a plane of projection it will appear in the view in true sie and shape If a surface on an object is parallel to one of the principal planes of projection then the angular relationship of that surface to at least two other principal projection planes is
Read MoreHowever orthographic and orthogonal more correctly refer to the right angle formed between the projection rays and the projection plane versus the angle formed between the subject of the drawing and the projection plane Thus orthographic projections include axonometric or
Read MoreOblique Surfaces An oblique surface is tipped to all principal planes of projection and does not appear true sie in any standard view
Read MoreDifference between Isometric Oblique and Orthographic Drawing Isometric drawings A pictorial representation of an object in which all three dimensions are drawn at full scale rather than foreshortening them to the true projection An isometric drawing looks like an isometric projection but its all lines parallel to the three major axes are measurable
Read MoreHi First one needs to understand what is projection To put this in simple wordscreating a view of an object on a planeImaginary Here There are various
Read MoreOrthographic Projections Orthographic Projections is a technical drawing in which different views of an object are projected on different reference planes observing perpendicular to respective reference plane Different Reference planes are oriontal Plane HP ertical Plane VP ide or Profile Plane PP Different views are
Read MoreJan 30 2018nbsp018332PROJECTION OF PLANESRecreatedLecture 5 Circular Plane with surface inclined to HP with 2 cases Duration 1338 Manas Patnaik 272300 views
Read MoreOblique Surfaces and Edges Definition Surfaces or lines that are positioned at an angle with respect to all the principal planes of projection are oblique An oblique surface will never appear as an line or as a true sie area in any of the principal views It appears as
Read MoreSep 28 2017nbsp018332Axonometric projections The Y axis always stays perpendicular to the horiontal plane X and Z axes are inclined to the horiontal plane Image source vitorials The angle between the horiontal X and Z axes and the horiontal plane determines the type of axonometric projection
Read MoreORTHOGRAPHIC AND OBLIQUE PROJECTION An ORTHOGRAPHIC projection is a parallel projection in which the projectors are perpendicular to the plane of projection as in figure 34 An OBLIQUE projection is one in which the projectors are other than perpendicular to the plane of projection
Read MoreOblique projection is a type of parallel projection it projects an image by intersecting parallel rays projectors from the threedimensional source object with the drawing surface projection plane In both oblique projection and orthographic projection parallel lines of the source object produce parallel lines in the projected image The projectors in oblique projection intersect the projection plane at an oblique
Read MoreJan 18 2014nbsp018332Oblique surfaces always appear foreshortened not perpendicular to any surface Angles a If an angle is in a normal plane that is parallel to a plane of projection the angle will be shown true sie on the plane of the projection to which it is parallel
Read MoreMultiview projection is an orthographic projection for which the object is behind the plane of projection and the object is oriented such that only two of its dimensions are shown Figure 87 As the parallel lines of sight pierce the projection plane the features of the part are outlined Multiview drawings employ view projection
Read MoreAn oblique plane is oblique to all principal planes of projection An oblique surface does not appear in its true shape or sie or as a line in any of the principal views instead an oblique plane always appears foreshortened in any principal view REPRESENTATIONS OF COMMON GEOMETRIC SHAPES 847 Multiview representations of common geometric shapes
Read MoreThe obverse of an orthographic projection is an oblique projection which is a parallel projection in which the projection lines are not orthogonal to the projection plane The term orthographic is sometimes reserved specifically for depictions of objects where the principal axes or planes of the object are also parallel with the projection plane 1 but these are better known as view projections
Read MoreOblique surfaces always appear foreshortened not perpendicular to any surface Angles a If an angle is in a normal plane that is parallel to a plane of projection the angle will be shown true sie on the plane of the projection
Read MoreOblique surfaces Cannot appear as an edge in a standard view not perpendicular to any standard plane Will not appear as true sie in any view
Read MoreTwodimensional isometric or oblique views of a threedimensional object on a drawing surface at right angles to the views and the lines of sight projection In these views the lines of the object parallel to the drawing surface are of true length and thus can be drawn to scale
Read MoreOrthographic Projections rthographic Projections is a technical drawing in which different views of an object are projected on different reference planes observing perpendicular to respective reference plane ifferent Reference planes are oriontal Plane HP
Read MoreJan 18 2010nbsp018332An oblique projection is a simple type of graphical projection used for producing pictorial twodimensional images of threedimensional objects it projects an image by intersecting parallel rays projectors from the threedimensional source object with the drawing surface projection plan
Read MoreOblique Projections Oblique Projections Computer Graphics Video Tutorial Sequential Circuit Design video tutorials for GATE IES and other PSUs exams preparation and to help IT Engineering Students covering Introduction Line Generation Algorithm Circle Generation Algorithm Polygon Filling Algorithm viewing and Clipping 2D Transformation 3D Computer Graphics 3D Transformation
Read MoreOblique Surfaces and Edges Definition Surfaces or lines that are positioned at an angle with respect to all the principal planes of projection are oblique An oblique surface will never appear as an line or as a true sie area in any of the principal views It appears as
Read MoreOrthographic Projection The lines connecting from the Point of Sight to the 3D object are called the Projection Lines or Lines of Sight Note that in the above figure the projection lines are connected at the point of sight and the projected 2D image is smaller than the actual sie of the 3D object Now if the projection lines are parallel to
Read MoreFirst of all orthographic projections are drawn on one side of the sheet 2 Then all the three axes of the oblique drawing are constructed in which one axis is horiontal and the other is vertical while the third axis is from 30176 to 60176 to the horiontal line
Read MoreThe view so formed is known as the orthographic projection Similarly the parallel projectors shall form the pictures on the respective picture planes from the positions B and C Usually two views are sufficient for simple objects but the help of three or more views is necessary for complicated objects
Read MoreOblique projection is a type of parallel projection it projects an image by intersecting parallel rays projectors from the threedimensional source object with the drawing surface projection plane In both oblique projection and orthographic projection parallel lines of the source object produce parallel lines in the projected image The projectors in oblique projection intersect the projection plane at an oblique angle to produce the projected
Read MoreOblique Surfaces An oblique surface is a surface that is slanted in two different directions Figures 421 and 422 show objects that include oblique surfaces
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