Pictorial Drafting
Take Notes: You can use your hand written notes during the tests
Why Pictorial?
· Normally we see objects as 3 Dimensional – having length, width and thickness (or width, depth and height).
· In pictorial drafting 1 view can represent the object.
· Pictorial views are frequently used for illustrative purposes in advertising.
· The majority of parts are too complicated to be described properly by a pictorial view,therefore 95% of drawings are done in Multiview Drawing or Orthographic Projection (such as – top, front, right side).
· With Computer Aided Drafting and Design it is now possible to draw in 3 dimensional and print in 2D in orthographic views.
· Normally we see objects as 3 Dimensional – having length, width and thickness (or width, depth and height).
· In pictorial drafting 1 view can represent the object.
· Pictorial views are frequently used for illustrative purposes in advertising.
· The majority of parts are too complicated to be described properly by a pictorial view,therefore 95% of drawings are done in Multiview Drawing or Orthographic Projection (such as – top, front, right side).
· With Computer Aided Drafting and Design it is now possible to draw in 3 dimensional and print in 2D in orthographic views.
Pictorial Types: (Note: Typically pictorial drawings do not have hidden lines or center lines)
Isometric
o Is usually drawn with both sides at 30 degrees and 90 degree vertical lines.
o Is a very fast method to make fairly realistic 3D drawings. o Gives a 2 Point Perspective look. o Good to use if there is circles (holes or cylinders) on the side faces. |
Oblique
o Is usually drawn using the front view and the right side at 45 degrees and 90 degree vertical lines.
o Is a very fast method to make fairly realistic 3D drawings – Cabinet Oblique tends to look more realistic. o Gives a 1 Point Perspective look. o Is very good to use if there are circles (holes or cylindrical shapes) on the front faces. o Can look awkward depending on the shape and difficult to do with circles on the sides. |
Perspective
o Is the slowest method to draw but is the most realistic 3D drawing.
o One Point Perspective is the fastest method of Perspective and is good for room perspectives. o Two Point Perspective takes longer but is the best method for house exteriors that look realistic. o Three Point Perspective is seldom used but can give some interesting perspectives depending on the placement of the vanishing points. |