Engineering Graphics 2018-19-I Lecture 2 TA101A Engineering Graphics 2018-19-I By Dr. Mukesh Sharma Professor DEPARTMENT OF CIVIL ENGINEERING Lecture 2 INDIAN INSTITUTE OF TECHNOLOGY KANPUR KANPUR-208016, INDIA
Please note your day for laboratory session Revised Schedule Lectures Tuesday, Thursday 1400-1500 hrs L20 Laboratory Session Monday; A1, A2, A3 1000-1300 hrs Drawing Hall Tuesday; A4, A5, A6, A13 Wednesday; A10, A11, A12, A14 Thursday; A7, A8, A9 Please note your day for laboratory session Please visit Pingala website to find your section https://pingala.iitk.ac.in/IITK-0/login
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Perspective Projection Observer Object PICTURE PLANE Perspective Projection Observer Object All dimensions are foreshortened – size function of where is the picture plane? Pleasing to eyes; draw what we see; camera does the same Is it a good idea? What happens if the observer is at infinite distance? Now, does the position of picture plane matter?
Describe the Shape: Theory of Projections
Orthographic Projection Improvement? Is Object fully defined? Orthographic View PARALLEL Projectors Orthographic Projection Improvement? Is Object fully defined?
Planes of Projection
Revolution of the planes of projection
Planes revolved into the plane of the paper
Obtaining three views of an object
Position of views
Glass box
Opening the glass box
Six views of an object on a sheet of drawing paper