ECOR 1010 Lecture Notes - Lecture 5: Axonometric Projection, Projection Plane, 3D Projection

• School: Carleton University
• Department: Engineering Common Core Courses
• Course: ECOR 1010
• Professor: Glenn Mc Rae

Document Summary

** majority of engineering information is transmitted by graphical means. Graphics are a good way to solve geometrical problems. Used to describe how to put components together, not how to make them. In perspective projection, the projectors intersect at finite points, called vanishing points (vp) The view is a single known point in space (station point) Picture is formed on projection plane by intersections of the projecting lines from the object to the focal point of the eye. If the projection plane is not parallel to any principal axis, a three-point projection occurs (three vanishing points) Front face of the object is parallel to the projection plane, the front face is true size. The projection lines do not converge to a vanishing point. Makes it easy to compare sizes because perspective foreshortening is minimized. Parallel lines remain parallel instead of converging to a vanishing point. The most important graphical drawing method in engineering!