Graphical Parallel Projection & the Endless Modern "New"

I expect that someone following this blog has wondered why I’m wasting my time exploring graphical projections. They are not central to professional rendering. They are certainly not in the mainstream of architectural illustration. Graphical projection is not what springs to mind when you think about selling a design: it isn’t very dramatic or emotional; in fact it is a rather cold, abstract technique. But, I don’t think you can understand the modern movement of architecture without understanding graphical projections; and understanding the modern movement has been on my mind for a long time; and is what I’m after right now. Back in the hay-day of Beaux Arts building, architects used orthographic drawings (plans, sections and elevations) rendered in shade and shadow. They avoided graphical projection drawing. If a three dimensional view was necessary, a perspective was created. Even a simple diagram such as this vault study from Joseph Gwilt's Civil Architecture (1825) was drawn ...