Thank you very much Mr. Cary Nord.

I don't know much about Cary's art other than he drew (is still drawing?) Conan at some point in his career (I think). I read about him on wikipedia a while ago, and that's what I seem to recall.

I digress. For a limited time Mr. Nord was posting drawing instruction on the forums located at digitalwebbing.com (I think :m-u-d-c-a-t: tipped me off). One of Mr. Nord's lessons on perspective addressed (I think) something that always bothered me about perspective.

I'd like to blame the material I've read. The typical discussion of perspective (that I've come across) details the mechanics of single/two point perspectives supplemented by illustrations of trivial case studies (standard box-horizon-vanishing point break-downs) and that is usually the breadth of it; next topic.

The concept they fail to explain (or perhaps they explained and I just failed to grasp) is thus: single-point and two-point perspective are NOT mutually exclusive to a scene (or even an object in the scene (I think)). Additionally, each subject (or even sub-subjects, etc.) can have their own vanishing points located on the horizon. Only subjects with parallel edges share vanishing points. Rotate a subject slightly and the vanishing point shifts.

I didn't get that until I read Mr. Nord's comments describing the fundamentals of perspective.

For fun I've uploaded a simple perspective rendering created with blender. It's akin to the typical trivial perspective examples (oh the irony), comprised of a row of boxes, with single point perspective and another row rotated 45 degrees to demonstrate objects with double vanishing points.

Maybe if I get adventurous I'll add to it another box or two with some different rotations and see where the vanishing points end up. Hopefully it doesn't get too messy.

-Abro