[Aidan Andrews]

Also just realized as a consequence of the 45 degree relationship, the line connecting a measuring point to the SP is always going to bisect the angle formed by the line which connects the Vanishing point to the SP and the centerline.

so in terms of my above diagram, line DB will always bisect angle ABE and line FB will always bisect angle CBE.

So you can find both measuring points if you just do an angle bisection with your compass. No need to get a long piece of paper.

 

[Aidan Andrews]

My proof:

 

For the mathematically inclined. I’m sure there was a much simpler way but I didn’t find it.

Can’t wait for Erik in a later lecture to casually mention, “oh yeah and by the way there’s actually a 45 degree relationship–”

It was fun anyhow. Very useful.

[Aidan Andrews]

and then redrew the diagram for clarity,

 

[Aidan Andrews]

[Aidan Andrews]

[Aidan Andrews]

[Aidan Andrews]

here’s the proof I just finished:

[Aidan Andrews]

Ok so I’ve been puzzling over this on-and-off since I posted 2 months ago and it turns out the measuring points are always going to be 45 degrees apart with respect to the Station Point. I don’t know if this is already well known information but I didn’t find anything about it anywhere I’ve looked.

So the easier technique to find the measuring point of an off-page vanishing point would be to,

 

first: find the measuring point of the visible Vanishing point. (in the case of this lecture, measuring point left)

second: draw a line connecting this MPL to the SP.

third: Use your 45 triangle to shoot back up from the SP at a 45 degree angle to the drawn line; where it intersects the HL, you’ve found your measuring point right, MPR.

 

A while back I made this graph to try and understand the whole thing better. It’s here, https://www.desmos.com/calculator/kmd9ureoud

 

[Aidan Andrews]

In your drawing, the verticals which would form the base for the diminishment guides are already parallel to the base of the isosceles. So the line drawn through all their midpoints really does represent a bisecting line whose perpendicular forms the base of the isosceles, and intersects with HL to give us the point MPR. BUT in the lecture, the verticals which form the base for the diminishment guides are 90 degrees to HL, and so don’t form the necessary bisecting line needed to find point MPR.

[Aidan Andrews]

is the method used to find the right measuring point MPR meant to be an approximation? I understand it working out to be about the same given how far out the VP is, but geometrically I don’t think it checks out…

[Aidan Andrews]

Tags on photo collections in the library for more filtering options (dynamic lighting, dynamic posing, deep perspective). Also I find myself opening a dozen or so images from the library and bookmarking them in my browser to come back to later. If you could save the images to a custom list in the library it’d be easier to pick up where we left off and in a way I think that’d get more progress out of the students since we’d be able to save progress instead of starting over again from the point of picking out the poses to study, which is a time-obstacle to actual practice. Also added bonus, if these lists were sharable you’d get community collections which would create more community activity I think because it’s almost like a non-overt challenge to other members to do their take on the collection, say if someone posted a collection of a few poses from the image library and said “these are some poses I chose to help practice increasingly deeper perspective.” or “leg day.”

[Aidan Andrews]

I don’t know if it’s a conscious design decision, but I like the community content feeling like it’s very much secondary to the course content since its really easy for students to get distracted, but I do think the margin between the two is wide enough to be shrunk without compromising on that too much. Like I think the forums deter mainly because they’re a little clunky visually, but mostly functionally when uploading photos and referencing others’ posts in a thread (four chan (unsavory place as it is) really has the image thread format nailed down). A smoother thread design on its own I feel like would draw twice as many participants, but also what others here are saying about making there be more entry points to the threads around the site like directly under each lesson rather than just being linked there, or floating on certain pages with threads relating to those pages.

[Aidan Andrews]

love to see it

[Aidan Andrews]

looking forward to it!

[Aidan Andrews]

Will there be more of these eventually? They’re so helpful and convenient.

[Author]

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