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Rowsoferra
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4yr
added comment inAnatomy Critiques – The Pelvis
Hello I just wanted to post a question not a critique :)
Between 1:18 - 3:55 he talks about the process for finding the first ellipse, and it all makes sense to me until I did it with this pose, a straight on pov. I get the perspective enough to know I should draw it something like position 1, but for that to happen the perpendicular line of the long axis, and the side-to-side line, have to be the same line, (or really close to being the same). I guess my real question is what defines the side-to-side line?
Văn Hiếu Võ
4yr
Using ellipses to represent circles and ellipses in perspective is only a convenient approximation, hardly 100% accurate. I think a helpful way to think of circles and ellipses in perspective is to consider the squares or rectangles that inscribe them. Then you can use bisectors and diagonals to construct a more convincing ellipse.
Văn Hiếu Võ
4yr
What he was referring to as the "side-to-side" line is the "major axis" of the ellipse NOT in perspective. Basically if you draw an ellipse in 2D (x and y), an ellipse has a long axis called "major", and a short axis called "minor". As for the "line perpendicular to the long axis", that would be the "major axis" of the REPRESENTATION of the ellipse in perspective.
