Find AMAZING FUTURISTIC GATES AND DOORS YOU NEED TO SEE in 2018. In this video you will be able to see most cool gates and doors from worldwide.
The Evolution Door (at 1:16) is actually a surprisingly good idea. Assuming that you use a 1*2 door, the downside is that you need sqrt(2)+0.5=1.91 times as much hinge area (91% more), but the upsides (measured when the gate is half-open) are: The furthest point, at halfway open, goes outwards 36% less. If you sprayed infinitely many points on it, the average distance each point moves out from the frame is 0.11, which is 22% of the distance of a regular door. But that’s nothing compared to the Torggler Steel Door (at 1:45), which stays flat to the surface throughout the entire opening and closing. Calculations for average distance from frame at half-opening: The average position in the Z axis (outwards from the frame) is going to be the maximum divided by 6, 3 from the average of the points being one third of the way up. 2 from the half that doesn’t contribute at all. Because it’s going to be reflected, we look at the direction the top half has to be to not go past Y=1. This is acos((1-sqrt(2)/2)/(sqrt(2)/2))≈65°. Then, to get the maximum in the Z axis, sin(that)*sqrt(2)/2≈0.64. Divide this by 6, and you’ve got 0.107…, which is approximately 0.11.