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Show HN: Elevators

1668 points · 413 comments · Jrh0203

  1. altairprime · · focus · HN ↗
    This is pretty cool. OP+author, I wish that it was possible to gray out the elevators as the speed increases, so that their high-contrast "flashing" is reduced while still allowing their movement patterns to emerge. You could even go as far as to fade their color back in once they're standing still, so that the 'stop' locations in the LOOK vs RSR diagram become really clearly apparent, while the elevators' non-stop movement fades into the woodwork as orange dots travel endlessly in the left.

    I figure something like a simple weighted ratio of car color = { 1.0: car fg color, max(1,speed^0.1)-1: shaft bg color } would do, so that 2x only shifts the color 7% towards the background color, but 500x shifts the color 86% towards the background color — and a stationary elevator can fade in from 86% bgcolor to 0% bgcolor over a few ticks as it sits there.

    I recognize that for most of us, the flashing elevators blur into motion blur, but I can see individual frames at 120fps and while I am not seizure-sensitive to high-contrast flashing, I imagine those folks would appreciate you going the extra mile to reduce contrast at higher velocities, too.

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