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Hey HN, I built Spin Lab: a browser-based interactive explainer for table-tennis spin. It visualizes topspin/backspin, spin rate, ball trajectory, bounce behav
by srijanshukla18 4mo ago
Hey HN, I built Spin Lab: a browser-based interactive explainer for table-tennis spin.
It visualizes topspin/backspin, spin rate, ball trajectory, bounce behavior, and why the opponent’s return reacts the way it does.
I built it because spin is central to table tennis, but most explanations are either too hand-wavy or too static. I wanted something you can scrub, slow down, and experiment with.
- lunchbucket 4mo agoYou might consider emailing hn@ycombinator.com and asking about the standing of your account.
- gnabgib 4mo ago[flagged]
- N_Lens 4mo agoAccusations of being an LLM are par
- pixel_popping 4mo agoIt's the new NPC insult.
- shaewest 4mo agoTheir post/comment was dead when I first saw the comments
- deleted 4mo ago[deleted]
- lunchbucket 4mo agoThis is what we call a "time of check/time of use" issue.
- threatripper 4mo agoAre you using flight trajectories with simulated drag and lift from Magnus effect?
- srijanshukla18 4mo agoYes! it does do the math for Magnus effect. Source code is all client side you can take a look at it. But early on when I started this, I prompted the LLMs strongly to focus on having accurate real world physics baked in.
- gus_massa 4mo agoNice! Why I can only select the angle in multiples of 5°? I expected to be able to rotate the blade just a little. For "Back Spin" I used: angle = open 50°, Brush = -20° down, Speed = 13 km/h and I got a success "Lands - Smash Food". Do you have a table of the possible classification?