- From: Noam Rosenthal via GitHub <sysbot+gh@w3.org>
- Date: Tue, 25 Feb 2025 15:18:41 +0000
- To: public-css-archive@w3.org
@smfr I looked at the bevel formula and generalized it to any superellipse, by using the approximate tangent. It basically works like a bevel, where the line goes to the control point of the arc equivalent to the superellipse (have the same value at t=0.5). It looks something like this: ``` // a and b are the coordinates for the contol point of the approximate arc a = 1 / (2 ^ (1/k)); b = 1 - a; slope = a / b; magnitude = Math.hypot(a, b); norm_a = a / magnitude; norm_b = b / magnitude; // This compute the intercept of a line parallel to the tangent, at distance (1) outer_offset = norm_b + slope * (norm_a - 1); // outer_offset can now be multiplied by the stroke width to compute the join size (actual outer offset) ``` -- GitHub Notification of comment by noamr Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/11610#issuecomment-2682346438 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 25 February 2025 15:18:41 UTC