geometry.ts

import type { Opening, Vec2, Wall } from './schema';

/** Bounding-box width (x extent) and depth (y extent) of a polygon. */
export function polygonBounds(points: Vec2[]): { w: number; d: number } {
  let minX = Infinity;
  let minY = Infinity;
  let maxX = -Infinity;
  let maxY = -Infinity;
  for (const p of points) {
    if (p.x < minX) minX = p.x;
    if (p.y < minY) minY = p.y;
    if (p.x > maxX) maxX = p.x;
    if (p.y > maxY) maxY = p.y;
  }
  return { w: maxX - minX, d: maxY - minY };
}

export function wallLength(w: Wall): number {
  const dx = w.end.x - w.start.x;
  const dy = w.end.y - w.start.y;