Function inwardEdgeNormal

lib/offset-polygon.js:3–11

(vertex1, vertex2)

// src/offset-polygon.ts
var TWO_PI = Math.PI * 2;
function inwardEdgeNormal(vertex1, vertex2) {
  const dx = vertex2.x - vertex1.x;
  const dy = vertex2.y - vertex1.y;
  const edgeLength = Math.sqrt(dx * dx + dy * dy);
  return {
    x: -dy / edgeLength,
    y: dx / edgeLength
  };
}
function outwardEdgeNormal(vertex1, vertex2) {
  var n = inwardEdgeNormal(vertex1, vertex2);
  return {