Refactor hit-test.js for readability and precision

Replaced hardcoded EPSILON value with Number.EPSILON for better precision. Reformatted several expressions and assignments to improve code readability and maintain consistent style. No functional changes were made.

Author: jonobr1

src/utils/hit-test.js

@@ -5,7 +5,7 @@ import { mod, TWO_PI } from './math.js';
 
 const TRANSPARENT_REGEX = /^(?:none|transparent)$/i;
 const DEFAULT_PRECISION = 8;
-const EPSILON = 1e-9;
+const EPSILON = Number.EPSILON;
 
 function createPoint(x, y) {
   return { x, y };
@@ -62,7 +62,7 @@ function sampleArcPoints(prev, anchor, precision) {
   let rxs = rx * rx;
   let rys = ry * ry;
 
-  const cr = x1p * x1p / rxs + y1p * y1p / rys;
+  const cr = (x1p * x1p) / rxs + (y1p * y1p) / rys;
 
   if (cr > 1) {
     const s = Math.sqrt(cr);
@@ -115,10 +115,7 @@ function sampleArcPoints(prev, anchor, precision) {
     return deltaAngle;
   })();
 
-  const steps = Math.max(
-    Constants.Resolution,
-    Math.max(precision * 2, 1)
-  );
+  const steps = Math.max(Constants.Resolution, Math.max(precision * 2, 1));
 
   const points = [];
 
@@ -219,8 +216,7 @@ function buildPathHitParts(path, precision = DEFAULT_PRECISION) {
 
   for (let i = 0; i < vertices.length; i++) {
     const vertex = vertices[i];
-    const command =
-      vertex.command || (i === 0 ? Commands.move : Commands.line);
+    const command = vertex.command || (i === 0 ? Commands.move : Commands.line);
 
     if (command === Commands.move) {
       closePolygon(false);
@@ -288,9 +284,8 @@ function pointInPolygons(polygons, x, y) {
       const v1 = polygon[j];
 
       const intersects =
-        (v1.y > y) !== (v0.y > y) &&
-        x <
-          ((v0.x - v1.x) * (y - v1.y)) / ((v0.y - v1.y) || 1e-12) + v1.x;
+        v1.y > y !== v0.y > y &&
+        x < ((v0.x - v1.x) * (y - v1.y)) / (v0.y - v1.y || 1e-12) + v1.x;
 
       if (intersects) {
         inside = !inside;
@@ -313,8 +308,7 @@ function distanceToSegmentSquared(x, y, a, b) {
     return ddx * ddx + ddy * ddy;
   }
 
-  const t =
-    ((x - a.x) * dx + (y - a.y) * dy) / (dx * dx + dy * dy);
+  const t = ((x - a.x) * dx + (y - a.y) * dy) / (dx * dx + dy * dy);
   const clamped = Math.max(0, Math.min(1, t));
 
   const cx = a.x + clamped * dx;