adding in path geometry for the add point +

2026-04-20 23:23:50 -04:00
parent cad3add223
commit 9c035e2be2
3 changed files with 62 additions and 5 deletions
@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest'
-import { buildWaypointPath, distToSegment, findInsertIndex, getWaypointLabelPosition, snap45, snap45both } from '../waypointUtils'
+import { buildWaypointPath, distToSegment, findInsertIndex, getAddWaypointHandlePosition, getWaypointLabelPosition, snap45, snap45both } from '../waypointUtils'

 describe('buildWaypointPath — bezier (default)', () => {
  it('builds a catmull-rom curve with no waypoints (start = end clamp)', () => {
@@ -192,3 +192,16 @@ describe('getWaypointLabelPosition', () => {
    expect(point).toEqual({ x: 10, y: 20 })
  })
 })
+
+describe('getAddWaypointHandlePosition', () => {
+  it('places bezier add handle on the rendered curved segment', () => {
+    const point = getAddWaypointHandlePosition(0, 0, [{ x: 50, y: 100 }], 100, 0, 0, 'bezier')
+    expect(point.x).toBeCloseTo(21.875, 3)
+    expect(point.y).toBeCloseTo(56.25, 3)
+  })
+
+  it('keeps smooth add handle at straight segment midpoint', () => {
+    const point = getAddWaypointHandlePosition(0, 0, [{ x: 50, y: 0 }, { x: 50, y: 100 }], 100, 100, 1, 'smooth')
+    expect(point).toEqual({ x: 50, y: 50 })
+  })
+})