fix: 修复滑动选择方向错位与边界/圆环外不命中（物理像素换算 + 按方向就近命中）

2026-08-30 16:24:40 +08:00
parent ad98eb18dc
commit e4324f29cc
10 changed files with 242 additions and 13 deletions
@@ -0,0 +1,64 @@
+using System.Windows;
+using OneClickRun.Helpers;
+using Xunit;
+
+namespace OneClickRun.Tests;
+
+/// <summary>滑动选择：按方向角选取最近扇形的行为测试</summary>
+public class WheelGeometrySwipeTests
+{
+    private const double InnerR = 70;
+    private static readonly Point Center = new(300, 300);
+
+    private static Point At(double angleDeg, double radius) =>
+        WheelGeometry.PointOnCircle(Center, radius, angleDeg * Math.PI / 180);
+
+    [Theory]
+    [InlineData(4, -90, 0)]  // 上 → 扇形0
+    [InlineData(4, 0, 1)]    // 右 → 扇形1
+    [InlineData(4, 90, 2)]   // 下 → 扇形2
+    [InlineData(4, 180, 3)]  // 左 → 扇形3
+    [InlineData(3, -90, 0)]  // 上 → 扇形0
+    [InlineData(3, 0, 0)]    // 右 → 扇形0（3:00 位于扇形0 区域内）
+    [InlineData(3, 90, 1)]   // 下 → 扇形1
+    [InlineData(3, 180, 2)]  // 左 → 扇形2
+    [InlineData(12, 15, 3)]  // 12 扇区：15° 方向 → rel=105°，span=30° → 扇形3
+    public void PicksSectorByDirection(int count, double angleDeg, int expected)
+    {
+        var point = At(angleDeg, (InnerR + 220) / 2);
+        Assert.Equal(expected, WheelGeometry.PickSectorByAngle(point, Center, InnerR, count));
+    }
+
+    [Fact]
+    public void CenterHubReturnsNull()
+    {
+        Assert.Null(WheelGeometry.PickSectorByAngle(Center, Center, InnerR, 4));
+        Assert.Null(WheelGeometry.PickSectorByAngle(At(45, InnerR - 5), Center, InnerR, 4));
+    }
+
+    [Fact]
+    public void BeyondOuterRadiusStillPicksByDirection()
+    {
+        // 快速滑动滑出圆环外：仍按方向命中
+        Assert.Equal(0, WheelGeometry.PickSectorByAngle(At(-45, 800), Center, InnerR, 4));
+        Assert.Equal(2, WheelGeometry.PickSectorByAngle(At(135, 2000), Center, InnerR, 4));
+    }
+
+    [Fact]
+    public void GapAndBoundaryPickNearestSector()
+    {
+        // 4 扇区：89°/91° 位于 90° 边界两侧的间隙内，应就近归属扇形1/扇形2
+        Assert.Equal(1, WheelGeometry.PickSectorByAngle(At(89, 145), Center, InnerR, 4));
+        Assert.Equal(2, WheelGeometry.PickSectorByAngle(At(91, 145), Center, InnerR, 4));
+        // 恰好正下方：边界平局 → 扇形2
+        Assert.Equal(2, WheelGeometry.PickSectorByAngle(At(90, 145), Center, InnerR, 4));
+    }
+
+    [Fact]
+    public void SingleSectorPicksAnyDirection()
+    {
+        Assert.Equal(0, WheelGeometry.PickSectorByAngle(At(0, 300), Center, InnerR, 1));
+        Assert.Equal(0, WheelGeometry.PickSectorByAngle(At(213, 300), Center, InnerR, 1));
+        Assert.Null(WheelGeometry.PickSectorByAngle(Center, Center, InnerR, 1));
+    }
+}