暂且修了LookAt

Assets/Scripts/Extensions/CustomCurvePresets.cs

@@ -0,0 +1,58 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Ichni
+{
+    
+    /// <summary>
+    /// 自定义曲线预设
+    /// </summary>
+    public static class CustomCurvePresets
+    {
+
+        /// <summary>
+        /// 瞬间完成
+        /// </summary>
+        /// <returns></returns>
+        public static AnimationCurve Instant()
+        {
+            Keyframe[] keys = new Keyframe[2];
+            keys[0] = new Keyframe(0, 1, 0, 0);
+            keys[1] = new Keyframe(1, 1, 0, 0);
+            return new AnimationCurve(keys);
+        }
+        
+        /// <summary>
+        /// 抛物线曲线，在中间达到最大值，两端为起始值
+        /// </summary>
+        /// <param name="totalTime">总时间</param>
+        /// <param name="startValue">起始（和结束）值</param>
+        /// <param name="peakValue">中点最大值</param>
+        public static AnimationCurve Parabolic(float totalTime, float startValue, float peakValue)
+        {
+            Keyframe[] keys = new Keyframe[3];
+            keys[0] = new Keyframe(0, startValue, 0, 0);
+            keys[1] = new Keyframe(totalTime / 2, peakValue, 0, 0);
+            keys[2] = new Keyframe(totalTime, startValue, 0, 0);
+            return new AnimationCurve(keys);
+        }
+
+        /// <summary>
+        /// 自定义峰值点位置的抛物线曲线，在指定时间点达到最大值，两端为起始值
+        /// </summary>
+        /// <param name="totalTime">总时间</param>
+        /// <param name="startValue">起始（和结束）值</param>
+        /// <param name="peakValue">最大值</param>
+        /// <param name="peakTimePercent">最大值的比例点</param>
+        /// <returns></returns>
+        public static AnimationCurve CustomPeakTimeParabolic(float totalTime, float startValue, float peakValue, float peakTimePercent)
+        {
+            Keyframe[] keys = new Keyframe[3];
+            keys[0] = new Keyframe(0, startValue, 0, 0);
+            keys[1] = new Keyframe(totalTime * peakTimePercent, peakValue, 0, 0);
+            keys[2] = new Keyframe(totalTime, startValue, 0, 0);
+            return new AnimationCurve(keys);
+        }
+    }
+}