From c19e5514ad55d7270c6faf85ace2c7debf594587 Mon Sep 17 00:00:00 2001
From: lanyill <lanyi3@huawei.com>
Date: Wed, 1 Jun 2022 16:31:42 +0800
Subject: [PATCH] =?UTF-8?q?ArkUI=E3=80=91=E3=80=90API9=E3=80=91Interpolate?=
 =?UTF-8?q?=E6=8E=A5=E5=8F=A3=E4=B8=8D=E5=8F=AF=E7=94=A8?=
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Signed-off-by: lanyill <lanyi3@huawei.com>
Change-Id: Idc43ff599102efb3b9f36aa95acbc673420dc4a6
---
 api/@ohos.curves.d.ts | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/api/@ohos.curves.d.ts b/api/@ohos.curves.d.ts
index e3a377d6ce..57d03e20a4 100644
--- a/api/@ohos.curves.d.ts
+++ b/api/@ohos.curves.d.ts
@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2021 Huawei Device Co., Ltd.
+* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
@@ -17,12 +17,12 @@
  * Contains interpolator functions such as initialization, third-order Bezier curves, and spring curves.
  * @import import Curves from '@ohos.curves'
  * @syscap SystemCapability.ArkUI.ArkUI.Full
- * @since 7
+ * @since 9
  */
 declare namespace curves {
   /**
    * enum Curve.
-   * @since 7
+   * @since 9
    */
   enum Curve {
     Linear,
@@ -40,29 +40,41 @@ declare namespace curves {
     Friction,
   }
 
+  /**
+   * Interface for curve object.
+   * @since 9
+   */
+  interface ICurve {
+  /**
+   * Get curve value by fraction.
+   * @since 9
+   */ 
+    interpolate(fraction : number) : number;
+  }
   /**
    * Initializes the interpolator curve when called.
-   * @since 7
+   * @since 9
    */
-  function init(curve?: Curve): string;
+  function init(curve?: Curve): ICurve;
 
   /**
    * Constructs a step curve when called.
-   * @since 7
+   * @since 9
    */
-  function steps(count: number, end: boolean): string;
+  function steps(count: number, end: boolean): ICurve;
 
   /**
    * Constructs a third-order Bezier curve when called.
    * @since 7
+   * @deprecated since 9
    */
-  function cubicBezier(x1: number, y1: number, x2: number, y2: number): string;
+  function cubicBezier(x1: number, y1: number, x2: number, y2: number): ICurve;
 
   /**
    * Constructs a spring curve when called.
-   * @since 7
+   * @since 9
    */
-  function spring(velocity: number, mass: number, stiffness: number, damping: number): string;
+  function spring(velocity: number, mass: number, stiffness: number, damping: number): ICurve;
 }
 
 export default curves;
-- 
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