From def2804a8580191eea3483be4f7c48fd030f12e8 Mon Sep 17 00:00:00 2001
From: Julian Winkler <julian.winkler1@web.de>
Date: Thu, 13 Jul 2023 22:28:44 +0200
Subject: [PATCH] add AccelerateInterpolator based on AOSP version

---
 .../animation/AccelerateInterpolator.java     | 25 +++++++++++++++++++
 .../android/view/animation/Interpolator.java  |  5 ++++
 src/api-impl/meson.build                      |  2 ++
 3 files changed, 32 insertions(+)
 create mode 100644 src/api-impl/android/view/animation/AccelerateInterpolator.java
 create mode 100644 src/api-impl/android/view/animation/Interpolator.java

diff --git a/src/api-impl/android/view/animation/AccelerateInterpolator.java b/src/api-impl/android/view/animation/AccelerateInterpolator.java
new file mode 100644
index 00000000..e373d045
--- /dev/null
+++ b/src/api-impl/android/view/animation/AccelerateInterpolator.java
@@ -0,0 +1,25 @@
+package android.view.animation;
+
+/**
+ * An interpolator where the rate of change starts out slowly and
+ * and then accelerates.
+ *
+ */
+public class AccelerateInterpolator implements Interpolator {
+	private final float mFactor;
+	private final double mDoubleFactor;
+
+	public AccelerateInterpolator() {
+		mFactor = 1.0f;
+		mDoubleFactor = 2.0;
+	}
+
+	public float getInterpolation(float input) {
+		if (mFactor == 1.0f) {
+			return input * input;
+		} else {
+			return (float)Math.pow(input, mDoubleFactor);
+		}
+	}
+
+}
diff --git a/src/api-impl/android/view/animation/Interpolator.java b/src/api-impl/android/view/animation/Interpolator.java
new file mode 100644
index 00000000..511c6123
--- /dev/null
+++ b/src/api-impl/android/view/animation/Interpolator.java
@@ -0,0 +1,5 @@
+package android.view.animation;
+
+public interface Interpolator {
+	
+}
diff --git a/src/api-impl/meson.build b/src/api-impl/meson.build
index 73f7493d..a1d6c3e4 100644
--- a/src/api-impl/meson.build
+++ b/src/api-impl/meson.build
@@ -191,6 +191,8 @@ hax_jar = jar('hax', [
               	'android/util/TypedValue.java',
               	'android/util/Xml.java',
               	'android/util/XmlPullAttributes.java',
+              	'android/view/animation/AccelerateInterpolator.java',
+              	'android/view/animation/Interpolator.java',
               	'android/view/Choreographer.java',
               	'android/view/Display.java',
               	'android/view/Gravity.java',