Allow Path Animations to support overshooting. (bc68f5ad) · Commits · e / os / android_frameworks_base

core/java/android/animation/PathKeyframes.java

+23 −19

Original line number	Diff line number	Diff line
		@@ -17,7 +17,6 @@ package android.animation;

		import android.graphics.Path;
		import android.graphics.PointF;
		import android.util.MathUtils;

		import java.util.ArrayList;

		@@ -64,11 +63,12 @@ class PathKeyframes implements Keyframes {

		@Override
		public Object getValue(float fraction) {
		fraction = MathUtils.constrain(fraction, 0, 1);

		int numPoints = mKeyframeData.length / 3;

		if (fraction == 0) {
		if (fraction < 0) {
		return interpolateInRange(fraction, 0, 1);
		} else if (fraction > 1) {
		return interpolateInRange(fraction, numPoints - 2, numPoints - 1);
		} else if (fraction == 0) {
		return pointForIndex(0);
		} else if (fraction == 1) {
		return pointForIndex(numPoints - 1);
		@@ -91,8 +91,13 @@ class PathKeyframes implements Keyframes {
		}

		// now high is below the fraction and low is above the fraction
		int startBase = (high * NUM_COMPONENTS);
		int endBase = (low * NUM_COMPONENTS);
		return interpolateInRange(fraction, high, low);
		}
		}

		private PointF interpolateInRange(float fraction, int startIndex, int endIndex) {
		int startBase = (startIndex * NUM_COMPONENTS);
		int endBase = (endIndex * NUM_COMPONENTS);

		float startFraction = mKeyframeData[startBase + FRACTION_OFFSET];
		float endFraction = mKeyframeData[endBase + FRACTION_OFFSET];
		@@ -110,7 +115,6 @@ class PathKeyframes implements Keyframes {
		mTempPointF.set(x, y);
		return mTempPointF;
		}
		}

		@Override
		public void invalidateCache() {