Merge change 20998
* changes:
Add norm() and map() to MathUtils.
diff --git a/core/java/android/util/MathUtils.java b/core/java/android/util/MathUtils.java
index c80d90f..b35dd1e 100644
--- a/core/java/android/util/MathUtils.java
+++ b/core/java/android/util/MathUtils.java
@@ -144,6 +144,14 @@
return start + (stop - start) * amount;
}
+ public static float norm(float start, float stop, float value) {
+ return (value - start) / (stop - start);
+ }
+
+ public static float map(float minStart, float minStop, float maxStart, float maxStop, float value) {
+ return maxStart + (maxStart - maxStop) * ((value - minStart) / (minStop - minStart));
+ }
+
public static int random(int howbig) {
return (int) (sRandom.nextFloat() * howbig);
}