From e85c5aa67ea27f930b573c0c6662ef6bd6314d54 Mon Sep 17 00:00:00 2001 From: Romain Guy Date: Wed, 12 Aug 2009 15:23:56 -0700 Subject: [PATCH] Add norm() and map() to MathUtils. --- core/java/android/util/MathUtils.java | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/core/java/android/util/MathUtils.java b/core/java/android/util/MathUtils.java index c80d90f8699f4..b35dd1eac0deb 100644 --- a/core/java/android/util/MathUtils.java +++ b/core/java/android/util/MathUtils.java @@ -144,6 +144,14 @@ public final class MathUtils { 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); }