From c3451d4a4479b6244bd6d1dadf289a8d44bdcca2 Mon Sep 17 00:00:00 2001
From: Jeff Brown <jeffbrown@google.com>
Date: Tue, 15 Feb 2011 19:13:20 -0800
Subject: [PATCH] Scale major axis when finger is oriented.

Change-Id: I281ec25478b4ceffa6ed5a41cb44a7e81d18d8dc
---
 services/input/InputReader.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/services/input/InputReader.cpp b/services/input/InputReader.cpp
index a4d5f35b25174..05f40ba40029c 100644
--- a/services/input/InputReader.cpp
+++ b/services/input/InputReader.cpp
@@ -2641,9 +2641,11 @@ void TouchInputMapper::dispatchTouch(nsecs_t when, uint32_t policyFlags,
                 int32_t c2 = signExtendNybble(in.orientation & 0x0f);
                 if (c1 != 0 || c2 != 0) {
                     orientation = atan2f(c1, c2) * 0.5f;
-                    float minorAxisScale = (16.0f - pythag(c1, c2)) / 16.0f;
-                    toolMinor *= minorAxisScale;
-                    touchMinor *= minorAxisScale;
+                    float scale = 1.0f + pythag(c1, c2) / 16.0f;
+                    touchMajor *= scale;
+                    touchMinor /= scale;
+                    toolMajor *= scale;
+                    toolMinor /= scale;
                 } else {
                     orientation = 0;
                 }