From a1e0ef4836f59a9fd5a2b44ecb94c27227e159c6 Mon Sep 17 00:00:00 2001
From: Keisuke Kuroyanagi <ksk@google.com>
Date: Fri, 7 Mar 2014 13:03:34 +0900
Subject: [PATCH] Fix: point to line segment distance can be NaN.
Change-Id: I7db6bfea925a0eda82bfb1f7b5e1110b193dabdb
---
native/jni/src/suggest/core/layout/proximity_info_utils.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/native/jni/src/suggest/core/layout/proximity_info_utils.h b/native/jni/src/suggest/core/layout/proximity_info_utils.h
index 6d2c11b091..f55ee23aa3 100644
--- a/native/jni/src/suggest/core/layout/proximity_info_utils.h
+++ b/native/jni/src/suggest/core/layout/proximity_info_utils.h
@@ -100,6 +100,10 @@ class ProximityInfoUtils {
const float dotProduct = ray1x * ray2x + ray1y * ray2y;
const float lineLengthSqr = GeometryUtils::SQUARE_FLOAT(ray2x)
+ GeometryUtils::SQUARE_FLOAT(ray2y);
+ if (lineLengthSqr <= 0.0f) {
+ // Return point to the point distance.
+ return getSquaredDistanceFloat(x, y, x1, y1);
+ }
const float projectionLengthSqr = dotProduct / lineLengthSqr;
float projectionX;
--
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