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authorKen Wakasa <kwakasa@google.com>2012-09-19 15:19:26 -0700
committerAndroid Git Automerger <android-git-automerger@android.com>2012-09-19 15:19:26 -0700
commitf5ecf29afc6a3bd53ff838843b3dc9bb79f99a90 (patch)
tree00253a3cbb58ce4a3e4927184f18c9a620c7861a /native/jni/src/geometry_utils.h
parentd9ea76cdf6c7d49d1aab5b7fc95b0118b683b051 (diff)
parentedbd4a06604352f35978000d2bb990ab597dc5c4 (diff)
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am edbd4a06: am 63dd5b4c: Merge "Simplify distance calculating method for gesture input." into jb-mr1-dev
* commit 'edbd4a06604352f35978000d2bb990ab597dc5c4': Simplify distance calculating method for gesture input.
Diffstat (limited to 'native/jni/src/geometry_utils.h')
-rw-r--r--native/jni/src/geometry_utils.h15
1 files changed, 3 insertions, 12 deletions
diff --git a/native/jni/src/geometry_utils.h b/native/jni/src/geometry_utils.h
index bad5eda61..3892b46a0 100644
--- a/native/jni/src/geometry_utils.h
+++ b/native/jni/src/geometry_utils.h
@@ -64,17 +64,8 @@ static inline float getAngleDiff(float a1, float a2) {
return diff;
}
-// static float pointToLineSegSquaredDistanceFloat(
-// float x, float y, float x1, float y1, float x2, float y2) {
-// float A = x - x1;
-// float B = y - y1;
-// float C = x2 - x1;
-// float D = y2 - y1;
-// return fabsf(A * D - C * B) / sqrtf(C * C + D * D);
-// }
-
static inline float pointToLineSegSquaredDistanceFloat(
- float x, float y, float x1, float y1, float x2, float y2) {
+ float x, float y, float x1, float y1, float x2, float y2, bool extend) {
const float ray1x = x - x1;
const float ray1y = y - y1;
const float ray2x = x2 - x1;
@@ -86,10 +77,10 @@ static inline float pointToLineSegSquaredDistanceFloat(
float projectionX;
float projectionY;
- if (projectionLengthSqr < 0.0f) {
+ if (!extend && projectionLengthSqr < 0.0f) {
projectionX = x1;
projectionY = y1;
- } else if (projectionLengthSqr > 1.0f) {
+ } else if (!extend && projectionLengthSqr > 1.0f) {
projectionX = x2;
projectionY = y2;
} else {