| c2a0b4482d7144e8382346ea4c22c7b89368fec0 |
|
02-Oct-2014 |
Neil Fuller <nfuller@google.com> |
resolved conflicts for merge of ee665151 to lmp-mr1-dev-plus-aosp
Change-Id: I2588c65b7a9fa43f968151a206924a804f0595a7
|
| 33253a4baa6279f81a73425b49dfb6abe5f5416e |
|
01-Oct-2014 |
Neil Fuller <nfuller@google.com> |
Switch from FloatMath -> Math and Math.hypot where possible
The motivation is an API change: FloatMath is going to be
deprecated and/or removed. Performance is not the goal of
this change.
That said...
Math is faster than FloatMath with AOT compilation.
While making the change, occurances of:
{Float}Math.sqrt(x * x + y * y) and
{Float}Math.sqrt({Float}Math.pow(x, 2) + {Float}Math.pow(y, 2))
have been replaced with:
{(float)} Math.hypot(x, y)
Right now there is no runtime intrinsic for hypot so is not faster
in all cases for AOT compilation:
Math.sqrt(x * x + y * y) is faster than Math.hypot(x, y) with
AOT, but all other combinations of FloatMath, use of pow() etc.
are slower than hypot().
hypot() has the advantage of being self documenting and
could be optimized in future. None of the behavior differences
around NaN and rounding appear to be important for the cases
looked at: they all assume results and arguments are in range
and usually the results are cast to float.
Different implementations measured on hammerhead / L:
AOT compiled:
[FloatMath.hypot(x, y)]
benchmark=Hypot_FloatMathHypot} 633.85 ns; σ=0.32 ns @ 3 trials
[FloatMath.sqrt(x*x + y*y)]
benchmark=Hypot_FloatMathSqrtMult} 684.17 ns; σ=4.83 ns @ 3 trials
[FloatMath.sqrt(FloatMath.pow(x, 2) + FloatMath.pow(y, 2))]
benchmark=Hypot_FloatMathSqrtPow} 1270.65 ns; σ=12.20 ns @ 6 trials
[(float) Math.hypot(x, y)]
benchmark=Hypot_MathHypot} 96.80 ns; σ=0.05 ns @ 3 trials
[(float) Math.sqrt(x*x + y*y)]
benchmark=Hypot_MathSqrtMult} 23.97 ns; σ=0.01 ns @ 3 trials
[(float) Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2))]
benchmark=Hypot_MathSqrtPow} 156.19 ns; σ=0.12 ns @ 3 trials
Interpreter:
benchmark=Hypot_FloatMathHypot} 1180.54 ns; σ=5.13 ns @ 3 trials
benchmark=Hypot_FloatMathSqrtMult} 1121.05 ns; σ=3.80 ns @ 3 trials
benchmark=Hypot_FloatMathSqrtPow} 3327.14 ns; σ=7.33 ns @ 3 trials
benchmark=Hypot_MathHypot} 856.57 ns; σ=1.41 ns @ 3 trials
benchmark=Hypot_MathSqrtMult} 1028.92 ns; σ=9.11 ns @ 3 trials
benchmark=Hypot_MathSqrtPow} 2539.47 ns; σ=24.44 ns @ 3 trials
Bug: https://code.google.com/p/android/issues/detail?id=36199
Change-Id: I06c91f682095e627cb547d60d936ef87941be692
/frameworks/base/core/java/android/widget/Scroller.java
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| 54b9e5baa30a5b5f3f5dac1db877f389c250cafc |
|
06-Aug-2014 |
Chet Haase <chet@google.com> |
Fix Scroller interpolation
The ViscousFluid interpolator simply returns the input value and not the
interpolation of that value.
Issue #16815073 Scroller.ViscousFluidInterpolator short circuited
Change-Id: Ifa189026c1396a42a2348260a2a54cf0c3caad08
/frameworks/base/core/java/android/widget/Scroller.java
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| 79a5feff954b496de5c156a2f228b9cdda43cfa8 |
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05-Sep-2013 |
Alan Viverette <alanv@google.com> |
Fix the build, use viscous fluid interpolator in OverScroller
Change-Id: I175a220d1d915161896b9b223acfee08e0face2c
/frameworks/base/core/java/android/widget/Scroller.java
|
| d75e2539c10874acd74d443f58b2e34e0c67495c |
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04-Sep-2013 |
Alan Viverette <alanv@google.com> |
Move viscous fluid interpolator to its own class
Change-Id: If7dcc968895ba9200b40fbc7d7aded6e6bbf6ff7
/frameworks/base/core/java/android/widget/Scroller.java
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| 87cfad7d742c8fae1ac268168e2ada286d330ef1 |
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07-Feb-2013 |
Katie McCormick <kmccormick@google.com> |
Doc change: Scroller Javadoc Bug # 7966653
Change-Id: I4365946f890a76fcfa78ca9d69f2a8e0848095a9
/frameworks/base/core/java/android/widget/Scroller.java
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| 990dfc6f908c8fc22bb15a3e0a36699e954ec28c |
|
10-Aug-2012 |
Adam Powell <adamp@google.com> |
Sync fling physics between Scroller/OverScroller
Bug 6793537
Have the default fling physics for Scroller follow the newer patterns
from OverScroller.
Make some constants determined by DisplayMetrics density in
OverScroller per-instance rather than static.
Change-Id: I5308e4bb8eca63e95cf3f1eee1ba4fa5391023b0
/frameworks/base/core/java/android/widget/Scroller.java
|
| 89935e41c593a599e8955388b27fb926e60e5e94 |
|
31-Aug-2011 |
Adam Powell <adamp@google.com> |
Make EdgeEffect public API.
This enables apps to make use of the system's visual edge effect used
during overscroll in 2D content.
Also un-@hide the getCurrVelocity methods from Scroller/OverScroller,
without which it becomes cumbersome to obtain values to pass to the
EdgeEffect#onAbsorb method.
Change-Id: I40e452455f5cb5d45d1fb3687f739fc8eae65560
/frameworks/base/core/java/android/widget/Scroller.java
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| 637d337b58d8eec6de19230a5dd5ca5581c0478d |
|
25-Aug-2010 |
Adam Powell <adamp@google.com> |
Merge overscrolling from gingerbread.
Change-Id: I3eb4413261b38ddd8c609d6153bdfd4ae46c6a0f
/frameworks/base/core/java/android/widget/Scroller.java
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| 04cdb78c6a2ac66505d0b29033353cfd7e2c3d78 |
|
15-Nov-2010 |
Gilles Debunne <debunne@google.com> |
New spline physics for list fling motion.
Change-Id: I72216acb29f1cd475682141701e1f2e56f52d527
/frameworks/base/core/java/android/widget/Scroller.java
|
| d348bb4feff72d047a1037537be2d334a00c380c |
|
15-Nov-2010 |
Gilles Debunne <debunne@google.com> |
Changes to scrolling physics
Spline curve for Scroller fling motion (debunne)
Flywheel motion for AbsListView
Change-Id: Ic1f226878745ff4c302dc6bd0752868fa182dd7b
/frameworks/base/core/java/android/widget/Scroller.java
|
| a655c635820425a4c98314c3ba02eb382229b45d |
|
12-Oct-2010 |
Romain Guy <romainguy@google.com> |
Actually store the newly computed deceleration.
Change-Id: Ib62470187ec7709340f04842748b9d8cb88ee0c2
/frameworks/base/core/java/android/widget/Scroller.java
|
| 4bede9e425875542976a422222510fa4056a8339 |
|
12-Oct-2010 |
Romain Guy <romainguy@google.com> |
Add an API to control AbsListView's friction.
Change-Id: Iafb08cd28703d282c369c472a5d85a22cc5dacb7
/frameworks/base/core/java/android/widget/Scroller.java
|
| 1b088be8bb304e4ab7a1896d3ec3b9df9d9cf68e |
|
24-Jul-2010 |
Adam Powell <adamp@google.com> |
Fix a bug that could cause flings to last too long using a Scroller
Bug 2866552
Change-Id: I6979b3da54ca2aeaf4583629e28ee81fa5bd70da
/frameworks/base/core/java/android/widget/Scroller.java
|
| b40c42f1ffa124cfbd5152007491c1d0b065592d |
|
29-Apr-2010 |
Adam Powell <adamp@google.com> |
Fix bug 2639949 - Don't stop a Scroller early
Change-Id: Ia827199a27d03289b6fa573dd6f2b13517943400
/frameworks/base/core/java/android/widget/Scroller.java
|
| 9d32d24dbd8a015c9d5c44ed4901d5a666eb8e7f |
|
30-Mar-2010 |
Adam Powell <adamp@google.com> |
Remove overscrolling
Change-Id: I7e9db8d8a9b8ef67f0c0c82bf57c9155b7ebabea
/frameworks/base/core/java/android/widget/Scroller.java
|
| 6579b0b4ac0e781efab044aaaf3f66447cf5e067 |
|
25-Mar-2010 |
Adam Powell <adamp@google.com> |
API refactoring for OverScroller.
OverScroller is no longer a child class of Scroller and several
Scroller methods that do not make sense for OverScroller and could
cause misbehaving edge cases have been removed or hidden and
deprecated.
Change-Id: Ie055b607bd3b36c47ab9798d5c9518aef686b474
/frameworks/base/core/java/android/widget/Scroller.java
|
| 0ee0a2ea57197cb2f03905454098d9a7a309f77b |
|
23-Mar-2010 |
Gilles Debunne <debunne@google.com> |
New edge effect when OverScrolled.
The constant force that was applied has been replaced by a spring force
when the OverScroller goes beyond valid position values.
Bounce coefficient can be set for each directions.
Change-Id: If7d506d3f35b3451f590c54d6c04a1deb8d9ca95
/frameworks/base/core/java/android/widget/Scroller.java
|
| 52964243dc95f74ac2ab9a96d031a36931a11931 |
|
24-Feb-2010 |
Gilles Debunne <debunne@google.com> |
New OverScroller with edge bouncing effect.
OverScroller has been made a Scroller child class. Both use a physical constant deceleration
force to compute the animation. OverScroller also includes a rubber edge bounce effect.
Approved by Jim Palmer.
Change-Id: I3f43a03694b8cb6bfa0784c2663b37c9c39322cc
/frameworks/base/core/java/android/widget/Scroller.java
|
| 278ce05b52a47a09d2177435b533f4ecb1b9c4da |
|
31-Aug-2009 |
Cary Clark <cary@android.com> |
accelerate consecutive flings
Use the fact that the scroller keeps track of the current velocity
to accelerate subsequent flings. The current velocity is added to
the new velocity if the flings are in the same general direction
and if the fling animation hasn't been aborted.
This makes it easier to move to the top or bottom of very large
pages (either in overview mode or reading mode) by taking
consecutive flings as a cue from the user that they want to
page faster. The user can stop the fling with any action as
before.
fixes http://b/issue?id=2066090
/frameworks/base/core/java/android/widget/Scroller.java
|
| d663dab7dbefb49877efd2976994fb94cfa4fbd0 |
|
08-May-2009 |
djken <djken2009@gmail.com> |
The comment lack of symbol # and parameter data type. This will cause compilation failed.
/frameworks/base/core/java/android/widget/Scroller.java
|
| c312942b773449f5c6a8a887052aec847ec73b2c |
|
05-May-2009 |
Cyril Mottier <cyrilmottier@gmail.com> |
Add of Javadoc comments on undocumented methods.
Use of a constant defined in SensorManager for computing deceleration.
/frameworks/base/core/java/android/widget/Scroller.java
|
| 935ae463d495d41155e27feb849768ad2b8b16db |
|
14-Apr-2009 |
Dianne Hackborn <> |
AI 145994: Integrate #145778 from Donut.
Automated import of CL 145994
/frameworks/base/core/java/android/widget/Scroller.java
|
| 9066cfe9886ac131c34d59ed0e2d287b0e3c0087 |
|
04-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //depot/cupcake/@135843
/frameworks/base/core/java/android/widget/Scroller.java
|
| d83a98f4ce9cfa908f5c54bbd70f03eec07e7553 |
|
04-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //depot/cupcake/@135843
/frameworks/base/core/java/android/widget/Scroller.java
|
| d24b8183b93e781080b2c16c487e60d51c12da31 |
|
11-Feb-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //branches/cupcake/...@130745
/frameworks/base/core/java/android/widget/Scroller.java
|
| 54b6cfa9a9e5b861a9930af873580d6dc20f773c |
|
21-Oct-2008 |
The Android Open Source Project <initial-contribution@android.com> |
Initial Contribution
/frameworks/base/core/java/android/widget/Scroller.java
|