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author | wolfbeast <mcwerewolf@gmail.com> | 2018-05-12 11:09:44 +0200 |
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committer | wolfbeast <mcwerewolf@gmail.com> | 2018-05-12 11:09:44 +0200 |
commit | cfe5ef4ac7cd59f094b538252161ad74223c47da (patch) | |
tree | e5c0ee7e70db84bd2bfc6062784006769e9df730 /widget/gonk/libui/VelocityControl.cpp | |
parent | 28cf922aa9af4d4b8e0a3ce91dc1270a55986909 (diff) | |
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Remove Gonk build directories
Diffstat (limited to 'widget/gonk/libui/VelocityControl.cpp')
-rw-r--r-- | widget/gonk/libui/VelocityControl.cpp | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/widget/gonk/libui/VelocityControl.cpp b/widget/gonk/libui/VelocityControl.cpp deleted file mode 100644 index 31365a220..000000000 --- a/widget/gonk/libui/VelocityControl.cpp +++ /dev/null @@ -1,110 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define LOG_TAG "VelocityControl" -//#define LOG_NDEBUG 0 - -// Log debug messages about acceleration. -#define DEBUG_ACCELERATION 0 - -#include <math.h> -#include <limits.h> - -#include "VelocityControl.h" -#include <utils/BitSet.h> -#include <utils/Timers.h> - -namespace android { - -// --- VelocityControl --- - -const nsecs_t VelocityControl::STOP_TIME; - -VelocityControl::VelocityControl() { - reset(); -} - -void VelocityControl::setParameters(const VelocityControlParameters& parameters) { - mParameters = parameters; - reset(); -} - -void VelocityControl::reset() { - mLastMovementTime = LLONG_MIN; - mRawPosition.x = 0; - mRawPosition.y = 0; - mVelocityTracker.clear(); -} - -void VelocityControl::move(nsecs_t eventTime, float* deltaX, float* deltaY) { - if ((deltaX && *deltaX) || (deltaY && *deltaY)) { - if (eventTime >= mLastMovementTime + STOP_TIME) { -#if DEBUG_ACCELERATION - ALOGD("VelocityControl: stopped, last movement was %0.3fms ago", - (eventTime - mLastMovementTime) * 0.000001f); -#endif - reset(); - } - - mLastMovementTime = eventTime; - if (deltaX) { - mRawPosition.x += *deltaX; - } - if (deltaY) { - mRawPosition.y += *deltaY; - } - mVelocityTracker.addMovement(eventTime, BitSet32(BitSet32::valueForBit(0)), &mRawPosition); - - float vx, vy; - float scale = mParameters.scale; - if (mVelocityTracker.getVelocity(0, &vx, &vy)) { - float speed = hypotf(vx, vy) * scale; - if (speed >= mParameters.highThreshold) { - // Apply full acceleration above the high speed threshold. - scale *= mParameters.acceleration; - } else if (speed > mParameters.lowThreshold) { - // Linearly interpolate the acceleration to apply between the low and high - // speed thresholds. - scale *= 1 + (speed - mParameters.lowThreshold) - / (mParameters.highThreshold - mParameters.lowThreshold) - * (mParameters.acceleration - 1); - } - -#if DEBUG_ACCELERATION - ALOGD("VelocityControl(%0.3f, %0.3f, %0.3f, %0.3f): " - "vx=%0.3f, vy=%0.3f, speed=%0.3f, accel=%0.3f", - mParameters.scale, mParameters.lowThreshold, mParameters.highThreshold, - mParameters.acceleration, - vx, vy, speed, scale / mParameters.scale); -#endif - } else { -#if DEBUG_ACCELERATION - ALOGD("VelocityControl(%0.3f, %0.3f, %0.3f, %0.3f): unknown velocity", - mParameters.scale, mParameters.lowThreshold, mParameters.highThreshold, - mParameters.acceleration); -#endif - } - - if (deltaX) { - *deltaX *= scale; - } - if (deltaY) { - *deltaY *= scale; - } - } -} - -} // namespace android |