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authorwolfbeast <mcwerewolf@gmail.com>2018-05-12 11:09:44 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-05-12 11:09:44 +0200
commitcfe5ef4ac7cd59f094b538252161ad74223c47da (patch)
treee5c0ee7e70db84bd2bfc6062784006769e9df730 /widget/gonk/libui/VelocityControl.cpp
parent28cf922aa9af4d4b8e0a3ce91dc1270a55986909 (diff)
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Remove Gonk build directories
Diffstat (limited to 'widget/gonk/libui/VelocityControl.cpp')
-rw-r--r--widget/gonk/libui/VelocityControl.cpp110
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