acceleration

get the acceleration without gravity

陌路散爱 提交于 2019-12-05 02:06:32
问题 I'm new to android development. I want to get actual acceleration of the phone.I found a code to get acceleration.but it gives acceleration with gravity. Please any one help me to find a way to get actual acceleration without gravity. Here's the code i found,,Please help me with this code. thank you package com.SensorTest; import android.app.Activity; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware

Smooth grabbing

戏子无情 提交于 2019-12-05 02:05:21
问题 I've made a simple grabbing demo page. It doesn't have any easing/acceleration. I would like to do the same easing/acceleration as on kulesh.info (Flash website) using JavaScript. How can I do that? Any examples of smooth grabbing (scrolling, dragging) in JavaScript would be helpful as well as a language agnostic algorithm. 回答1: You can get the flash look by using an easing equation sometimes referred to as zeno's paradox. position += (destination - position) / damping I modified your

Optimization of OpenCV on android (neon-instruction, GLSL on tegra 3 )

我怕爱的太早我们不能终老 提交于 2019-12-04 19:30:22
I am now using some OpenCV functions in my Android application development. Since the frame rate is quite critical for the program, I am wondering how could I enable the optimization of OpenCV on android, since I have read about the newest version (2.4) of OpenCV use neon-instruction and GLSL for acceleration, is it automatically enabled? Or anything I need to put in the Android.mk file for compiling? (P.S. the Opencv Manager on android automatically download the "OCV 2.4 pack NVIDIA Tegra 3" alr) The "OCV 2.4 pack NVIDIA Tegra 3" package contains NEON and GLSL optimizations of OpenCV. If you

android - detect downward acceleration, specifically an elevator

点点圈 提交于 2019-12-04 19:14:00
I want to be able to detect a situation where the phone has an acceleration towards the ground (probably means that the Gravity sensor has to be used here also). I have read a lot about this topic in the Android docs, about High and Low pass filters and other posts, and right now what I have is a code sample that gets the acceleration in the X, Y and Z axis after stripping the gravity: if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) { final float alpha = (float) 0.8; gravity[0] = alpha * gravity[0] + (1 - alpha) * event.values[0]; gravity[1] = alpha * gravity[1] + (1 - alpha) * event

Stop deceleration of UIScrollView

匆匆过客 提交于 2019-12-04 17:06:48
问题 What's the best way to immediately stop the deceleration of an UIScrollView in iPhone 3.0? I would like to keep the deceleration of the UIScrollView until it naturally stops or the user performs a certain action, whatever happens first. Thanks! 回答1: Untested suggestion coming up:) When the button tap event is caught, you read what the [scrollView contentOffset].x is, and set the offset to this value with animation OFF. 来源: https://stackoverflow.com/questions/2037892/stop-deceleration-of

Can't accelerate pixel-modified BufferedImages

人走茶凉 提交于 2019-12-04 13:06:26
For quite a long time, 1-2 months, I have been trying to find an answer to this particular problem: I can't get my image hardware accelerated! I've been searching on the net, created my own methods, hit my head with the keyboard (still feel the pain) but no success. Although I hate libraries other than Java SDK, I tried LWJGL and JOGL but for some stupid reason they dont work on my computer. I tried using System.setProperty("Dsun.java2d.opengl", "True") , I used VolatileImage but I can't draw individual pixels to it.(I tried using drawLine(x,y,x,y) but it's slow) Now I am so desperate. I will

scroll window when mouse moves

久未见 提交于 2019-12-04 11:59:52
问题 Hello all What I mean is while the mouse is moving towards the edge of the window (x or y or both), I want the page to scroll, and when the mouse stops moving, I want the page to stop scrolling. There are numerous examples of how to scroll based on using a onClick event or a scroll zone at the edge of a window, but not much based on the movement of the mouse cursor. Any help would be much appreciated. 回答1: Web pages are already designed to scroll using the scroll bar, page/home/end/arrow keys

get the acceleration without gravity

谁说我不能喝 提交于 2019-12-03 18:23:34
I'm new to android development. I want to get actual acceleration of the phone.I found a code to get acceleration.but it gives acceleration with gravity. Please any one help me to find a way to get actual acceleration without gravity. Here's the code i found,,Please help me with this code. thank you package com.SensorTest; import android.app.Activity; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.os.Bundle; import android.widget.TextView; public class SensorTestActivity

Smooth grabbing

梦想的初衷 提交于 2019-12-03 16:46:18
I've made a simple grabbing demo page . It doesn't have any easing/acceleration. I would like to do the same easing/acceleration as on kulesh.info (Flash website) using JavaScript. How can I do that? Any examples of smooth grabbing (scrolling, dragging) in JavaScript would be helpful as well as a language agnostic algorithm. You can get the flash look by using an easing equation sometimes referred to as zeno's paradox. position += (destination - position) / damping I modified your jsFiddle to make use of it: Have a look If you'd like me to give a more detailed description of zeno's paradox,

How to calculate deceleration needed to reach a certain speed over a certain distance?

ぃ、小莉子 提交于 2019-12-03 12:37:01
问题 I've tried the typical physics equations for this but none of them really work because the equations deal with constant acceleration and mine will need to change to work correctly. Basically I have a car that can be going at a large range of speeds and needs to slow down and stop over a given distance and time as it reaches the end of its path. So, I have: V0 , or the current speed Vf , or the speed I want to reach (typically 0) t , or the amount of time I want to take to reach the end of my