我写了一个测试代码,看看是否从跳跃动作中接受了我的轻击手势。 在运行代码之后,我注意到我必须非常积极地点击,即便如此,我也只能在每次点击时收到一次点击。 如何更改我的代码以防止这种情况?
(请注意,我对编码很新,所以请详细说明,谢谢)
文件#1
package com.leaptoarduino;
import com.leapmotion.leap.Controller;
import com.leapmotion.leap.Gesture;
public class Leapd
{
//Main
public static final void main(String args[])
{
//Initialize serial communications
RS232Protocol serial = new RS232Protocol();
serial.connect("COM3");
//Initialize the Leapd listener
LeapdListener leap = new LeapdListener(serial);
Controller controller = new Controller();
controller.addListener(leap);
controller.enableGesture(Gesture.Type.TYPE_KEY_TAP);
//Set up controller for gestures
controller.config().setFloat("Gesture.KeyTap.MinDownVelocity", 5.0f);
controller.config().setFloat("Gesture.KeyTap.HistorySeconds", .8f);
controller.config().setFloat("Gesture.KeyTap.MinDistance", 20.0f);
controller.config().save();
}
}
文件#2
package com.leaptoarduino;
import com.leapmotion.leap.*;
import com.leapmotion.leap.Gesture.Type;
import com.leapmotion.leap.KeyTapGesture;
public class LeapdListener extends Listener
{
//Serial port that will be used to communicate with the Arduino
private RS232Protocol serial;
//Constructor
public LeapdListener(RS232Protocol serial)
{
this.serial = serial;
}
//Member function: onInit
public void onInit(Controller controller)
{
System.out.println("Initialized");
}
//Member function: onConncect
public void onConnect(Controller controller)
{
System.out.println("Connected");
}
//Member Function: onDisconnect
public void onDisconnect(Controller controller)
{
System.out.println("Disconnected");
}
//Member Function: onExit
public void onExit(Controller controller)
{
System.out.println("Exited");
}
//Member Function: onFrame
public void onFrame(Controller controller)
{
//Get the most recent frame
Frame frame = controller.frame();
//Verify a hand is in view
if (frame.hands().count() > 0)
{
GestureList gestures = frame.gestures();
for (Gesture gesture: gestures)
{
if (gesture.type() == Type.TYPE_KEY_TAP)
{
KeyTapGesture keytap = new KeyTapGesture (gesture);
System.out.println("KEYTAPPED");
}
}
//Send the tap data to the Arduino
// TBD
//Give the Arduino some time to process our data
try { Thread.sleep(30); }
catch (InterruptedException e) { e.printStackTrace(); }
}
}
}
答案 0 :(得分:1)
当您在OnFrame处理程序中休眠线程时,您将错过Leap Motion服务中的帧。部分问题可能是在那些错过的帧中识别出轻击手势。 Frame.gestures()采用" sinceFrame"用于避免此问题的参数:frame.gestures(sinceFrame)
为您提供在sinceFrame和当前帧之间发生的所有手势,因此您不会在丢弃或跳过帧时丢失任何手势。您所做的是每次运行onFrame处理程序时将当前帧保存到lastFrameProcessed变量。您将此lastFrameProcessed变量传递给gestures()以获取完整的手势列表。类似的东西:
Frame lastFrameProcessed = Frame.invalid();
public void onFrame(Controller controller)
{
//Get the most recent frame
Frame frame = controller.frame();
//Verify a hand is in view
if (frame.hands().count() > 0)
{
GestureList gestures = frame.gestures(lastFrameProcessed);
for (Gesture gesture: gestures)
{
if (gesture.type() == Type.TYPE_KEY_TAP)
{
KeyTapGesture keytap = new KeyTapGesture (gesture);
System.out.println("KEYTAPPED");
}
}
//Send the tap data to the Arduino
// TBD
//Give the Arduino some time to process our data
try { Thread.sleep(30); }
catch (InterruptedException e) { e.printStackTrace(); }
}
lastFrameProcessed = frame;
}