Javascript 基于跳跃运动的刷卡手势方向检测
我试图使用javascript API简单地通过跳跃动作获得滑动手势的方向。我的代码是:Javascript 基于跳跃运动的刷卡手势方向检测,javascript,jquery,gesture,leap-motion,Javascript,Jquery,Gesture,Leap Motion,我试图使用javascript API简单地通过跳跃动作获得滑动手势的方向。我的代码是: $(document).ready(function() { controller = new Leap.Controller("ws://localhost:6437/"); listener = new Leap.Listener(); listener.onFrame = function(controller) { var frame = controlle
$(document).ready(function() {
controller = new Leap.Controller("ws://localhost:6437/");
listener = new Leap.Listener();
listener.onFrame = function(controller) {
var frame = controller.frame();
var hands = frame.hands();
var pointables = frame.pointables();
var gestures = frame.gestures();
$("#rotationAxis").text(pointables.length);
$("#gestureDetected").text(gestures[0]);
}
controller.addListener(listener);
controller.enableGesture("swipe", true);
listener.onConnect = function(controller) {
// calibrate = new Leap.Calibrate(controller);
// calibrate.onComplete = function(screen){
// }
}
});
我可以从数组中获取当前手势,但无法获取类型或方向。有什么想法吗
谢谢。经过快速分析,我找到了您要查找的信息:
var gestureType = frame.gestures[0].type;
if (gestureType === "swipe")
{
if (frame.gestures[0].direction[0] > 0)
console.log(">>> swipe >>>");
else
console.log("<<< swipe <<<");
}
var gestureType=frame.signatures[0]。类型;
如果(手势类型==“滑动”)
{
if(帧.手势[0].方向[0]>0)
console.log(“>>>滑动>>>”;
其他的
console.log(“帧对象只有在有手势时才有手势。帧可以包含0个手、0个手指或0个手势。您必须检查是否有手势,然后检索所需信息
var frame = controller.frame();
if (frame.gestures.length > 0)
{
for (var i = 0; i < frame.gestures.length; i++)
{
var gesture = frame.gestures[i];
var type = gesture.type;
var direction = gesture.direction;
}
}
var frame=controller.frame();
如果(frame.signatures.length>0)
{
对于(变量i=0;i
带有启用手势:true和var手势=frame.signities[i]
// detect swipe
if (gesture.direction[0] > gesture.direction[2]) {
console.log('swipe left')
}
这是我自己做的,tbh我不能rem它是左还是右,但这不是一个很长的定义过程
var controller = new Leap.Controller({enableGestures: true});
controller.on('gesture', function (gesture){
console.log(gesture);
if(gesture.type === 'swipe'){
handleSwipe(gesture);
}
});
function handleSwipe (swipe){
var startFrameID;
if(swipe.state === 'stop'){
if (swipe.direction[0] > 0){
//this means that the swipe is to the right direction
moveRight();
}else{
//this means that the swipe is to the left direction
moveLeft();
}
}
}
controller.connect();
如果您关心向右、向左、向上或向下,则可以比较滑动方向向量的水平坐标和垂直坐标的绝对值,以查看滑动是更垂直还是更水平(然后将相关坐标比较为零,以查看滑动是向右还是向左,还是向上或向下):
//使用帧回调函数设置跳跃循环
var controllerOptions={enablespirates:true};
跳跃循环(控制器选项、功能(帧){
如果(frame.signatures.length>0){
对于(变量i=0;iMath.abs(手势方向[1]);
//分类为左右或上下
if(水平){
if(手势方向[0]>0){
swipeDirection=“右”;
}否则{
swipeDirection=“左”;
}
}else{//垂直
如果(手势方向[1]>0){
swipeDirection=“向上”;
}否则{
swipeDirection=“向下”;
}
}
}
}
}
})
通过稍微复杂一点的比较,您也可以将刷卡分为向前或向后。我在var gestureType=frame.signatures[0]上得到了“Uncaught TypeError:无法读取未定义的属性'type'。键入;抱歉,我的问题中应该注意到这一点。这是迄今为止最完整的示例。谢谢:)我讨厌人们不认为答案正确…
// Setup Leap loop with frame callback function
var controllerOptions = {enableGestures: true};
Leap.loop(controllerOptions, function(frame) {
if (frame.gestures.length > 0) {
for (var i = 0; i < frame.gestures.length; i++) {
var gesture = frame.gestures[i];
if (gesture.type == "swipe") {
//Classify swipe as either horizontal or vertical
var isHorizontal = Math.abs(gesture.direction[0]) > Math.abs(gesture.direction[1]);
//Classify as right-left or up-down
if(isHorizontal){
if(gesture.direction[0] > 0){
swipeDirection = "right";
} else {
swipeDirection = "left";
}
} else { //vertical
if(gesture.direction[1] > 0){
swipeDirection = "up";
} else {
swipeDirection = "down";
}
}
}
}
}
})