由于在项目中要用json来进行cs间数据的传输(不敢苟同)，特地贴出构造json的代码。当然下载jsoncpp mater后用cmake编译，将jsoncpp中的inclue和生成的lib放到对应的
项目就可以使用了。
以下为c++构造json的代码，构造的是leapmotion的TrackingHand的数据：
std::string json;
Json::Value JRoot;
Json::FastWriter JWrite;
std::string Value;
JRoot["DeviceID"] = std::to_string(msg.device_id);
JRoot["HandNums"] = std::to_string(msg.tracking_event->nHands);
JRoot["FrameRate"] = std::to_string(msg.tracking_event->framerate);
JRoot["FrameID"] = std::to_string(msg.tracking_event->tracking_frame_id);
// fill LEAP_FRAME_HEADER
Json::Value JInfo;
JInfo["Reserved"] = ""; // msg.tracking_event->info.reserved
JInfo["FrameID"] = std::to_string(msg.tracking_event->info.frame_id);
JInfo["TimeStamp"] = std::to_string(msg.tracking_event->info.timestamp);
JRoot["Info"] =JInfo;
// fill LEAP_HAND
Json::Value JHand;
for (i = 0; i < msg.tracking_event->nHands; i++)
{
LEAP_HAND hand = msg.tracking_event->pHands[i];
JHand["HandID"] = std::to_string(hand.id);
JHand["HandFlag"] = std::to_string(hand.flags);
JHand["HandType"] = std::to_string(hand.type);
JHand["HandCfd"] = std::to_string(hand.confidence);
JHand["VisibleTime"] = std::to_string(hand.visible_time);
JHand["PchDis"] = std::to_string(hand.pinch_distance);
JHand["GrabAngle"] = std::to_string(hand.grab_angle);
JHand["PchStrth"] = std::to_string(hand.pinch_strength);
JHand["GrabStrth"] = std::to_string(hand.grab_strength);
JHand["HandID"] = std::to_string(hand.id);
//////////////////////////////////////////////////////////////////////////
// --- fill _LEAP_PALM ---
Json::Value JPalm;
Json::Value JVector;
// postion
JVector["HandX"] = std::to_string(hand.palm.position.x);
JVector["HandY"] = std::to_string(hand.palm.position.y);
JVector["HandZ"] = std::to_string(hand.palm.position.z);
JPalm["HandPos"] = JVector;
// stabilized_position
JVector.clear();
JVector["StabX"] = std::to_string(hand.palm.stabilized_position.x);
JVector["StabY"] = std::to_string(hand.palm.stabilized_position.y);
JVector["StabZ"] = std::to_string(hand.palm.stabilized_position.z);
JPalm["StabPos"] = JVector;
// velocity
JVector.clear();
JVector["VelocX"] = std::to_string(hand.palm.velocity.x);
JVector["VelocY"] = std::to_string(hand.palm.velocity.y);
JVector["VelocZ"] = std::to_string(hand.palm.velocity.z);
JPalm["Velocity"] = JVector;
// normal
JVector.clear();
JVector["NormalX"] = std::to_string(hand.palm.normal.x);
JVector["NormalY"] = std::to_string(hand.palm.normal.y);
JVector["NormalZ"] = std::to_string(hand.palm.normal.z);
JPalm["Normal"] = JVector;
// direction
JVector.clear();
JVector["DirX"] = std::to_string(hand.palm.direction.x);
JVector["DirY"] = std::to_string(hand.palm.direction.y);
JVector["DirZ"] = std::to_string(hand.palm.direction.z);
JPalm["Direction"] = JVector;
// orientation
JVector.clear();
JVector["OrientX"] = std::to_string(hand.palm.orientation.x);
JVector["OrientY"] = std::to_string(hand.palm.orientation.y);
JVector["OrientZ"] = std::to_string(hand.palm.orientation.z);
JVector["OrientZ"] = std::to_string(hand.palm.orientation.w);
JPalm["Orient"] = JVector;
// hand width
JPalm["PalmWidth"] = std::to_string(hand.palm.width);
JHand["Palm"] = JPalm;
// --- fill _LEAP_PALM ---
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
// fill LEAP_DIGIT digits[5];
Json::Value JDigit,JDigitValue;
std::string SDigitIndex = "Digit_";
for (int d = 0; d < 5; ++d)
{
JDigitValue.clear();
JDigitValue["DigitID"] = std::to_string(hand.digits[d].finger_id);
JDigitValue["DigitEx"] = std::to_string(hand.digits[d].is_extended);
// fill LEAP_BONE bones[4];
Json::Value JBone;
Json::Value JBoneValue;
std::string SBoneIndex = "Bone_";
for (int b = 0; b < 4; ++b)
{
// prev_joint
JVector.clear();
JVector["JPrevX"] = std::to_string(hand.digits[d].bones[b].prev_joint.x);
JVector["JPrevY"] = std::to_string(hand.digits[d].bones[b].prev_joint.y);
JVector["JPrevZ"] = std::to_string(hand.digits[d].bones[b].prev_joint.z);
JBoneValue["PrevJoint"] = JVector;
// next_joint
JVector.clear();
JVector["JNextX"] = std::to_string(hand.digits[d].bones[b].next_joint.x);
JVector["JNextY"] = std::to_string(hand.digits[d].bones[b].next_joint.y);
JVector["JNextZ"] = std::to_string(hand.digits[d].bones[b].next_joint.z);
JBoneValue["NextJoint"] = JVector;
// rotation
JVector.clear();
JVector["JRotX"] = std::to_string(hand.digits[d].bones[b].rotation.x);
JVector["JRotY"] = std::to_string(hand.digits[d].bones[b].rotation.y);
JVector["JRotZ"] = std::to_string(hand.digits[d].bones[b].rotation.z);
JVector["JRotW"] = std::to_string(hand.digits[d].bones[b].rotation.w);
JBoneValue["RotJonit"] = JVector;
// width
JBoneValue["BoneW"] = std::to_string(hand.digits[d].bones[b].width);
// append to array
std::string sIndex = SBoneIndex + std::to_string(b);
JBone[sIndex].append(JBoneValue);
}
JDigitValue["DigitBone"].append(JBone);
std::string SDitIndex = SDigitIndex + std::to_string(d);
JDigit[SDitIndex].append(JDigitValue);
}
JHand["Digits"] = JDigit;
// fill LEAP_DIGIT digits[5];
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
// fill LEAP_BONE arm
Json::Value JArm;
// prev_joint
JVector.clear();
JVector["JPrevX"] = std::to_string(hand.arm.prev_joint.x);
JVector["JPrevY"] = std::to_string(hand.arm.prev_joint.y);
JVector["JPrevZ"] = std::to_string(hand.arm.prev_joint.z);
JArm["PrevJoint"] = JVector;
// next_joint
JVector.clear();
JVector["JNextX"] = std::to_string(hand.arm.next_joint.x);
JVector["JNextY"] = std::to_string(hand.arm.next_joint.y);
JVector["JNextZ"] = std::to_string(hand.arm.next_joint.z);
JArm["NextJoint"] = JVector;
// rotation
JVector.clear();
JVector["JRotX"] = std::to_string(hand.arm.rotation.x);
JVector["JRotY"] = std::to_string(hand.arm.rotation.y);
JVector["JRotZ"] = std::to_string(hand.arm.rotation.z);
JVector["JRotW"] = std::to_string(hand.arm.rotation.w);
JArm["RotJonit"] = JVector;
// width
JArm["BoneW"] = std::to_string(hand.arm.width);
JHand["Arm"] = JArm;
// fill LEAP_BONE arm
//////////////////////////////////////////////////////////////////////////
JRoot["Hands"].append(JHand);
}
json = JWrite.write(JRoot);
最后想要查看构造的正确与否可以将代码中"json"变量的值拿出去验证(https://www.json.cn/)就行了。
再贴个解析出来的json串(最后有彩蛋)：
{
"DeviceID":"1",
"FrameID":"298913",
"FrameRate":"115.346146",
"HandNums":"2",
"Hands":[
{
"Arm":{
"BoneW":"61.879623",
"NextJoint":{
"JNextX":"-219.647354",
"JNextY":"196.839874",
"JNextZ":"208.424332"
},
"PrevJoint":{
"JPrevX":"-238.330124",
"JPrevY":"54.185333",
"JPrevZ":"438.286346"
},
"RotJonit":{
"JRotW":"0.899677",
"JRotX":"0.243542",
"JRotY":"-0.129851",
"JRotZ":"0.338242"
}
},
"Digits":{
"Digit_0":[
{
"DigitBone":[
{
"Bone_0":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"-191.811798",
"JNextY":"219.167618",
"JNextZ":"190.857361"
},
"PrevJoint":{
"JPrevX":"-191.811798",
"JPrevY":"219.167618",
"JPrevZ":"190.857361"
},
"RotJonit":{
"JRotW":"0.896689",
"JRotX":"0.392473",
"JRotY":"-0.008454",
"JRotZ":"-0.204554"
}
}
],
"Bone_1":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"-172.849060",
"JNextY":"250.039627",
"JNextZ":"161.486877"
},
"PrevJoint":{
"JPrevX":"-191.811798",
"JPrevY":"219.167618",
"JPrevZ":"190.857361"
},
"RotJonit":{
"JRotW":"0.868680",
"JRotX":"0.414059",
"JRotY":"-0.117013",
"JRotZ":"-0.245476"
}
}
],
"Bone_2":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"-163.903809",
"JNextY":"267.799438",
"JNextZ":"136.595779"
},
"PrevJoint":{
"JPrevX":"-172.849060",
"JPrevY":"250.039627",
"JPrevZ":"161.486877"
},
"RotJonit":{
"JRotW":"0.911201",
"JRotX":"0.323883",
"JRotY":"-0.066744",
"JRotZ":"-0.245678"
}
}
],
"Bone_3":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"-160.091751",
"JNextY":"276.344421",
"JNextZ":"122.617912"
},
"PrevJoint":{
"JPrevX":"-163.903809",
"JPrevY":"267.799438",
"JPrevZ":"136.595779"
},
"RotJonit":{
"JRotW":"0.924944",
"JRotX":"0.286938",
"JRotY":"-0.046536",
"JRotZ":"-0.244906"
}
}
]
}
],
"DigitEx":"1",
"DigitID":"0"
}
],
"Digit_1":[
{
"DigitBone":[
{
"Bone_0":[
{
"BoneW":"18.501911",
"NextJoint":{
"JNextX":"-208.199402",
"JNextY":"264.242004",
"JNextZ":"127.999382"
},
"PrevJoint":{
"JPrevX":"-212.821701",
"JPrevY":"229.425400",
"JPrevZ":"193.010773"
},
"RotJonit":{
"JRotW":"0.910385",
"JRotX":"0.217099",
"JRotY":"-0.113844",
"JRotZ":"0.333327"
}
}
],
"Bone_1":[
{
"BoneW":"18.501911",
"NextJoint":{
"JNextX":"-211.537537",
"JNextY":"282.540070",
"JNextZ":"93.282883"
},
"PrevJoint":{
"JPrevX":"-208.199402",
"JPrevY":"264.242004",
"JPrevZ":"127.999382"
},
"RotJonit":{
"JRotW":"0.904495",
"JRotX":"0.239123",
"JRotY":"-0.045722",
"JRotZ":"0.350169"
}
}
],
"Bone_2":[
{
"BoneW":"18.501911",
"NextJoint":{
"JNextX":"-206.084900",
"JNextY":"284.752228",
"JNextZ":"72.051674"
},
"PrevJoint":{
"JPrevX":"-211.537537",
"JPrevY":"282.540070",
"JPrevZ":"93.282883"
},
"RotJonit":{
"JRotW":"0.935405",
"JRotX":"0.006631",
"JRotY":"-0.134609",
"JRotZ":"0.326885"
}
}
],
"Bone_3":[
{
"BoneW":"18.501911",
"NextJoint":{
"JNextX":"-200.658875",
"JNextY":"282.459167",
"JNextZ":"61.624779"
},
"PrevJoint":{
"JPrevX":"-206.084900",
"JPrevY":"284.752228",
"JPrevZ":"72.051674"
},
"RotJonit":{
"JRotW":"0.920572",
"JRotX":"-0.166026",
"JRotY":"-0.192623",
"JRotZ":"0.296444"
}
}
]
}
],
"DigitEx":"1",
"DigitID":"1"
}
],
"Digit_2":[
{
"DigitBone":[
{
"Bone_0":[
{
"BoneW":"18.171335",
"NextJoint":{
"JNextX":"-226.011429",
"JNextY":"251.622314",
"JNextZ":"123.296440"
},
"PrevJoint":{
"JPrevX":"-223.207489",
"JPrevY":"224.329926",
"JPrevZ":"187.775940"
},
"RotJonit":{
"JRotW":"0.883107",
"JRotX":"0.187973",
"JRotY":"-0.067702",
"JRotZ":"0.424505"
}
}
],
"Bone_1":[
{
"BoneW":"18.171335",
"NextJoint":{
"JNextX":"-237.993973",
"JNextY":"266.651337",
"JNextZ":"83.287407"
},
"PrevJoint":{
"JPrevX":"-226.011429",
"JPrevY":"251.622314",
"JPrevZ":"123.296440"
},
"RotJonit":{
"JRotW":"0.868323",
"JRotX":"0.217599",
"JRotY":"0.044305",
"JRotZ":"0.443511"
}
}
],
"Bone_2":[
{
"BoneW":"18.171335",
"NextJoint":{
"JNextX":"-235.846161",
"JNextY":"267.563629",
"JNextZ":"57.283432"
},
"PrevJoint":{
"JPrevX":"-237.993973",
"JPrevY":"266.651337",
"JPrevZ":"83.287407"
},
"RotJonit":{
"JRotW":"0.894101",
"JRotX":"-0.002714",
"JRotY":"-0.044652",
"JRotZ":"0.445626"
}
}
],
"Bone_3":[
{
"BoneW":"18.171335",
"NextJoint":{
"JNextX":"-230.543823",
"JNextY":"264.094727",
"JNextZ":"45.663673"
},
"PrevJoint":{
"JPrevX":"-235.846161",
"JPrevY":"267.563629",
"JPrevZ":"57.283432"
},
"RotJonit":{
"JRotW":"0.871295",
"JRotX":"-0.212068",
"JRotY":"-0.126692",
"JRotZ":"0.424054"
}
}
]
}
],
"DigitEx":"1",
"DigitID":"2"
}
],
"Digit_3":[
{
"DigitBone":[
{
"Bone_0":[
{
"BoneW":"17.291178",
"NextJoint":{
"JNextX":"-239.961395",
"JNextY":"233.978210",
"JNextZ":"123.302673"
},
"PrevJoint":{
"JPrevX":"-230.537903",
"JPrevY":"215.799530",
"JPrevZ":"182.791992"
},
"RotJonit":{
"JRotW":"0.866890",
"JRotX":"0.164960",
"JRotY":"-0.003123",
"JRotZ":"0.470405"
}
}
],
"Bone_1":[
{
"BoneW":"17.291178",
"NextJoint":{
"JNextX":"-253.849365",
"JNextY":"242.561646",
"JNextZ":"85.362213"
},
"PrevJoint":{
"JPrevX":"-239.961395",
"JPrevY":"233.978210",
"JPrevZ":"123.302673"
},
"RotJonit":{
"JRotW":"0.852703",
"JRotX":"0.176807",
"JRotY":"0.097248",
"JRotZ":"0.481849"
}
}
],
"Bone_2":[
{
"BoneW":"17.291178",
"NextJoint":{
"JNextX":"-252.675171",
"JNextY":"240.414200",
"JNextZ":"59.940456"
},
"PrevJoint":{
"JPrevX":"-253.849365",
"JPrevY":"242.561646",
"JPrevZ":"85.362213"
},
"RotJonit":{
"JRotW":"0.867176",
"JRotX":"-0.047963",
"JRotY":"0.000907",
"JRotZ":"0.495686"
}
}
],
"Bone_3":[
{
"BoneW":"17.291178",
"NextJoint":{
"JNextX":"-247.781403",
"JNextY":"236.147919",
"JNextZ":"48.393864"
},
"PrevJoint":{
"JPrevX":"-252.675171",
"JPrevY":"240.414200",
"JPrevZ":"59.940456"
},
"RotJonit":{
"JRotW":"0.837786",
"JRotX":"-0.239632",
"JRotY":"-0.082136",
"JRotZ":"0.483679"
}
}
]
}
],
"DigitEx":"1",
"DigitID":"3"
}
],
"Digit_4":[
{
"DigitBone":[
{
"Bone_0":[
{
"BoneW":"15.359376",
"NextJoint":{
"JNextX":"-249.532898",
"JNextY":"214.969131",
"JNextZ":"124.431633"
},
"PrevJoint":{
"JPrevX":"-233.472839",
"JPrevY":"202.407516",
"JPrevZ":"178.985336"
},
"RotJonit":{
"JRotW":"0.817480",
"JRotX":"0.169040",
"JRotY":"0.055389",
"JRotZ":"0.547799"
}
}
],
"Bone_1":[
{
"BoneW":"15.359376",
"NextJoint":{
"JNextX":"-262.373535",
"JNextY":"215.837723",
"JNextZ":"94.423073"
},
"PrevJoint":{
"JPrevX":"-249.532898",
"JPrevY":"214.969131",
"JPrevZ":"124.431633"
},
"RotJonit":{
"JRotW":"0.802548",
"JRotX":"0.126218",
"JRotY":"0.156676",
"JRotZ":"0.561639"
}
}
],
"Bone_2":[
{
"BoneW":"15.359376",
"NextJoint":{
"JNextX":"-260.209167",
"JNextY":"211.480118",
"JNextZ":"77.153168"
},
"PrevJoint":{
"JPrevX":"-262.373535",
"JPrevY":"215.837723",
"JPrevZ":"94.423073"
},
"RotJonit":{
"JRotW":"0.797222",
"JRotX":"-0.134799",
"JRotY":"0.023760",
"JRotZ":"0.587964"
}
}
],
"Bone_3":[
{
"BoneW":"15.359376",
"NextJoint":{
"JNextX":"-253.844742",
"JNextY":"206.502640",
"JNextZ":"68.012405"
},
"PrevJoint":{
"JPrevX":"-260.209167",
"JPrevY":"211.480118",
"JPrevZ":"77.153168"
},
"RotJonit":{
"JRotW":"0.740522",
"JRotX":"-0.343066",
"JRotY":"-0.087623",
"JRotZ":"0.571188"
}
}
]
}
],
"DigitEx":"1",
"DigitID":"4"
}
]
},
"GrabAngle":"0.848613",
"GrabStrth":"0.114133",
"HandCfd":"1.000000",
"HandFlag":"0",
"HandID":"28",
"HandType":"0",
"Palm":{
"Direction":{
"DirX":"-0.161235",
"DirY":"0.465706",
"DirZ":"-0.870127"
},
"HandPos":{
"HandX":"-220.915405",
"HandY":"235.239944",
"HandZ":"142.128265"
},
"Normal":{
"NormalX":"0.658360",
"NormalY":"-0.606065",
"NormalZ":"-0.446371"
},
"Orient":{
"OrientX":"0.254479",
"OrientY":"-0.013294",
"OrientZ":"0.896022"
},
"PalmWidth":"91.388863",
"StabPos":{
"StabX":"0.000000",
"StabY":"0.000000",
"StabZ":"0.000000"
},
"Velocity":{
"VelocX":"-25.860853",
"VelocY":"-85.594162",
"VelocZ":"-41.230572"
}
},
"PchDis":"59.544933",
"PchStrth":"0.000000",
"VisibleTime":"20049724"
},
{
"Arm":{
"BoneW":"61.879623",
"NextJoint":{
"JNextX":"189.378983",
"JNextY":"168.299164",
"JNextZ":"143.473724"
},
"PrevJoint":{
"JPrevX":"301.308105",
"JPrevY":"-20.027906",
"JPrevZ":"303.288269"
},
"RotJonit":{
"JRotW":"0.833554",
"JRotX":"0.282167",
"JRotY":"0.354558",
"JRotZ":"-0.316003"
}
},
"Digits":{
"Digit_0":[
{
"DigitBone":[
{
"Bone_0":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"156.145264",
"JNextY":"192.888245",
"JNextZ":"132.860107"
},
"PrevJoint":{
"JPrevX":"156.145264",
"JPrevY":"192.888245",
"JPrevZ":"132.860107"
},
"RotJonit":{
"JRotW":"0.897244",
"JRotX":"0.398338",
"JRotY":"0.091845",
"JRotZ":"0.166868"
}
}
],
"Bone_1":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"129.954102",
"JNextY":"221.473648",
"JNextZ":"106.716789"
},
"PrevJoint":{
"JPrevX":"156.145264",
"JPrevY":"192.888245",
"JPrevZ":"132.860107"
},
"RotJonit":{
"JRotW":"0.856117",
"JRotX":"0.413238",
"JRotY":"0.222917",
"JRotZ":"0.215885"
}
}
],
"Bone_2":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"113.636452",
"JNextY":"239.761459",
"JNextZ":"86.080246"
},
"PrevJoint":{
"JPrevX":"129.954102",
"JPrevY":"221.473648",
"JPrevZ":"106.716789"
},
"RotJonit":{
"JRotW":"0.879721",
"JRotX":"0.373373",
"JRotY":"0.196345",
"JRotZ":"0.219391"
}
}
],
"Bone_3":[
{
"BoneW":"19.369673",
"NextJoint":{
"JNextX":"104.619759",
"JNextY":"249.744659",
"JNextZ":"75.787392"
},
"PrevJoint":{
"JPrevX":"113.636452",
"JPrevY":"239.761459",
"JPrevZ":"86.080246"
},
"RotJonit":{
"JRotW":"0.869678",
"JRotX":"0.390992",
"JRotY":"0.208069",
"JRotZ":"0.217930"
}
}
]
}
],
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}
],
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}
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}
]
}
],
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}
]
},
"GrabAngle":"0.396186",
"GrabStrth":"0.000000",
"HandCfd":"1.000000",
"HandFlag":"0",
"HandID":"30",
"HandType":"1",
"Palm":{
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"DirY":"0.443626",
"DirZ":"-0.896211"
},
"HandPos":{
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"HandY":"207.582916",
"HandZ":"79.192780"
},
"Normal":{
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"NormalY":"-0.613662",
"NormalZ":"-0.304873"
},
"Orient":{
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"OrientY":"0.089765",
"OrientZ":"0.893741"
},
"PalmWidth":"91.388863",
"StabPos":{
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"StabY":"0.000000",
"StabZ":"0.000000"
},
"Velocity":{
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"VelocY":"42.214321",
"VelocZ":"-3.315435"
}
},
"PchDis":"75.180557",
"PchStrth":"0.000000",
"VisibleTime":"4899710"
}
],
"Info":{
"FrameID":"298930",
"Reserved":"",
"TimeStamp":"1151030258906"
}
}
如果你有幸看到了这里，我也想由衷的说一句：fuck!!!