Mimi Yin NYU-ITP

Drawing skeleton joints and bones.

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​

// Declare kinectron

let kinectron = null;

​

// Variables for circle

let a = 0;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

​

  // Define and create an instance of kinectron

  kinectron = new Kinectron("10.17.201.104");

​

  // Connect with application over peer

  kinectron.makeConnection();

​

  // Request all tracked bodies and pass data to your callback

  kinectron.startTrackedBodies(bodyTracked);

​

  background(0);

}

​

function draw() {

  //Nothing to see here

}

​

function bodyTracked(body) {

  background(0, 10);

​

  // Draw all the joints

  //kinectron.getJoints(drawJoint);

​

  // Get all the joints off the tracked body and do something with them

​

  // Mid-line

  let head = scaleJoint(body.joints[kinectron.HEAD]);

  let neck = scaleJoint(body.joints[kinectron.NECK]);

  let spineShoulder = scaleJoint(body.joints[kinectron.SPINESHOULDER]);

  let spineMid = scaleJoint(body.joints[kinectron.SPINEMID]);

  let spineBase = scaleJoint(body.joints[kinectron.SPINEBASE]);

​

  // Right Arm

  let shoulderRight = scaleJoint(body.joints[kinectron.SHOULDERRIGHT]);

  let elbowRight = scaleJoint(body.joints[kinectron.ELBOWRIGHT]);

  let wristRight = scaleJoint(body.joints[kinectron.WRISTRIGHT]);

  let handRight = scaleJoint(body.joints[kinectron.HANDRIGHT]);

  let handTipRight = scaleJoint(body.joints[kinectron.HANDTIPRIGHT]);

  let thumbRight = scaleJoint(body.joints[kinectron.THUMBRIGHT]);

​

  // Left Arm

  let shoulderLeft = scaleJoint(body.joints[kinectron.SHOULDERLEFT]);

  let elbowLeft = scaleJoint(body.joints[kinectron.ELBOWLEFT]);

  let wristLeft = scaleJoint(body.joints[kinectron.WRISTLEFT]);

  let handLeft = scaleJoint(body.joints[kinectron.HANDLEFT]);

  let handTipLeft = scaleJoint(body.joints[kinectron.HANDTIPLEFT]);

  let thumbLeft = scaleJoint(body.joints[kinectron.THUMBLEFT]);

​

  // Right Leg

  let hipRight = scaleJoint(body.joints[kinectron.HIPRIGHT]);

  let kneeRight = scaleJoint(body.joints[kinectron.KNEERIGHT]);

  let ankleRight = scaleJoint(body.joints[kinectron.ANKLERIGHT]);

  let footRight = scaleJoint(body.joints[kinectron.FOOTRIGHT]);

​

  // Left Leg

  let hipLeft = scaleJoint(body.joints[kinectron.HIPLEFT]);

  let kneeLeft = scaleJoint(body.joints[kinectron.KNEELEFT]);

  let ankleLeft = scaleJoint(body.joints[kinectron.ANKLELEFT]);

  let footLeft = scaleJoint(body.joints[kinectron.FOOTLEFT]);

​

  // Pick 2 joints to connect

  let start = handRight;

  let end = handLeft;

​

  // Draw a line

  stroke(255);

  line(start.x, start.y, end.x, end.y);

  let d = dist(start.x, start.y, end.x, end.y);

​

  // Map the distance to angle speed

  let aspeed = map(d, 0, width, 0, PI/2);

  // Inverse, non-linear mapping

  //let aspeed = 1/d;

​

  a+=aspeed;

​

  noStroke();

    // Calculate circular pathway

  let x = cos(a)*width/4 + width/2;

  let y = sin(a)*width/4 + height/2;

  ellipse(x, y, 5, 5);

}

​

// Scale the joint position data to fit the screen

// 1. Move it to the center of the screen

// 2. Flip the y-value upside down

// 3. Return it as an object literal

function scaleJoint(joint) {

  return {

    x: (joint.cameraX * width / 2) + width / 2,

    y: (-joint.cameraY * width / 2) + height / 2,

  }

}

​

// Draw skeleton

function drawJoint(joint) {

​

  //console.log("JOINT OBJECT", joint);

  let pos = scaleJoint(joint);

​

  //Kinect location data needs to be normalized to canvas size

  stroke(255);

  strokeWeight(5);

  point(pos.x, pos.y);

}

​