make virtual drawing with skeleton's hand

christina94

float theta1;
float theta2;
float yval;
float xval;



import SimpleOpenNI.*;

SimpleOpenNI  context;
color[]       userClr = new color[] { 
  color(255, 0, 0), 
  color(0, 255, 0), 
  color(0, 0, 255), 
  color(255, 255, 0), 
  color(255, 0, 255), 
  color(0, 255, 255)
};
//PVector com = new PVector();                                   
//PVector com2d = new PVector();                                   

void setup()
{
  size(960, 540);

  context = new SimpleOpenNI(this);
  if (context.isInit() == false)
  {
    println("Can't init SimpleOpenNI, maybe the camera is not connected!"); 
    exit();
    return;
  }

  context.setMirror(true);

  // enable depthMap generation 
  context.enableDepth();

  // enable skeleton generation for all joints
  context.enableUser();

  background(255, 255, 255);

  stroke(0, 255, 0);
  strokeWeight(3);
  smooth();
}

void draw()
{
  // update the cam
  context.update();
  background(255, 255, 255);
  textSize(20);

 float j= SimpleOpenNI.SKEL_RIGHT_HAND;
      float x= SimpleOpenNI.SKEL_LEFT_HAND;
      ellipse(x, j, k, k);
  // draw depthImageMap
  //image(context.depthImage(),0,0);
  //image(context.userImage(),0,0);

  // draw the skeleton if it's available
  int[] userList = context.getUsers();
  for (int i=0; i<userList.length; i++)
  {
    if (context.isTrackingSkeleton(userList[i]))
    {
      stroke(userClr[ (userList[i] - 1) % userClr.length ] );
      drawSkeleton(userList[i]);


    }
  }
}

// draw the skeleton with the selected joints
void drawSkeleton(int userId)
{
  // to get the 3d joint data
  /*
  PVector jointPos = new PVector();
   context.getJointPositionSkeleton(userId,SimpleOpenNI.SKEL_NECK,jointPos);
   println(jointPos);
   */



  PVector torso = new PVector(); 
  context.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_TORSO, torso);
  PVector convertedTorso = new PVector();
  context.convertRealWorldToProjective(torso, convertedTorso);


  PVector rightHand = new PVector(); 
  context.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_LEFT_HAND, rightHand);
  PVector convertedRightHand = new PVector();
  context.convertRealWorldToProjective(rightHand, convertedRightHand);
  //float rightEllipseSize = map(convertedRightHand.z, 700, 2500,  50, 1);
  ellipse(convertedRightHand.x, convertedRightHand.y, 10, 10);
  //text("hand: " + convertedRightHand.x + " " + convertedRightHand.y, 10, 50);
  //  yval = -(convertedRightHand.y-height/2);
  xval = (convertedRightHand.x-convertedTorso.x);
  //yval = map(convertedRightHand.y,0,height,1,-1);
  //xval = map(convertedRightHand.x,0,width,1,-1);
  //  if (xval>=0){
  //  theta1 = acos(yval/sqrt(sq(xval)+sq(yval)));
  //  }
  //  else{
  //  theta1 = -acos(yval/sqrt(sq(xval)+sq(yval)));
  //  }
  theta1 = PVector.angleBetween(new PVector(convertedRightHand.x-convertedTorso.x, convertedRightHand.y-convertedTorso.y, 0.0), new PVector(0, convertedTorso.y-height, 0.0));
  if (xval<0) {
    theta1*= -1;
  }

  PVector leftHand = new PVector(); 
  context.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_RIGHT_HAND, leftHand);
  PVector convertedLeftHand = new PVector();
  context.convertRealWorldToProjective(leftHand, convertedLeftHand);
  //float leftEllipseSize = map(convertedLeftHand.z, 700, 2500,  50, 1);
  ellipse(convertedLeftHand.x, convertedLeftHand.y, 10, 10);
  //yval = -(convertedLeftHand.y-height/2);
  xval = (convertedLeftHand.x-convertedTorso.x);
  //yval = map(convertedLeftHand.y,0,height,1,-1);
  //xval = map(convertedLeftHand.x,0,width,1,-1);
  theta2 = PVector.angleBetween(new PVector(convertedLeftHand.x-convertedTorso.x, convertedLeftHand.y-convertedTorso.y, 0.0), new PVector(0, convertedTorso.y-height, 0.0));
  if (xval<0) {
    theta2*= -1;
  }


  context.drawLimb(userId, SimpleOpenNI.SKEL_HEAD, SimpleOpenNI.SKEL_NECK);

  context.drawLimb(userId, SimpleOpenNI.SKEL_NECK, SimpleOpenNI.SKEL_LEFT_SHOULDER);
  context.drawLimb(userId, SimpleOpenNI.SKEL_LEFT_SHOULDER, SimpleOpenNI.SKEL_LEFT_ELBOW);
  context.drawLimb(userId, SimpleOpenNI.SKEL_LEFT_ELBOW, SimpleOpenNI.SKEL_LEFT_HAND);

  context.drawLimb(userId, SimpleOpenNI.SKEL_NECK, SimpleOpenNI.SKEL_RIGHT_SHOULDER);
  context.drawLimb(userId, SimpleOpenNI.SKEL_RIGHT_SHOULDER, SimpleOpenNI.SKEL_RIGHT_ELBOW);
  context.drawLimb(userId, SimpleOpenNI.SKEL_RIGHT_ELBOW, SimpleOpenNI.SKEL_RIGHT_HAND);

  context.drawLimb(userId, SimpleOpenNI.SKEL_LEFT_SHOULDER, SimpleOpenNI.SKEL_TORSO);
  context.drawLimb(userId, SimpleOpenNI.SKEL_RIGHT_SHOULDER, SimpleOpenNI.SKEL_TORSO);

  context.drawLimb(userId, SimpleOpenNI.SKEL_TORSO, SimpleOpenNI.SKEL_LEFT_HIP);
  context.drawLimb(userId, SimpleOpenNI.SKEL_LEFT_HIP, SimpleOpenNI.SKEL_LEFT_KNEE);
  context.drawLimb(userId, SimpleOpenNI.SKEL_LEFT_KNEE, SimpleOpenNI.SKEL_LEFT_FOOT);

  context.drawLimb(userId, SimpleOpenNI.SKEL_TORSO, SimpleOpenNI.SKEL_RIGHT_HIP);
  context.drawLimb(userId, SimpleOpenNI.SKEL_RIGHT_HIP, SimpleOpenNI.SKEL_RIGHT_KNEE);
  context.drawLimb(userId, SimpleOpenNI.SKEL_RIGHT_KNEE, SimpleOpenNI.SKEL_RIGHT_FOOT);  


  translate(convertedTorso.x+320, height);
  stroke(0);

}

// -----------------------------------------------------------------
// SimpleOpenNI events

void onNewUser(SimpleOpenNI curContext, int userId)
{
  println("onNewUser - userId: " + userId);
  println("\tstart tracking skeleton");

  curContext.startTrackingSkeleton(userId);
}

void onLostUser(SimpleOpenNI curContext, int userId)
{
  println("onLostUser - userId: " + userId);
}

void onVisibleUser(SimpleOpenNI curContext, int userId)
{
  //println("onVisibleUser - userId: " + userId);
}