saito obj loader (OpenGL)+ SimpleOpenNI= help needed!!!?!?!

julialc4

saito obj loader (OpenGL)+ SimpleOpenNI= help needed!!!?!?!

in Contributed Library Questions • 1 year ago

i am trying to track the user's CoM ("center of mass") via kinect and the SimpleOpenNI library

and then attaching the rotation of a 3D object to the PVector of the CoM of the user...

essentially I am trying to make it so that when i move around there is a 3D object following my movements by rotating back and forth...

this is the code i have so far but i am having trouble with it. ...

the object will appear in the far top right corner, which has to do with model orientation i am sure...

but i also tried model.rotation, and using rotation instead of model orientation.. i got glitchy results with the object scaling back and forth based on position of the CoM...

any suggestions, i know there must be a more simple way to do this...

thanks...

import processing.opengl.*;

import saito.objloader.*;

import SimpleOpenNI.*;

SimpleOpenNI kinect;

//declare object called model

OBJModel model;

float rotX;

float rotY;

float rotZ;

int Scal = 40;

void setup()

{

size(600, 600, OPENGL);

smooth();

// making an object called "model" that is a new instance of OBJModel

model = new OBJModel(this, "bone.obj", "relative", TRIANGLES);

model.load("bone.obj");

stroke(255);

// turning on the debug output (it's all the stuff that spews out in the black box down the bottom)

model.enableDebug();

model.scale(Scal);

noStroke();

kinect = new SimpleOpenNI(this);

kinect.enableDepth();

kinect.enableUser(SimpleOpenNI.SKEL_PROFILE_NONE);

}

void draw()

{

background(255);

lights();

kinect.update();

IntVector userList = new IntVector();

kinect.getUsers(userList);

for (int i=0; i<userList.size(); i++) {

int userId = userList.get(i);

PVector position = new PVector();

kinect.getCoM(userId, position);

PVector modelOrientation = new PVector(1,0,0);

float angle = acos(modelOrientation.dot(position));

PVector axis = modelOrientation.cross(position);

pushMatrix();

translate(position.x, position.y, position.z);

rotateX(rotX);

rotateY(rotY);

rotateZ(rotZ);

//rotate(angle, axis.x, axis.y, axis.z);

model.draw();

popMatrix();

}

Replies(1)

julialc4

Re: saito obj loader (OpenGL)+ SimpleOpenNI= help needed!!!?!?!

1 year ago

Hi ghrls!

I got this to work!!!! check it out!!

here is the code i figured out:

import SimpleOpenNI.*;

import processing.opengl.*;

import saito.objloader.*;

SimpleOpenNI kinect;

//declare object called model

OBJModel model;

float rotX;

float rotY;

float rotZ;

void setup()

{

size(600, 600, OPENGL);

smooth();

frameRate(30);//change

model = new OBJModel(this, "bone.obj", "absolute", TRIANGLES);

model.load("bone.obj");

stroke(255);

model.enableDebug();

model.scale(40);

model.translateToCenter();//change

noStroke();

kinect = new SimpleOpenNI(this);

kinect.enableDepth();

kinect.enableUser(SimpleOpenNI.SKEL_PROFILE_NONE);

}

void draw()

{

background(255);

lights();

kinect.update();

IntVector userList = new IntVector();

kinect.getUsers(userList);

for (int i=0; i<userList.size(); i++) {

int userId = userList.get(i);

PVector userposition = new PVector();

kinect.getCoM(userId, userposition);

PVector modelrotation = new PVector(userposition.x,userposition.y,userposition.z);

//float angle = acos(modelrotation.dot(userposition));

//PVector axis = modelrotation.cross(userposition);

pushMatrix();

translate(width/2, height/2, 0);

rotateX(radians(modelrotation.x));

rotateY(radians(modelrotation.y));

rotateZ(radians(modelrotation.z));

model.draw();

popMatrix();

}

HOWEVER, it runs really slowly and not smoothly at all. Lots of kinks to work out. Let me know if you have any advice for cleaning up this code...

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