simpleopenni point cloud program with Kinect - processing

Question

I am trying to use processing to get the point cloud. But it turn out that it does not work
import SimpleOpenNI.*;
import processing.opengl.*;
SimpleOpenNI kinect;
void setup()
{
size( 1024, 768, OPENGL);
kinect = new SimpleOpenNI( this );
kinect.enableDepth();
}
void draw()
{
background( 0);
kinect.update();
translate( width/2, height/2, -1000);
rotateX( radians(180));
stroke(255);
PVector[] depthPoints = kinect.depthMapRealWorld();
//the program get stucked in the for loop it loops 307200 times and I don't have any points output
for( int i = 0; i < depthPoints.length ; i++)
{
PVector currentPoint = depthPoints[i];
point(currentPoint.x, currentPoint.y, currentPoint.z );
}
}

Answer 1

Your code if fine, just tested.
It loops 307200 times because it converts data from the depth image (640x480 = 307200) into 3D positions.
Are you sure you're not getting any errors ?
Also, drawing all the points in Processing is a bit slow, you might want to skip a few.
And as test, try to print out the 1st point and see if the value changes at all (it should)
or if the depth image has any data (isn't black/filled with zeroes):
import SimpleOpenNI.*;
import processing.opengl.*;
SimpleOpenNI kinect;
void setup()
{
size( 1024, 768, OPENGL);
kinect = new SimpleOpenNI( this );
kinect.enableDepth();
}
void draw()
{
background( 0);
kinect.update();
image(kinect.depthImage(),0,0,160,120);//check depth image
translate( width/2, height/2, -1000);
rotateX( radians(180));
stroke(255);
PVector[] depthPoints = kinect.depthMapRealWorld();
//the program get stucked in the for loop it loops 307200 times and I don't have any points output
for( int i = 0; i < depthPoints.length ; i+=4)//draw point for every 4th pixel
{
PVector currentPoint = depthPoints[i];
if(i == 0) println(currentPoint);
point(currentPoint.x, currentPoint.y, currentPoint.z );
}
}