/* thread to execute display of camera frames */
void *showCameraWindow(void *arg)
{
CameraData_t *myCam = (CameraData_t *)arg;
Convexctx_t *cameraCtx;
IplImage *img = NULL;
const char *windowName = TT_CameraName(myCam->i);
cvNamedWindow(windowName,CV_WINDOW_AUTOSIZE);
for( ;key != KEY_ESC; ){
TT_CameraFrameBuffer(myCam->i, W, H, 0, 8, (unsigned char *)myCam->displayImage->imageData);
pthread_mutex_lock(&keyMutex);
if(myCam->i == 2){
img = compute_ContourTree(myCam->displayImage);
if(img)
cvShowImage(windowName, img);
else
cvShowImage(windowName, myCam->displayImage);
key = cvWaitKey(15); //delay atleast n ms for TT firmware propogation delay
if(img)
cvReleaseImage(&img);
}
else
cvShowImage(windowName, myCam->displayImage);
pthread_mutex_unlock(&keyMutex);
}
cvReleaseImage(&myCam->displayImage);
pthread_exit(NULL);
}
// Main application
int main( int argc, char* argv[] )
{
printf("== NaturalPoint Tracking Tools API Marker Sample =======---\n");
printf("== (C) NaturalPoint, Inc.\n\n");
printf("Initializing NaturalPoint Devices\n");
TT_Initialize();
// Do an update to pick up any recently-arrived cameras.
TT_Update();
// Load a project file from the executable directory.
printf( "Loading Project: project.ttp\n\n" );
CheckResult( TT_LoadProject("project.ttp") );
// List all detected cameras.
printf( "Cameras:\n" );
for( int i = 0; i < TT_CameraCount(); i++)
{
printf( "\t%s\n", TT_CameraName(i) );
}
printf("\n");
// List all defined rigid bodies.
printf("Rigid Bodies:\n");
for( int i = 0; i < TT_TrackableCount(); i++)
{
printf("\t%s\n", TT_TrackableName(i));
}
printf("\n");
int frameCounter = 0;
// Poll API data until the user hits a keyboard key.
while( !_kbhit() )
{
if( TT_Update() == NPRESULT_SUCCESS )
{
frameCounter++;
// Update tracking information every 100 frames (for example purposes).
if( (frameCounter%100) == 0 )
{
float yaw,pitch,roll;
float x,y,z;
float qx,qy,qz,qw;
bool tracked;
printf( "Frame #%d: (Markers: %d)\n", frameCounter, TT_FrameMarkerCount() );
for( int i = 0; i < TT_TrackableCount(); i++ )
{
TT_TrackableLocation( i, &x,&y,&z, &qx,&qy,&qz,&qw, &yaw,&pitch,&roll );
if( TT_IsTrackableTracked( i ) )
{
printf( "\t%s: Pos (%.3f, %.3f, %.3f) Orient (%.1f, %.1f, %.1f)\n", TT_TrackableName( i ),
x, y, z, yaw, pitch, roll );
TransformMatrix xRot( TransformMatrix::RotateX( -roll * kRadToDeg ) );
TransformMatrix yRot( TransformMatrix::RotateY( -yaw * kRadToDeg ) );
TransformMatrix zRot( TransformMatrix::RotateZ( -pitch * kRadToDeg ) );
// Compose the local-to-world rotation matrix in XZY (roll, pitch, yaw) order.
TransformMatrix worldTransform = xRot * zRot * yRot;
// Inject world-space coordinates of the origin.
worldTransform.SetTranslation( x, y, z );
// Invert the transform matrix to convert from a local-to-world to a world-to-local.
worldTransform.Invert();
float mx, my, mz;
int markerCount = TT_TrackableMarkerCount( i );
for( int j = 0; j < markerCount; ++j )
{
// Get the world-space coordinates of each rigid body marker.
TT_TrackablePointCloudMarker( i, j, tracked, mx, my, mz );
// Transform the rigid body point from world coordinates to local rigid body coordinates.
// Any world-space point can be substituted here to transform it into the local space of
// the rigid body.
Point4 worldPnt( mx, my, mz, 1.0f );
Point4 localPnt = worldTransform * worldPnt;
printf( "\t\t%d: World (%.3f, %.3f, %.3f) Local (%.3f, %.3f, %.3f)\n", j + 1,
mx, my, mz, localPnt[0], localPnt[1], localPnt[2] );
}
}
else
{
printf( "\t%s: Not Tracked\n", TT_TrackableName( i ) );
}
}
}
}
Sleep(2);
}
printf( "Shutting down NaturalPoint Tracking Tools\n" );
CheckResult( TT_Shutdown() );
printf( "Complete\n" );
while( !_kbhit() )
{
Sleep(20);
}
TT_FinalCleanup();
return 0;
}
