void drawHelp( arMasterSlaveFramework &fw )
{
static arTexture tex;
static bool init = false;
if( !init )
{
tex.readJPEG( "help.jpg" );
init = true;
}
static float size = 4;
static GLfloat v[4][3] =
{
{ -size / 2, -size / 2, 0.0001 },
{ size / 2, -size / 2, 0.0001 },
{ size / 2, size / 2, 0.0001 },
{ -size / 2, size / 2, 0.0001 }
};
glPushMatrix();
glMultMatrixf( ( ar_getNavMatrix() * fw.getMidEyeMatrix() * ar_TM( 0, 0, -5 ) ).v );
glClearColor( 1, 1, 1, 0 );
tex.activate();
glBegin( GL_QUADS );
glTexCoord2f( 0, 0 ); glVertex3fv( v[0] );
glTexCoord2f( 1, 0 ); glVertex3fv( v[1] );
glTexCoord2f( 1, 1 ); glVertex3fv( v[2] );
glTexCoord2f( 0, 1 ); glVertex3fv( v[3] );
glEnd();
tex.deactivate();
glPopMatrix();
}
// preExchange callback
// Purposes:
// - Handle navigation updates.
// - Process user input.
// - Set random variables.
// - Update shared memory.
// Notes:
// This is only called on the master node of the cluster and before shared memory is
// transferred to the slave nodes.
void preExchange(arMasterSlaveFramework& framework)
{
// Handle navigation update. The resulting navigation matrix is automatically transferred
// to the slave nodes.
framework.navUpdate();
currentTimeGlobal = framework.getTime();
double currentTime = framework.getTime();
// Process user input.
// Update shared memory.
// Transfer data about objects to slave nodes.
// Detect right hand collisions.
rightHand.detectCollisions(rightHand, objects);
// Extend left ray to collision point.
leftHand.extend(leftHand, objects);
// Update input state (placement matrix & button states) of our effectors.
rightHand.updateState(framework.getInputState());
leftHand.updateState(framework.getInputState());
// Handle any interaction with the objects (see interaction/arInteractionUtilities.h).
list<arInteractable*> objectlist;
std::copy(objects.begin (), objects.end (), std::back_inserter(objectlist));
ar_pollingInteraction(rightHand, objectlist);
ar_pollingInteraction(leftHand, objectlist);
// Play click sound if right hand has grabbed an object.
if(rightHand.getGrabbedObject() != 0)
{
dsLoop(clickSound, "click.mp3", -1, 1.0, arVector3(0, 0, 0));
}
// Or reset the trigger
else
{
dsLoop(clickSound, "click.mp3", 0, 1.0, arVector3(0, 0, 0));
}
// Update shared memory.
// Transfer data about objects to slave nodes.
vector<arInteractable*>::iterator i;
for(i=objects.begin(); i != objects.end(); ++i)
{
Object* oby = ((Object*)(*i));
oby->matrix = oby->getMatrix();
}
arMatrix4 navMatrix = ar_getNavMatrix();
}
