void QuickTimeSampleApp::draw()
{
glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
glClear( GL_COLOR_BUFFER_BIT );
if( mMovie && mTexture ) {
mTexture.draw( 0, 0, getWindowWidth(), getWindowHeight() );
}
}
void ARTestApp::update()
{
ARMarkerInfo *marker_info; // Pointer to array holding the details of detected markers.
int marker_num; // Count of number of markers detected.
int j, k;
// Grab a video frame.
#if defined( USE_AR_VIDEO )
ARUint8 *image;
if ((image = arVideoGetImage()) != NULL) {
#else
if( mCapture->checkNewFrame() ) {
#endif
#if defined( USE_AR_VIDEO )
gARTImage = image; // Save the fetched image.
mTexture->enableAndBind();
#else
const fli::Surface8u &surface( mCapture->getSurface() );
mTexture->update( surface );
gARTImage = const_cast<uint8_t*>( surface.getData() );
#endif
gCallCountMarkerDetect++; // Increment ARToolKit FPS counter.
// Detect the markers in the video frame.
if (arDetectMarker(gARTImage, gARTThreshhold, &marker_info, &marker_num) < 0) {
exit(-1);
}
// check for known patterns
for( int i = 0; i < objectnum; i++ ) {
k = -1;
for( j = 0; j < marker_num; j++ ) {
if( object[i].id == marker_info[j].id) {
/* you've found a pattern */
if( k == -1 ) k = j;
else /* make sure you have the best pattern (highest confidence factor) */
if( marker_info[k].cf < marker_info[j].cf ) k = j;
}
}
if( k == -1 ) {
object[i].visible = 0;
continue;
}
/* calculate the transform for each marker */
if( object[i].visible == 0 ) {
arGetTransMat(&marker_info[k],
object[i].marker_center, object[i].marker_width,
object[i].trans);
}
else {
arGetTransMatCont(&marker_info[k], object[i].trans,
object[i].marker_center, object[i].marker_width,
object[i].trans);
}
object[i].visible = 1;
}
}
if( mLockedMode >= 0 ) {
for( int i = 0; i < objectnum; i++ ) {
object[i].visible = 0;
}
object[mLockedMode].visible = 1;
}
for( int mod = 0; mod < objectnum; ++mod )
mModules[mod]->update( this, object[mod].visible );
}
void ARTestApp::draw()
{
GLdouble p[16];
GLdouble m[16];
// Select correct buffer for this context.
glClearColor( 0, 0, 0, 1 ); // Clear the buffers for new frame.
gl::enableDepthWrite();
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); // Clear the buffers for new frame.
gl::disableDepthRead();
gl::disableDepthWrite();
gl::enableAlphaBlending();
if( object[0].visible || object[1].visible || object[2].visible )
mCurrentAlpha += ( 0.0f - mCurrentAlpha ) * 0.05f;
else
mCurrentAlpha += ( 1.0f - mCurrentAlpha ) * 0.05f;
gl::setMatricesScreenOrtho( getWindowWidth(), getWindowHeight() );
// draw the camera image centered
glColor4f( 1, 1, 1, 1 );//0.2f + mCurrentAlpha * 0.8f );
float width = ( getWindowHeight() * ( mTexture->getWidth() / (float)mTexture->getHeight() ) );
mTexture->draw( ( getWindowWidth() - width ) / 2.0f, 0, width, getWindowHeight() );
glDisable( mTexture->getTarget() );
#if defined( USE_AR_VIDEO )
arVideoCapNext();
gARTImage = NULL; // Image data is no longer valid after calling arVideoCapNext().
#endif
// Projection transformation.
arglCameraFrustumRH( &gARTCparam, VIEW_DISTANCE_MIN, VIEW_DISTANCE_MAX, p );
glMatrixMode( GL_PROJECTION );
glLoadMatrixd( p );
// Calculate the camera position relative to the marker.
// Replace VIEW_SCALEFACTOR with 1.0 to make one drawing unit equal to 1.0 ARToolKit units (usually millimeters).
for( int mod = 0; mod < objectnum; ++mod ) {
if( object[mod].visible ) {
arglCameraViewRH( object[mod].trans, m, VIEW_SCALEFACTOR );
glMatrixMode(GL_MODELVIEW);
glLoadMatrixd( m );
fli::Matrix44d mvd( m );
mModules[mod]->draw( this, mvd * Vec4d( 0, 0, 0, 1 ) );
}
}
}
