sync with video frame about ofxqcar HOT 2 CLOSED

hey @vheun,
the ofxiOSVideoPlayer has a method where you can check if a new frame is available.
im not sure if there is a way of preventing ofxQCAR from drawing a frame...
you might be able to prevent the frame buffer from being cleared?
maybe draw everything into a FBO and only update the FBO only when a new video frame is available..?

from ofxqcar.

I solved it with a small hack. I assume that your hands never stand still and therefore every model view matrix contains entirely new values. Therefore when two matrices have identical values there is no new content. Just taking one number out of all the 16 is enough to test for that.

  if(QCAR.numOfMarkersFound()>0) {
            if(matrixOld == matrixTemp[0]._mat[0][0]) {
                updateDraw = false;
            }else{
                updateDraw = true;
            }
            matrixOld = matrixTemp[0]._mat[0][0];
        }else{
            updateDraw = true;

        }

        if(updateDraw) {
            renderContent();
        }

from ofxqcar.