void RenderContainer::renderObjects(IplImage* frame)
{
CvRect dirtyRT;
dirtyRT.x = -1;
dirtyRT.y = -1;
std::list<RenderObject *>::const_iterator itr = _objlist.begin();
for (;itr != _objlist.end() ; ++itr) {
RenderObject * current = *itr;
if (!current->getVisible()) continue;
CvRect ObjRect;
ObjRect.x = current->getX();
ObjRect.y = current->getY();
ObjRect.width = current->getWidth();
ObjRect.height = current->getHeight();
if (!current->getDirtyFlag()) {
CvRect intersect = cvRectIntersection(dirtyRT, ObjRect);
if (intersect.width<=0 || intersect.height<=0) {
continue;
}
}
current->renderSelf(frame);
dirtyRT.x = std::min(dirtyRT.x, ObjRect.x);
dirtyRT.y = std::min(dirtyRT.y, ObjRect.y);
int mergedRight = std::max(dirtyRT.x + dirtyRT.width, ObjRect.x + ObjRect.width);
int mergedBottom = std::max(dirtyRT.y + dirtyRT.height, ObjRect.y + ObjRect.height);
dirtyRT.width = mergedRight - dirtyRT.x;
dirtyRT.height = mergedBottom - dirtyRT.y;
}
}
