drawBox3D.m

function drawBox3D(h,occlusion,corners,face_idx,orientation)

% set styles for occlusion and truncation
occ_col    = {'w','g','y','r'};

% draw projected 3D bounding boxes
if ~isempty(corners)
  for f=1:4
    line([corners(1,face_idx(f,:)),corners(1,face_idx(f,1))]+1,...
         [corners(2,face_idx(f,:)),corners(2,face_idx(f,1))]+1,...
         'parent',h(2).axes, 'color',occ_col{occlusion+2},...
         'LineWidth',6);
    line([corners(1,face_idx(f,:)),corners(1,face_idx(f,1))]+1,...
         [corners(2,face_idx(f,:)),corners(2,face_idx(f,1))]+1,...
         'parent',h(2).axes,'color','k','LineWidth',2);
  end
end

% draw orientation vector
if ~isempty(orientation)
  line([orientation(1,:),orientation(1,:)]+1,...
       [orientation(2,:),orientation(2,:)]+1,...
       'parent',h(2).axes,'color','w','LineWidth',6);
  line([orientation(1,:),orientation(1,:)]+1,...
       [orientation(2,:),orientation(2,:)]+1,...
       'parent',h(2).axes,'color','k','LineWidth',2);
end