In supplementary materials, we provide dozens of gif files which present the unrolling procedure of our Doodle-SDQ model in different media types. In the gif files, the
location of the pen is shown as a green dot added for visualization. Indeed, we construct a distance map to encode the position of the pen during training and testing, rather than using a green dot. Besides, the left panel of the images is the drawing after 100 steps and the right is the reference image.