1. A clone-brushing method of painting in an image, the method comprising: a) specifying a first world plane in the image; b) providing a source position and a destination position in the image; c) identifying a destination region in the image relative to the destination position; d) determining a source region in the image relative to the first world plane and corresponding to the destination region; e) transforming image information of the source region relative to the first world plane to image information of the destination region; and f) copying the transformed image information to the destination region.