Process of dragging is comfortable for transform
Process of dragging is comfortable for transform

When image is zoomed in, drag variation should be multiplied by transform value.

hiragram/YHImageViewer,hiragram/YHImageViewer,hiragram/YHImageViewer,wtshm/YHImageViewer,wtshm/YHImageViewer,wtshm/YHImageViewer,hiragram/YHImageViewer,wtshm/YHImageViewer