Dilation of an image

Dilation of image, plus custom dilate tool
Highlights the dilation of an image using a slider to control the scale factor associated with the dilation. The center of dilation is movable and the dilated image is transparent. Overlay the original "preimage" on top of the "image." Is a dilation an isometry? Use the customer too "Dilate by half" to automatically generate a dilated copy of a clicked object with scale factor of 1/2 about the origin. The custom tool is in the menubar under Tools.