1. A projective computing system, comprising: a base with a raised portion to provide a void formed between the base and a support surface to receive a touch sensitive mat within the void, wherein the touch sensitive mat contacts the raised portion of the base when received inside the void; an upright member formed to and extending upward from the base; a camera located above the touch sensitive mat, wherein the camera is to capture an image comprising at least a portion of the touch sensitive mat and an object in contact with the touch sensitive mat; an image-processor to generate an image of the object based on the captured image; and a projector assembly to project the image of the object with an artificial shadow adjacent to at least a portion of the image of the object, wherein the artificial shadow is a visual indicator that the image capture and image projection is complete.