STEP BY STEP ENHANCING A THREE-DIMENSIONAL MODEL
A three-dimensional CAD model of a city or building can start as a framework and then be developed graphically to suggest more detail. This can be done by introducing shadow, within the model, followed by texture and detail. The image can also be incorporated into a digital photograph of an existing background using Photoshop.
Create a model with your three-dimensional modeling software. In this example, SketchUp is used.
Turn off lines and cast shadow within your three-dimensional modeling software. ...