478 Interiors Copyright Goodheart-Willcox Co., Inc. Photoreal-rendered digital models produce lifelike walk- throughs—simulated tours of interiors, fly-by anima- tions, and light and shadow renderings. To produce them, the designer must set up scenes. The process is somewhat like taking a photograph or filming a scene after finishing the setup in real life. Once the designer identifies the scenes, materials, and lighting, each scene is rendered. Rendering, the last step in an animation process, gives the final appearance to the models and animation with such visual effects as shading, texture- mapping, shadows, reflections, and motion blurs. The designer can easily modify the animation speed and views to achieve maximum understanding for the client. Walk-throughs are very helpful when clients or team members want to understand relationships between spaces or proportional volumes within a space. Rendering an animation takes time, and computer processing speed and memory. Cloud technologies greatly reduce time and costs by enabling users to produce compelling, photorealistic visualizations without tying up the desktop or using specialized rendering hardware. In some cases, designers will outsource—hire the services of a special- ized firm—to complete their models and renderings for efficiency and cost-related reasons. Popular software products to use for building digital models include ■ AutoCAD (Autodesk). Industry standard for CAD, it can produce three-dimensional models. It can generate perspectives, paraline, and orthographic drawings. ■ Revit (Autodesk). Revit® is the industry standard BIM software program for construction drawings. Chase Margaux Robbins, Sophomore Design Student, Colorado State University Figure 13-48 Designers use digital surface models to help clients easily visualize the design. Examine the images. Describe the differences between the initial drawings and how the drawings appear once the designer adds color and details. How might you use surface models when working with clients?