Copyright Goodheart-Willcox Co., Inc. Chapter 17 Materials in AutoCAD 457 A C B Figure 17-16. Note the effect of refraction on the grout lines in the tile floor behind this drinking glass. The default refraction setting for glass is 1.52. Pick to assign a texture Pick to assign an image Figure 17-17. Adding a cutout map to a material. Figure 17-18. The effect of applying an image to the Cutouts property. A—This black and white image will be used as the cutout map. B—The material on the plane is completely opaque. C—When the cutout map is applied to the material, the dark areas of the map produce transparent areas on the object. A full-color image is provided on the companion website. www.g-wlearning.com/CAD/ A full-color image is provided on the companion website. www.g-wlearning.com/CAD/