Copyright Goodheart-Willcox Co., Inc. 462 AutoCAD and Its Applications—Advanced from an old fi lm camera but is most useful for reversing the effects of a bump, cutout, or transparency map. In the Transforms category is the Link texture transforms check box. It is very important to check this check box if you are using the same map for different proper- ties in the material and need them to be synchronized in appearance. For example, to make a realistic tile fl oor, an image of tiles is applied to the color property. The same image map is also used as a bump map to make the grout look recessed. If the scaling is changed for the bump map, but the maps are not synchronized, the grout colors and indentations may not match. See Figure 17-24. By linking the texture transforms, all transform settings are the same. Transforms are not linked by default and if you turn on linking after you have made changes, the properties may not be synchronized. Linking must be turned on for each material map or it will not work. The properties in the Position category control the location of the map on the object and its rotation. The Offset property moves the image in the X and Y directions. The link button to the right of these text boxes locks the X and Y values together. It is off by default. The Rotation property allows you to rotate the image on the material. The properties in the Scale category control the size of the image. The Width and Height properties are locked together by default. This is important to maintain a proportional aspect ratio for the image. The properties can be unlocked, but be aware that entering different values for width and height will stretch and distort the image. The Repeat category is where you can set the image to tile or not tile. Tiling means that the image repeats as many times as it takes to cover the object. If tiling is turned off, there will only be one image on the object. For example, if you are using an image for a label on a box, tiling should be turned off. Otherwise, the box will be completely covered with labels. Checker A checker map creates a two-color checkerboard pattern. By default, the colors are black and white, but different colors or images can be used as well. This map type can be used for checkerboard pattern fl oor materials. However, by changing various properties, you can simulate many different effects and materials. A B Figure 17-24. A—This material has an image map assigned to the color and bump properties. B—If the bump map is not synchronized to transformations, it may not align with the grout lines if a property is transformed. A full-color image is provided on the companion website. www.g-wlearning.com/CAD/