Copyright Goodheart-Willcox Co., Inc. 468 AutoCAD and Its Applications—Advanced Marble A marble map is a 3D map based on the colors and values you set. It is used to simulate natural stone. When you specify Marble as the map for a property, the texture editor displays the properties for the map, Figure 17-30. The viewport may not refl ect changes made in the texture editor, even if set to display materials and textures. You may have to render the scene to see the changes. A marble map is based on two colors—stone and vein. The Appearance category contains the Stone Color and Vein Color properties. You can swap the vein and stone colors by picking the button to the right of the color defi nition and selecting Swap Colors from the drop-down list. The Vein Spacing property determines the relative distance between each vein in the marble. The Vein Width property determines the rela- tive width of each vein. Each of these settings can range from 0.00 to 100.00. The Link texture transforms check box in the Transforms category works as described earlier for an image map. Refer to the Image section for details on texture transforms. Since this is a 3D (procedural) map, the properties in the Position category are different from those of the maps previously discussed. The three Offset properties move the map in the X, Y, and Z directions on the object. Simply enter a value in the text boxes. The XYZ Rotation properties control the rotation of the map around the X, Y, or Z axis. You can move the sliders or enter an angle in the text boxes. NOTE NOTE The mathematical calculations that create a 3D (procedural) map are based on the world coordinate system. If you move or rotate the object, a different result is produced. Set the stone color Set the vein color Define the map position Set the vein spacing and width Figure 17-30. Adjusting the properties of a marble map.