Copyright Goodheart-Willcox Co., Inc. 458 AutoCAD and Its Applications—Advanced The Filter Color property controls the color of the self illumination effect. Pick in the edit box to open the Select Color dialog box. An image may be selected instead of a color. Black areas of the image are not illuminated. White areas of the image are illuminated. Grayscale values control how much the rest of the image illuminates the material. To apply a texture to control the illumination, pick the button next to the edit box to display a drop-down list. Luminance is expressed in candelas per square meter (cd/m2). For example, 1 cd/m2 is the equivalent of one candela of light radiating from a surface area that is one square meter. You can enter a specifi c value in the Luminance property text box. Or, you can pick the name displayed next to the text box to display a drop-down list with choices A B Set the filter color Luminance setting Pick to select a preset luminance Pick to apply a texture to the filter color Figure 17-19. / The effect of self illumination/luminance. A—The globe of this light bulb does not have any self illumination. B—Self illumination is applied to the globe material. Figure 17-20. Setting self illumination and luminance for a material. A full-color image is provided on the companion website. www.g-wlearning.com/CAD/