Autodesk 12812-051462-9011 User Guide 3 - Page 709

is the position in the object where the density color reaches its full Amount value. To have a lighter effect, increase the End value. To have a heavier effect, reduce the End value. Fog Density fog is also a thickness-based effect. It fills the object with a fog that is both opaque and self illuminated. The effect is like smoke trapped in a glass, or wax at the tip of a candle. Colored fog in tubular objects can resemble neon tubes. ■ Enable Turns fog on or off. ■ Color swatch Displays a Color Selector on page 391 for choosing the fog color. ■ Amount Controls the amount of density fog. Reducing this value reduces the density fog effect and makes the fog translucent. Range=0 to 1.0. Default=1.0. ■ Color Map Assigns a map to the fog component. Use the check box to enable or disable the map. ■ Start and End Start and End Distance controls, expressed in world units, adjust the fog effect based on the object's dimensions. Start is the position in the object where the density fog begins to appear (default=0.0). End is the position in the object where the density fog reaches its full Amount value. To have a lighter effect, increase the End value. To have a heavier effect, reduce the End value. Render objects inside raytraced objects Turns the rendering of objects inside raytraced objects on or off. Default=on. Render atmospherics inside raytraced objects Turns the rendering of atmospheric effects inside raytraced objects on or off. Atmospheric effects include fire, fog, volume light, and so on. Default=on. Treat Refractions as Glass (Fresnel effect) When on, applies a Fresnel effect to the refraction. This can add a bit of reflection to the refracting object, depending on the viewing angle of the object. When off, the object is refractive only. Default=on. Reflect/Refract Map Material Editor > Maps rollout > Click a Map button. > Material/Map Browser > Reflect/Refract 5964 | Chapter 19 Material Editor, Materials, and Maps