Autodesk 12812-051462-9011 User Guide 3 - Page 246

Click the map button to assign a map to the specular color. See Specular Mapping on page 5465. This button is a shortcut: you can also assign specular level mapping in the Raytrace Maps rollout on page 5509. The remaining controls in the Specular Highlight group depend on the active shader, as shown next to "Shading:" at the top of this rollout. These highlight controls are the same as for the Standard material shaders. These are the highlight controls available to Raytrace materials: ■ Anisotropic highlights on page 5449 ■ Blinn, Oren-Nayar-Blinn, and Phong highlights on page 5451 ■ Metal highlights on page 5452 NOTE Highlight controls that don't pertain to the current shader are labeled "N/A." Environment Specifies an environment map that overrides the global environment map. Both Reflect and Transparency use the scene-wide environment map unless you use this button to specify another map. With this control, you can use different environment maps on a per-object basis, or provide an environment to specified objects when the scene as a whole has none. This map overrides the scene-wide environment for both reflection and refraction. To override for refraction alone, see the Transparency Environment control in the Extended Parameters rollout. Use the check box to turn this map on or off. TIP You can use any map as the Raytrace environment, including the Reflect/Refract on page 5964 map. Reflect/Refract map is often adequate for getting the required look, and it usually renders more quickly than raytracing the entire scene, especially if the Raytrace material is transparent. If you are using Raytrace material just to get the glass to look right on a car's headlight or on a light bulb hanging in the middle of a room, turn off the raytracer and use an environment map instead. Lock button Locks the Environment map to the Transparency Environment map (found on the Extended Parameters rollout on page 5502). When on, the Transparency Environment map controls are disabled, and a map applied to the Raytrace Environment applies to the Transparency Environment as well. When off, the Transparency Environment map controls are enabled, and the Transparency Environment can have a different map assigned to it. Default=on. Changing this button's setting here also changes it on the Extended Parameters rollout on page 5502 and the Maps rollout on page 5509. Raytrace Material | 5501