![]() ![]() ![]() Metals in particular can be represented using either the "specular reflectivity" option (which allows a specular colour to be defined for the material), or via measured material data (referred to as NK data). It is commonly used for materials such as polished wooden floors, car paints (when multiple Phong materials are blended together) and metals. The influence of this coating is controlled by its index of refraction (IOR), with higher values corresponding to a stronger specular reflection. The Phong material is a generalisation of the Diffuse material type, adding a glossy coating on top of the diffuse base (or "substrate"). Indigo Manual > Rendering with Indigo > Materials > Material Types Phong
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