Materials tab - PI-VR GmbH

» Modulesmaterials tabMaterials tab – TrueLightMaterials: PHONGCreates a TrueLightPhongMaterial. ThePhongMaterial uses the Phong shadingalgorithm which is an empirical modelof local illumination. It describes theway a surface reflects light as a combinationof the diffuse reflection of roughsurfaces with the specular reflection ofshiny surfaces. It is based on the factthat shiny surfaces have small intensespecular highlights, while dull surfaceshave large highlights that fall off moregradually.Material Settings» Diffuse Color: Sets the shader’s diffusereflection color. This is the colorthe shader adopts, when the light reflectionof the surface is spread to abrought range of directions.» Glossy Color: Sets the shader’s colourfor glossy reflections. Glossy reflectionsresult from irregularities of a surface at amicroscopic level. Reflection behavioris described by the law of reflectionwhich states that the direction of incoming light (incident ray) and the directionof outgoing light reflected (reflectedray) form the same angle with respect140