alpha ambient array atmosphere attenuation biped birth body bone bounce bucket buffer cage camera clip cloth collision color cone constraint cube curve cylinder death depth diffuse distance dope draft edge falloff fire flow fluid font force frame fur geometry ghost graph gravity group hair helper highlight horizon hull image intensity integrator keyframe lamp lattice lens lerp life light lighting logic loop map material mesh metaball model motion node object occlusion particle pass path pipeline pixel point polygon prism radiosity ragdoll ray reflection render rig rotation sample scan scene script shader shadow shape shine simulation skeleton sky smoke specular speed sphere spline spot surface tangent teapot text texture torus tracking transform tube unit velocity vertex voxel world