#!F-adobe-helvetica-medium-r-normal--18* #!N #!N #!Rtall213 Tangents, Normals, and Binormals Components #!N #!N #!N The "normals" component is used to specify a local surface normal for rendering purposes. The "tangents," "normals" and "binormals" components specify a local reference frame on a path; this is useful, for example, for twisted-ribbon representations of streamlines. #!N #!N Normals are used for, among other things, surface shading. By convention, the normals are expected to point out from the front of a surface, as defined in #!Lcolcom,dxall207 h Colors, Front Colors, and Back Colors Components #!EL . Normals are expected to have unit length. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Ltall215,dxall215 h Neighbors Component #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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