[x3d-public] ... X3D4 PBR Material textures: normalScale

[Don Brutzman]

normalScale questions:

a. Should normalScale have type SFVec3f instead of SFFloat?

b. Does normalScale only apply to provided Normal vector arrays, or to both provided and computed normal vectors?

c. Sometimes provide Normal vector arrays are not normalized, likely we want to note in specification prose that they should be normalized in range [0..1] before modification.

d. How to handle an initial or resulting normal value of (0 0 0) ?

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman