| OCR Text |
Show 114 out The determination of in terms to three The scene. surface, the these are equal to in point either that assume dot the 40 Figure A are - light same for of two commonly In modelled as the to from and have been is carried vectors in vector normal the all In normal is chosen cases, (have in at of a on the we will positive These E. vector often the far Reflectivity Determining infinity. being yields can figure 40. Directions is which N vector consistency, direction eye that For in vector normallized the the surface the E, eyepoint. addition, illustrated point then pointing defined. the is certain N, are intensity opposite direction depending was Vector of source, to direction source each light 1). simplification the vector surface with product directions the assumed surface the way important the the from vectors length L, of the direction pointing most reflected directions the of the made is Thus the picture. away from to The the that assume vector eye object is L is so the also that |
