Errata for Watt, "3D Computer Graphics"
Second Edition, Addison Wesley

• 18
  The first equation on the page has two mistakes. V^2 should read |V|^2. Also VW should read V dot W.

• 60
  The third row, second column entry of T_view should be sin(phi) not sin(theta).

• 62
  The first 4x4 matrix is incorrect. It is not orthonormal and thus cannot be the product of two rotations.

• 72
  The second constraint in the middle of the page should read: "Normalizing the range of zs values so that the range of d<=zv<=f maps into the range 0<=zs<=1."

• 73
  Matrix equation (3.1) has an incorrect last COLUMN. It should read [0,0,1,0].

• 100
  H=(L+V)/2 should read H=norm(L+V).

• 116
  Equation (4.8) should have a set of brackets so that the "1/2" multiplies the entire expression.

• 117
  Figure 4.27 is confusing at best. I think that the N vector should be H and the R vector should be V.

• 118
  The third equation on the page gives mu as a function of Fo. The mu should be eta, the index of refraction. The equation is just a rearranged version of the one above it.

• 118
  The second numbered bullet should read: "These values of eta ... "

• 120
  Note that in the code the index of refraction is refered to as "mu".

• 130
  In figure 5.4 the notation "Nt dot (P(t)-X)<0 implies S in inside" should read "F is inside".

• 138
  In Equation (5.2), the last "y2" in the equation for Nb should be "ys". The "Ns" on the right of the equation for Ns should be "Na".

• 187
  In Figure 6.21 the parametric directions u and v are reversed.