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Date: Mon, 16 Dec 1996 23:39:36 GMTServer: NCSA/1.5Content-type: text/htmlLast-modified: Mon, 08 Apr 1996 13:53:21 GMTContent-length: 1787<html><head><title>Textbook Errors</title></head><body><h2>Errata for Watt, "3D Computer Graphics" <br> Second Edition, Addison Wesley</h2> The bulleted numbers refer to page number.<p><ul><li>18 <br>The first equation on the page has two mistakes. V^2 should read |V|^2.Also VW should read V dot W.<p><li>60<br>The third row, second column entry of T_view should be sin(phi) not sin(theta).<p><li>62 <br> The first 4x4 matrix is incorrect. It is not orthonormal and thus cannot be the product of two rotations.<p><li>72<br> 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."<p><li>73<br> Matrix equation (3.1) has an incorrect last COLUMN. It should read[0,0,1,0].<p><li>100<br> H=(L+V)/2 should read H=norm(L+V).<p><li>116<br> Equation (4.8) should have a set of brackets so that the "1/2" multiplies the entire expression.<p><li>117<br> Figure 4.27 is confusing at best. I think that the N vector should be H and the R vector should be V.<p><li>118<br> 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.<p><li>118<br> The second numbered bullet should read: "These values of eta ... "<p><li>120<br> Note that in the code the index of refraction is refered to as "mu". <p><li>130<br>In figure 5.4 the notation "Nt dot (P(t)-X)<0 implies S in inside" should read"F is inside".<p><li>138<br> 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".<p><li>187<br> In Figure 6.21 the parametric directions u and v are reversed.⌨️ 快捷键说明
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