light tools模拟时都是中心暗,周围有亮圆环。
模拟光源为朗伯点光源。
*>aZc:: H~?*KcZ 0\
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fW& Q{AZ'XV 是根据这篇
论文编的matlab代码。
Y]~ HAv ' 3?.1~ "-J
.'^6QST R3B5-^s 哪位大神指点一下
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0<d
clear;
C#U<k0R H=20;
5\akI\ a=100;
FJsK5- itheta=0;
4|>
rwQ~t i=1;
x|@1wQ"6 for theta=0:0.0001:pi/2
>JKnGeF if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
"x#]i aDjf itheta(i+1)=theta;
a^*cZ?Ta i=i+1;
xFBh? end
cBz!U8( end
I.^X 2 R=30;
'}jf#C1$c r=0;
.'t (-eT, for i=1:a
l |08 r(i+1)=sqrt(R^2/a+r(i)^2);
3]O`[P,*% end
rc;7W: I(:,1)=sin(itheta);
xwTijSj I(:,2)=cos(itheta);
S}oG.r
9 N=[0,1];
pU?{0xZH P=[0,5];
wGEWr2$ O=[0,1];
ZYE' C n=1.5896;
&`9j)3^J. for i=1:a;
`Y\gSUhzS P(i+1,1)=( N(i,1)*P(i,1) + N(i,2)*P(i,2) ) / ( N(i,1) + N(i,2)*I(i+1,2)/I(i+1,1) );
W(;x\Nc7 P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
Ik`O.Q.} O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
E2^ KK:4s O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
i{o#3 N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
$Y8>_6%+T end
f ,tW_g P(:,3)=0;
cC^W2\ plot(P(:,1),P(:,2));
vuYO\u+ud 8)L'rW{q#