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。
-D~%|).' h@wgd~X9 |e0`nn= 7cMv/g^h@ 是根据这篇
论文编的matlab代码。
Uoix UR5`ue ; YZJyk:H\ 2I{"XB 哪位大神指点一下
,"79P/C clear;
1yY0dOoLG) H=20;
kg\>k2h a=100;
6D_D' ;o itheta=0;
}SCM I4\ i=1;
-`6+UkOV[x for theta=0:0.0001:pi/2
*}W_+qo" if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
bi;1s'Y<D itheta(i+1)=theta;
"tpSg i=i+1;
L9#g)tf
8T end
C+&l<
fM& end
B4 }bVjs R=30;
"@8li^ r=0;
18:%~>.! for i=1:a
lU8Hd|@- r(i+1)=sqrt(R^2/a+r(i)^2);
+m,yA mEEd end
)@bQu~Y I(:,1)=sin(itheta);
,UE83j8D^ I(:,2)=cos(itheta);
@pU)_d!pJ N=[0,1];
\Y}8S/] P=[0,5];
^5
Tqy(M O=[0,1];
d m%8K6| n=1.5896;
<1M-Ro?5k for i=1:a;
y4fdq7i~}9 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) );
ufT`"i P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
X!g#T9kG O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
Jxm.cC5z. O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
@U}1EC{A N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
-z(+/ /K:# end
-A!%*9Z P(:,3)=0;
u\JNr}bL plot(P(:,1),P(:,2));
4H]L~^CD uM6+?A9@l