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。
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w35J.zn 2.l Z:VLN 是根据这篇
论文编的matlab代码。
T_@K&< V'8s8H
Vzdh8)Mu\ p?);eJtV/ 哪位大神指点一下
.!$*:4ok clear;
VEqS;~[ H=20;
aI6$? wus a=100;
toya fHf itheta=0;
q Gw -tPD< i=1;
q)S^P> for theta=0:0.0001:pi/2
z(_Ss@ $ if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
K9$>Yxe| itheta(i+1)=theta;
C&*oI =6 i=i+1;
-@yh>8v end
]iN'x?Fo end
ko.(pb@+ R=30;
Q[vJqkgT r=0;
6*B1 9+- for i=1:a
4zev^FR r(i+1)=sqrt(R^2/a+r(i)^2);
lef2 X1w}! end
\`oT#|0 I(:,1)=sin(itheta);
y .#")IAF I(:,2)=cos(itheta);
!UG
7Uer N=[0,1];
k7?N ?7w P=[0,5];
h U`wVy O=[0,1];
{1V($aBl n=1.5896;
+Z7th7W/, for i=1:a;
\>jLRb|7Ts 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) );
OMWbZ>jB P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
%_+2@\ O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
u.d).da O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
^B(V4-| N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
|X0Y- end
5mJ JU P(:,3)=0;
U*(izD plot(P(:,1),P(:,2));
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