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。
,)3%@MwO \EF^Ag aMQfg51W: ?4Z`^uy 是根据这篇
论文编的matlab代码。
uc]]zI6 ~;nh|v/e /1ZRjf^ L=4%MyZ.e 哪位大神指点一下
T9.3 clear;
9~i=Af@ H=20;
!t/I
j ~o a=100;
Eb66GXF[ itheta=0;
oUrNz#U i=1;
BH"f\oc for theta=0:0.0001:pi/2
{\3ZmF if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
555j@ itheta(i+1)=theta;
?-w<H!Y7 i=i+1;
%fB]N end
{%W'Zx end
rEEoR'c6 R=30;
<7-:flQz~ r=0;
(Tt\6- for i=1:a
D?ojxHe r(i+1)=sqrt(R^2/a+r(i)^2);
34S0W]V end
8,unq3 I(:,1)=sin(itheta);
S-{=4b' I(:,2)=cos(itheta);
A)"?GK{* N=[0,1];
,@1rP 55 P=[0,5];
57 (bd0@8 O=[0,1];
5Fa.X|R~ n=1.5896;
ASA ]7qyO for i=1:a;
m,YBk<Bx 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) );
KQGdV{VFs P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
y&;ytNG&< O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
%0 cFs' O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
yOHVL~F N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
LbCcOkL/@@ end
WUnz P(:,3)=0;
>@?!-Fy5 plot(P(:,1),P(:,2));
Fo\* Cr9D VZhtx)