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。
X~Hm.qIR D&G^|: G 8LUl@!4b z&CBjlh 是根据这篇
论文编的matlab代码。
I?_WV_T& o,{]<Sm -@.FnFa &.P G2f* 哪位大神指点一下
z-h?Q4; clear;
\4>& zb4 H=20;
e <+b?@}=B a=100;
Wu'9ouw! itheta=0;
Ugme>60`'k i=1;
C]Q}HI#G for theta=0:0.0001:pi/2
lLLPvW[Q if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
g1@rY0O itheta(i+1)=theta;
9V>C %I i=i+1;
RV%)~S@!R end
RSCQ`. end
F:8@ ]tA& R=30;
$3*y)Ny^ r=0;
~U5Tn3'~ for i=1:a
^0?ww&X r(i+1)=sqrt(R^2/a+r(i)^2);
}yw>d\] f end
JH*fxG I(:,1)=sin(itheta);
LQV&;O4' I(:,2)=cos(itheta);
BDLJDyf B N=[0,1];
_}.WRFIJ@L P=[0,5];
C9*[/| T O=[0,1];
i!iG7X)qT n=1.5896;
3gtKD9RL: for i=1:a;
t+D= @"BZP 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) );
V>c !V9w P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
yw{r:fy O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
bmJdZD7-<k O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
B qLL]%F N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
gH*(1* end
2Sk"S/4}Z P(:,3)=0;
5..YC=_20 plot(P(:,1),P(:,2));
x<PJ5G L yT[=!M