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。
m@Qt.4m%g !Yw3 d ~O]]N;>72" 1I*7SkgKv 是根据这篇
论文编的matlab代码。
oXDN+4ge Y)$ ;Ax-D IZm(`b;t^ =e}H'5?! 哪位大神指点一下
k~/>b~.c clear;
E^rbcGJ H=20;
C:uz6i1 a=100;
E%'~'[Q itheta=0;
[b/k3&O' i=1;
.(X
lg-H, for theta=0:0.0001:pi/2
F! X}(N?t if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
1$2D O itheta(i+1)=theta;
NFr:y<0>z i=i+1;
eXkujjSw" end
h8X g`C\ end
+R\vgE68 R=30;
>rP#ukr5 r=0;
[F*4EGB for i=1:a
UDe |Sb r(i+1)=sqrt(R^2/a+r(i)^2);
L3p` end
90#
;?# I(:,1)=sin(itheta);
{w8 NN-n I(:,2)=cos(itheta);
'Vr$MaO N=[0,1];
"&/]@)TPz P=[0,5];
)m&U#S _; O=[0,1];
eVR5Xar n=1.5896;
tdEnk.O for i=1:a;
Y(+^;Y3U 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) );
x%< P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
2iU7 0(H O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
e }*0ghKI O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
2qHf' N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
+@Ad1fJi end
i,nm`Z>u P(:,3)=0;
8LI-gp\ 2 plot(P(:,1),P(:,2));
8$c bVMjh `T2$4 >!