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。
@?7{%j* .i&ZT}v3
}wOpPN[4 71/ m.w 是根据这篇
论文编的matlab代码。
t-7U1B}=<C P&%eIgAOL
87pXv6'FQ hKZ`DB4 哪位大神指点一下
Cq*}b4^; clear;
7}cDGdr H=20;
UUMdZ+7 a=100;
9ze| s^ itheta=0;
?X#/1X%u: i=1;
pjHRV[`AP for theta=0:0.0001:pi/2
MYw8wwX0kJ if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
5%Oyvt]}2 itheta(i+1)=theta;
Ph#F<e(9 i=i+1;
MYhx'[4[3 end
}\u% )uZ end
rx6-~0!eI= R=30;
95^i/6Gl!P r=0;
8 ih;#I=q for i=1:a
f7Df %&d r(i+1)=sqrt(R^2/a+r(i)^2);
Q1nDl end
:`Uyn!w I(:,1)=sin(itheta);
Vp]D I(:,2)=cos(itheta);
]KXMGH_ N=[0,1];
"\/^/vn? P=[0,5];
t`Y!"l O=[0,1];
&(1H!
n=1.5896;
Rj}o4s2x for i=1:a;
@ 2!C^}d3F 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) );
fzS`dL5,W P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
-!|WZ O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
q1f=&kGX~ O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
n|x$vgb N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
bbNU\r5% end
|/;U)M P(:,3)=0;
%0yS98']g plot(P(:,1),P(:,2));
1^L`)Up p"[O#*p