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。
0'2{[xF rnr8t]
r*xw\ i(;u6Rk 是根据这篇
论文编的matlab代码。
@Sd:]h:f- `CUO! 'U
1s\hJATfz L|'ME|
' 哪位大神指点一下
a^1c _ clear;
7I3CPc$ H=20;
?{Z0g+B1 a=100;
1:Gd{z itheta=0;
'aWZ#GS* i=1;
@*{BX~f
for theta=0:0.0001:pi/2
Xr;noV-X if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
bo/!u
s# itheta(i+1)=theta;
PP`n>v=n i=i+1;
6M|%nBN$| end
F}4 0 end
51'SA
B09 R=30;
0'oT {iN r=0;
W5uI(rS<6 for i=1:a
QQ8W;x r(i+1)=sqrt(R^2/a+r(i)^2);
?pY!sG end
=KD*+.'\/ I(:,1)=sin(itheta);
(6^k;j I(:,2)=cos(itheta);
-$ft `Ih N=[0,1];
nx]b\A P=[0,5];
F<WX\q O=[0,1];
',%&DA2 n=1.5896;
<LZvh8 for i=1:a;
*0zH5c 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) );
e)(| P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
D/`E!6Fk= O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
'$^ F.2 O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
,99G2Ev4c N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
]YzAcB.R end
.AW*7Pp`f P(:,3)=0;
}d]8fHG plot(P(:,1),P(:,2));
3%a37/|~y 7rg[5hP T