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。
.$DB\jJXjV ObIi$uJX (XJehdB0 zYdSg<[^ 是根据这篇
论文编的matlab代码。
^CTgo,uf6H cve(pkl PKR0y%Ar kL^;^!Nt 哪位大神指点一下
d3T|N\(DL clear;
ics H=20;
](NSpU|* a=100;
-9/YS itheta=0;
?L#C'Lz2+ i=1;
a
J[VX)"J for theta=0:0.0001:pi/2
4hztYOhJ{ if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
M|FwYF^ itheta(i+1)=theta;
]Ole#Lz}Q i=i+1;
:7IL|bA< end
C/e`O|G end
a=gTGG"9 R=30;
?]f+)tCMs r=0;
-B$oq8)n* for i=1:a
<\?ySto r(i+1)=sqrt(R^2/a+r(i)^2);
$Ha?:jSc end
WUAjb,eo I(:,1)=sin(itheta);
o(>!T=f I(:,2)=cos(itheta);
'/SMqmi N=[0,1];
"*#$$e53A P=[0,5];
x2/|i?ZO O=[0,1];
3j0/&ON n=1.5896;
.txgb for i=1:a;
7*OO k"9 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) );
WDKj)f9cy P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
e>1^i;f O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
_x z_D12 O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
{O#=%o[ N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
A) p}AEBc end
QY-P!JD P(:,3)=0;
Xca Y'k# plot(P(:,1),P(:,2));
Q5r cPU>A v*QobI