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。
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Cx m"B)%?C# 是根据这篇
论文编的matlab代码。
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8aCa(Xu(H i8$tId 哪位大神指点一下
F,CQAgx clear;
3r=IO# H=20;
>+v)^7c a=100;
&hmyfH&S itheta=0;
/jI>=:z i=1;
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for theta=0:0.0001:pi/2
[CH%(#>i~ if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
U!@3[' itheta(i+1)=theta;
jW6~^>S i=i+1;
PI7M3\z end
{nH.
_ end
Pnb?NVP!^9 R=30;
f-5vE9G3y7 r=0;
dQ*3s>B[ for i=1:a
Ez^U1KKOE7 r(i+1)=sqrt(R^2/a+r(i)^2);
aHKv*-z- end
F+vgkqs@9 I(:,1)=sin(itheta);
@] .Ko[P~ I(:,2)=cos(itheta);
tzv&E0|d N=[0,1];
uS3s P=[0,5];
]A;zY%> O=[0,1];
N|eus3\E n=1.5896;
M*)}F for i=1:a;
zJ4 2%0g 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) );
3=!\>0;E- P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
&3VR)Bxn O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
]}/LNO*L" O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
I:s#,!> N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
Bb];qYuCO end
4LYeacL B P(:,3)=0;
YPAMf&jEF plot(P(:,1),P(:,2));
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