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。
7eQE[C 1g_(xwUp+ 6GxQ< RL|13CG OP 是根据这篇
论文编的matlab代码。
dDuT,zP Kn9O=?Xh; 9;Z2.P"w 4?#0fK 哪位大神指点一下
L53qQej< clear;
uCA!L)$ H=20;
N30w^W& a=100;
q|E0Y itheta=0;
] gN]Cw\L i=1;
wzw`9^B for theta=0:0.0001:pi/2
64Ot`=A" if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
8q)wT0A~ itheta(i+1)=theta;
zeqP:goy i=i+1;
q<Zdf end
nI1DLVt end
CYr2~0<g R=30;
=)56]ki} r=0;
~~U2Sr for i=1:a
s\c*ibxM, r(i+1)=sqrt(R^2/a+r(i)^2);
P;&rh U^[ end
-1tdyCez I(:,1)=sin(itheta);
ya81z4? I(:,2)=cos(itheta);
9Fe(],AzF N=[0,1];
=1dU~B:Lm P=[0,5];
"W_C%elg O=[0,1];
5lp
L$ n=1.5896;
~<M/<%o2* for i=1:a;
N4 O'{ 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) );
"J0,SFu: P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
6E9y[ %+ O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
GCxtW FXH O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
IAr N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
jL$&]sQ`O) end
E"ju<q/Q P(:,3)=0;
:n3)vK plot(P(:,1),P(:,2));
+39Vxe:Oy B]PTe~n^