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。
<LE>WfmC 6SwHl_2% &nYmVwi?"Q V SxLBwXf 是根据这篇
论文编的matlab代码。
+}n]A^&I\E =}[V69a T+fU+GLD Q=[&~^Y) 哪位大神指点一下
mAMKCxz, clear;
lF<(yF5 H=20;
%rsW:nl a=100;
K67x.P Z itheta=0;
wU3Q i=1;
wJ}8y4O!N for theta=0:0.0001:pi/2
UcZ3v]$I if abs(integral(@(y)cos(y),itheta(i),theta)-1/a)<=0.00005
G7yxCU(I\ itheta(i+1)=theta;
:;EzvRy i=i+1;
_Z%C{~,7)x end
4%pvw;r end
1g@kHq R=30;
rRMC<.= r=0;
_LK(j;6K} for i=1:a
`is6\RH r(i+1)=sqrt(R^2/a+r(i)^2);
q7;)&_' end
84k;d; I(:,1)=sin(itheta);
@!-= :<h I(:,2)=cos(itheta);
OG.`\G| N=[0,1];
61]6N;kJ; P=[0,5];
_Nd\Cm O=[0,1];
607#d):Y n=1.5896;
4):\,>%pK for i=1:a;
8=$@azG 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) );
7HzKjR=B P(i+1,2)= P(i+1,1) * I(i+1,2) / I(i+1,1);
jN[Z mJz' O(i+1,1)=( r(i) - P(i+1,1) ) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2);
kAqk~. O(i+1,2)=(H-P(i+1,2)) / sqrt( (r(i)-P(i+1,1))^2 + (H-P(i+1,2))^2 );
5<u+2x8| N(i+1,=( O(i+1, - n*I(i+1,) / sqrt( 1 + n^2 - 2*n*dot(O(i+1,,I(i+1,) );
a*=e 3nS end
9i"3R0HN P(:,3)=0;
Yy&0b(m U plot(P(:,1),P(:,2));
`jJb) z3D 9:P)@UF