How can i find the intersection between circle(function) and line(function) ?

Question

Kihun Moon 2018-5-3

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https://ww2.mathworks.cn/matlabcentral/answers/398750-how-can-i-find-the-intersection-between-circle-function-and-line-function

编辑： KSSV 2018-5-3

I want to find intersection point between circle and line, but there are many line in my problem.(the number of circle is one) so there are many intersection points. How can i solve this problem effectively ?

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Answer 1

Yuvaraj Venkataswamy 2018-5-3

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https://ww2.mathworks.cn/matlabcentral/answers/398750-how-can-i-find-the-intersection-between-circle-function-and-line-function#answer_318388

编辑：KSSV 2018-5-3

Check this link.

https://in.mathworks.com/matlabcentral/answers/6309-find-intersection-between-line-and-circle

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Answer 2

KSSV 2018-5-3

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/398750-how-can-i-find-the-intersection-between-circle-function-and-line-function#answer_318389

在 MATLAB Online 中打开

Use InterX function from file exchange. Use this link to download the function: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function

% circle 
th = linspace(0,2*pi) ;
x1 = cos(th) ;
y1 = sin(th) ;
L1 = [x1 ; y1] ;
% line
x2 = rand(1,2) ;
y2= rand(1,2) ;
L2 = [x2 ; y2] ;
figure
hold on
plot(x1,y1,'b') ;
plot(x2,y2,'r') ;
P = InterX(L1,L2) ;
plot(P(1),P(2),'*r') ;