find points of intersection circle with line
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Hello,
I need to find and plot the points of intersection of the circle with each rectangle. Could you please help me?
I drew the circle like this:
pos = [0 0 3 3];
rectangle('Position',pos,'Curvature',[1 1])
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Accepted Answer
KSSV
on 26 May 2020
clc; clear all ;
C = [1.5 1.5] ; % center of cricle
r = 1.5 ; % radius of circle
%
x = 0:1:3 ;
y = 0:1:3 ;
[X,Y] = meshgrid(x,y) ;
%
th = linspace(0,2*pi) ;
xc = C(1)+r*cos(th) ;
yc = C(2)+r*sin(th) ;
L1 = [xc;yc] ;
% GEt intersecdtion points
% along X
[m,n] = size(X) ;
for i = 1:m
L2 = [X(i,:) ; Y(i,:)] ;
P{i} = InterX(L1,L2)
end
for i = 1:n
L2 = [X(:,i) Y(:,i)]' ;
Q{i} = InterX(L1,L2) ;
end
P = cell2mat([P Q]) ;
plot(xc,yc,'b') ;
hold on
plot(X,Y,'r')
plot(X',Y','r')
plot(P(1,:),P(2,:),'*k')
InterX can be downloaded from here: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function
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