find orientation associated with the edge in delaunay triangulation

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Elysi Cochin 2017-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/361699-find-orientation-associated-with-the-edge-in-delaunay-triangulation

评论： Elysi Cochin 2017-10-17

i creates a Delaunay triangulation using the following lines

X = [y(:,1) x(:,1)];
dt = delaunayTriangulation(X);

How to find orientation associated with the edge to get (ThetaA, ThetaB, ThetaC)

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Answer 1

KSSV 2017-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/361699-find-orientation-associated-with-the-edge-in-delaunay-triangulation#answer_286161

You have vertices of triangle in hand...use this function:

https://in.mathworks.com/matlabcentral/fileexchange/37389-find-angles?focused=5234950&tab=function

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KSSV 2017-10-17

在 MATLAB Online 中打开

x = rand(10,1) ; % a randoms data 
y = rand(10,1) ;
dt = delaunayTriangulation(x,y) ;   % delaunay triangulation 
points = dt.Points ;    % points 
tri = dt.ConnectivityList ;    % nodal connectivity 
x = points(:,1) ;  
X = x(tri) ;
y = points(:,2) ;
Y = y(tri) ;
nel = size(tri,1) ;
Angles = zeros(nel,3) ;
for i = 1:nel
    Angles(i,:) = FindAngles([X(i,:)' Y(i,:)']) ;
end