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31 lines
628 B
Matlab
31 lines
628 B
Matlab
function y = angle (x)
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a = [x(3) - x(1); x(4) - x(2)];
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b = [x(7) - x(5); x(8) - x(6)];
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y = acos(dot(a, b) / (norm(a) * norm(b))) / pi * 180;
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endfunction
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function y = f (x)
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y(1) = (
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(x(3) - x(1)) * (x(7) - x(5)) +
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(x(4) - x(2)) * (x(8) - x(6))
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) ^ 2;
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endfunction
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x0 = [100, 100, 600, 600, 700, 600, 900, 100];
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x = sqp(x0, @f);
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#pkg load optim;
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#x = bfgsmin('f', {reshape(x0, 8,1)}); #WORKS!
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l1 = [x(1), x(2); x(3), x(4)];
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l2 = [x(5), x(6); x(7), x(8)];
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plot(l1(:,1), l1(:,2), l2(:,1), l2(:,2), '-');
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#d = (x(3) - x(1)) * (x(7) - x(5)) + (x(4) - x(2)) * (x(8) - x(6)) ;
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disp("Angle: "), disp(angle(x));
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