function [ output_args ] = draw_triangles( point, triangle, unode )
% •¨‘ÌŒ`�ó‚ð•\Ž¦
    for row = triangle'
        i = row(1); j = row(2); k = row(3);
        xi = point(i,1); yi = point(i,2);
        xj = point(j,1); yj = point(j,2);
        xk = point(k,1); yk = point(k,2);
        ui = unode(2*i-1); vi = unode(2*i);
        uj = unode(2*j-1); vj = unode(2*j);
        uk = unode(2*k-1); vk = unode(2*k);
        xi = xi+ui; yi = yi+vi;
        xj = xj+uj; yj = yj+vj;
        xk = xk+uk; yk = yk+vk;
        %xi, yi, xj, yj, xk, yk
        plot([xi;xj;xk;xi],[yi;yj;yk;yi],'k-');
        hold on;
    end
end
