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view +draw/prompt_point.m @ 86:3c39dd714fb6

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In Curve: Added numerical FD differentiation if derivative is not supplied. Added arc length computation based on the derivative. Added arc length parameterization (but this function is very slow.). In +util: Added fzero_vec.m and integral_vec.m, which call fzero and integral but take vector arguments.
author Martin Almquist <martin.almquist@it.uu.se>
date Sun, 29 Nov 2015 14:28:53 +0100
parents 48b6fb693025
children 00eb5db89da5
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function [p, button] = prompt_point(s,varargin)
    default_arg('s',[])

    set(gcf,'Pointer','crosshair')

    if ~isempty(s)
        fprintf(s,varargin{:});
    end

    a = gca;

    function get_point(src,event)
        cp = a.CurrentPoint;
        p = cp(1,1:2)';
        a.ButtonDownFcn = [];
    end

    a.ButtonDownFcn = @get_point;
    waitfor(a,'ButtonDownFcn', [])

    set(gcf,'Pointer','arrow')

end