function [ yValues_regress ] = calc_y_between_points( control_Pnts, x )
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
yValues_regress = zeros(1, numel(x));
for i=1:numel(x)
    for j=1:size(control_Pnts, 2) - 1
        if control_Pnts(1, j) <= x(i) && control_Pnts(1, j+1) >= x(i)
            p1x = control_Pnts(1, j);
            p2x = control_Pnts(1, j+1);

            p1y = control_Pnts(2, j);
            p2y = control_Pnts(2, j+1);
            break;
        end
    end

    if p1x > x(i) || p2x <x(i)
        warning('Warning: p1x = %d, p2x = %d, x(1, i) = %d\n', p1x, p2x, x(i));
    end

    yValues_regress(i) = ((p2y-p1y)/(p2x-p1x)*x(i)+(2*p1y*p2x-p2x*p1y-p1x*p2y)/(p2x-p1x));
end


end