/usr/share/octave/packages/geometry-1.7.0/polynomialCurves2d/drawPolynomialCurve.m is in octave-geometry 1.7.0-1build1.
This file is owned by root:root, with mode 0o644.
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## Copyright (C) 2004-2011 INRA - CEPIA Nantes - MIAJ (Jouy-en-Josas)
## Copyright (C) 2012 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
## All rights reserved.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
## 1 Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
## 2 Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
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##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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## -*- texinfo -*-
## @deftypefn {Function File} {@var{h} =} drawPolynomialCurve (@var{bnd}, @var{xcoef}, @var{ycoef})
## @deftypefnx {Function File} {@var{h} =} drawPolynomialCurve (@var{bnd}, @var{coefs})
## @deftypefnx {Function File} {@var{h} =} drawPolynomialCurve (@dots{}, @var{npts})
## Draw a polynomial curve approximation
## @end deftypefn
function varargout = drawPolynomialCurve(tBounds, varargin)
## Extract input parameters
% polynomial coefficients for each coordinate
var = varargin{1};
if iscell(var)
xCoef = var{1};
yCoef = var{2};
varargin(1) = [];
elseif size(var, 1)==1
xCoef = varargin{1};
yCoef = varargin{2};
varargin(1:2) = [];
else
xCoef = var(1,:);
yCoef = var(2,:);
varargin(1) = [];
end
nPts = 120;
if ~isempty(varargin)
nPts = varargin{1};
end
# parametrization bounds
t0 = tBounds(1);
t1 = tBounds(end);
## Drawing the polyline approximation
# generate vector of absissa
t = linspace (t0, t1, nPts+1)';
# compute corresponding positions
pts = polynomialCurvePoint (t, xCoef, yCoef);
# draw the resulting curve
h = drawPolyline (pts);
if nargout > 0
varargout{1} = h;
end
endfunction
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