/usr/share/octave/packages/geometry-1.7.0/geom3d/createTranslation3d.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:
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## 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
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## -*- texinfo -*-
## @deftypefn {Function File} {@var{} =} createTranslation3d (@var{dx}, @var{dy}, @var{dz})
## @deftypefnx {Function File} {@var{} =} createTranslation3d (@var{vect})
## Create the 4x4 matrix of a 3D translation
##
## usage:
## TRANS = createTranslation3d(DX, DY, DZ);
## return the translation corresponding to DX and DY.
## The returned matrix has the form :
## [1 0 0 DX]
## [0 1 0 DY]
## [0 0 1 DZ]
## [0 0 0 1]
##
## TRANS = createTranslation3d(VECT);
## return the translation corresponding to the given vector [x y z].
##
## @seealso{transforms3d, transformPoint3d, transformVector3d,
## createRotationOx, createRotationOy, createRotationOz, createScaling3d}
## @end deftypefn
function trans = createTranslation3d(varargin)
if isempty(varargin)
# assert translation with null vector
dx = 0;
dy = 0;
dz = 0;
elseif length(varargin)==1
# translation vector given in a single argument
var = varargin{1};
dx = var(1);
dy = var(2);
dz = var(3);
else
# translation vector given in 3 arguments
dx = varargin{1};
dy = varargin{2};
dz = varargin{3};
end
# create the translation matrix
trans = [1 0 0 dx ; 0 1 0 dy ; 0 0 1 dz; 0 0 0 1];
endfunction
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