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## Copyright (C) 2024 David Legland
## 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
## documentation and/or other materials provided with the distribution.
##
## 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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## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
##
## The views and conclusions contained in the software and documentation are
## those of the authors and should not be interpreted as representing official
## policies, either expressed or implied, of the copyright holders.
function varargout = transformVector3d(varargin)
%TRANSFORMVECTOR3D Transform a vector with a 3D affine transform.
%
% V2 = transformVector3d(V1, TRANS);
% Computes the vector obtained by transforming vector V1 with affine
% transform TRANS.
% V1 has the form [x1 y1 z1], and TRANS is a [3x3], [3x4], or [4x4]
% matrix, with one of the forms:
% [a b c] , [a b c j] , or [a b c j]
% [d e f] [d e f k] [d e f k]
% [g h i] [g h i l] [g h i l]
% [0 0 0 1]
%
% V2 = transformVector3d(V1, TRANS) also works when V1 is a [Nx3xMxEtc]
% array of double. In this case, V2 has the same size as V1.
%
% V2 = transformVector3d(X1, Y1, Z1, TRANS);
% Specifies vectors coordinates in three arrays with same size.
%
% [X2 Y2 Z2] = transformVector3d(...);
% Returns the coordinates of the transformed vector separately.
%
%
% See also
% vectors3d, transforms3d, transformPoint3d
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2008-11-25, from transformPoint3d
% Copyright 2008-2023 INRA - TPV URPOI - BIA IMASTE
if nargin~=2 && nargin~=4
error('Invalid number of input arguments. Type ''help transformVector3d'' for details.');
end
% Extract only the linear part of the affine transform
trans = varargin{end};
trans(1:4,4) = [0; 0; 0; 1];
% Call transformPoint3d using equivalent output arguments
varargout = cell(1, max(1,nargout));
[varargout{:}] = transformPoint3d(varargin{1:end-1}, trans);
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