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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
## ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
## 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,
## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## 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 h = drawPoint3d(varargin)
%DRAWPOINT3D Draw 3D point on the current axis.
%
% drawPoint3d(X, Y, Z)
% will draw points defined by coordinates X, Y and Z.
% X, Y and Z are N*1 array, with N being number of points to be drawn.
%
% drawPoint3d(COORD) packs coordinates in a single [N*3] array.
%
% drawPoint3d(..., OPT) will draw each point with given option. OPT is a
% string compatible with 'plot' model.
%
% drawPoint3d(AX,...) plots into AX instead of GCA.
%
% H = drawPoint3d(...) returns a handle H to the line object
%
% Example
% % generate points on a 3D circle
% pts = circleToPolygon([40 30 20], 120);
% mat = eulerAnglesToRotation3d([30 20 10]);
% pts3d = transformPoint3d([pts zeros(120,1)],mat);
% figure; drawPoint3d(pts3d, 'b.');
% view(3); axis equal;
%
% See also
% points3d, clipPoints3d, drawPoint
%
% ------
% Author : David Legland
% E-mail: david.legland@inrae.fr
% Created: 2005-02-18
% Copyright 2005-2023 INRA - TPV URPOI - BIA IMASTE
% extract handle of axis to draw on
[hAx, varargin] = parseAxisHandle(varargin{:});
if length(varargin) == 1 && size(varargin{1}, 2) == 3
% points are given as one single array with 3 columns
px = varargin{1}(:,1);
py = varargin{1}(:,2);
pz = varargin{1}(:,3);
varargin = {};
elseif length(varargin) == 2 && size(varargin{1}, 2) == 3
% points are given as one single array with 3 columns
px = varargin{1}(:,1);
py = varargin{1}(:,2);
pz = varargin{1}(:,3);
varargin = varargin(2);
elseif length(varargin) >= 3 && size(varargin{1}, 2) == 3
% points are given as one single array with 3 columns
px = varargin{1}(:,1);
py = varargin{1}(:,2);
pz = varargin{1}(:,3);
varargin = varargin(2:end);
elseif length(varargin) == 3 && numel(varargin{1})==numel(varargin{2}) && numel(varargin{1})==numel(varargin{3})
% points are given as 3 columns with equal lengths
px = varargin{1};
py = varargin{2};
pz = varargin{3};
varargin = {};
elseif length(varargin) > 3
% points are given as 3 columns with equal lengths
px = varargin{1};
py = varargin{2};
pz = varargin{3};
varargin = varargin(4:end);
else
error('wrong number of arguments in drawPoint3d');
end
% default draw style: no line, marker is 'o'
if length(varargin) ~= 1
varargin = ['linestyle', 'none', 'marker', 'o', varargin];
end
% plot only points inside the axis.
hh = plot3(hAx, px, py, pz, varargin{:});
if nargout > 0
h = hh;
end
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