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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 [hAx, prim, varargin] = parseDrawInput(prim, valFun, type, defOpts, varargin)
%PARSEDRAWINPUT Parse input arguments for drawing functions: draw*.
%
% INPUT:
% PRIM: The primitive object: line, plane, ...
% VALFUN: An anonymous Function to validate PRIM
% TYPE: The drawing type of PRIM: 'line', 'patch', ...
% DEFOPTS: The default drawing options for PRIM as struct
%
% OUTPUT:
% HAX: The current or specified axes for drawing
% PRIM: validated PRIM
% ------
% Author: oqilipo
% E-mail: N/A
% Created: 2017-10-13, using R2017b
% Copyright 2017-2023
% Check if first input argument is an axes handle
if isAxisHandle(prim)
hAx = prim;
prim = varargin{1};
varargin(1) = [];
else
hAx = gca;
end
% Check if the primitive is valid
p=inputParser;
addRequired(p,'prim',valFun)
parse(p,prim)
% parse input arguments if there are any
if ~isempty(varargin)
if length(varargin) == 1
if isstruct(varargin{1})
% if options are specified as struct, need to convert to
% parameter name-value pairs
varargin = [fieldnames(varargin{1}) struct2cell(varargin{1})]';
varargin = varargin(:)';
else
% if option is a single argument, assume it is the color
switch type
case 'line'
varargin = {'Color', varargin{1}};
case 'patch'
varargin = {'FaceColor', varargin{1}};
end
end
end
else
% If no arguments are given, use the default options
varargin = [fieldnames(defOpts) struct2cell(defOpts)]';
varargin = varargin(:)';
end
end
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