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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 varargout = drawPlatform(varargin)
%DRAWPLATFORM Draw a rectangular platform with a given size.
%
% drawPlatform(PLANE, SIZ) draws a rectangular platform with the
% dimensions specified by SIZ. If SIZ contains only one value instead of
% two the platform will be quadratic.
%
% drawPlatform(...,'PropertyName',PropertyValue,...) sets the value of
% the specified patch property. Multiple property values can be set with
% a single statement. See function patch for details.
%
% drawPlane3d(AX,...) plots into AX instead of GCA.
%
% H = drawPlatform(...) returns a handle H to the patch object.
%
% Example
%
% p0 = [1 2 3];
% v1 = [1 0 1];
% v2 = [0 -1 1];
% plane = [p0 v1 v2];
% axis([-10 10 -10 10 -10 10]);
% drawPlatform(plane, [7,3])
% set(gcf, 'renderer', 'zbuffer');
%
% See also
% planes3d, createPlane, patch
% ------
% Author: oqilipo
% E-mail: N/A
% Created: 2018-08-09
% Copyright 2018-2023
%% Parse inputs
% extract handle of axis to draw on
[hAx, varargin] = parseAxisHandle(varargin{:});
% retrieve plane and size
plane = varargin{1};
siz = varargin{2};
varargin(1:2) = [];
% parse optional arguments
p = inputParser;
addRequired(p, 'plane', @(x) size(x,1)==1 && isPlane(x))
addRequired(p, 'siz', @(x)validateattributes(x,{'numeric'},...
{'size',[1, nan],'positive','nonnan','real','finite'}))
parse(p, plane, siz)
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 corresponds to
% plane color
varargin = {'FaceColor', varargin{1}};
end
end
else
% default face color
varargin = {'FaceColor', 'm'};
end
if numel(siz) == 1
siz(2) = siz(1);
end
%% Algorithm
% Calculate vertex points of the platform
pts(1,:) = planePoint(plane, [1,1]*0.5.*siz);
pts(2,:) = planePoint(plane, [1,-1]*0.5.*siz);
pts(3,:) = planePoint(plane, [-1,-1]*0.5.*siz);
pts(4,:) = planePoint(plane, [-1,1]*0.5.*siz);
pf.vertices = pts;
pf.faces = [1 2 3 4];
% Draw the patch
h = patch(hAx, pf, varargin{:});
%% Parse outputs
% Return handle to plane if needed
if nargout > 0
varargout{1} = h;
end
end
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