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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 = drawPlane3d(plane, varargin)
%DRAWPLANE3D Draw a plane clipped by the current axes.
%
% drawPlane3d(PLANE) draws a plane of the format:
% [x0 y0 z0 dx1 dy1 dz1 dx2 dy2 dz2]
%
% drawPlane3d(..., 'PropertyName', PropertyValue,...)
% Sets the value of the specified patch property. Multiple property
% values can be set with a single statement. See the function "patch" for
% details.
%
% drawPlane3d(AX,...)
% plots into AX instead of GCA.
%
% H = drawPlane3d(...)
% returns a handle H to the patch object.
%
% Example
% % Draw a plane, its main axes, and its normal vector
% p0 = [1 2 3];
% v1 = [1 0 1];
% v2 = [0 -1 1];
% plane = [p0 v1 v2];
% figure; axis([-10 10 -10 10 -10 10]); hold on; view(3);
% drawPlane3d(plane);
% drawLine3d([p0 v1]);
% drawLine3d([p0 v2]);
% set(gcf, 'renderer', 'zbuffer');
% vn = crossProduct3d(v1, v2);
% drawVector3d(p0, vn);
%
% See also
% planes3d, createPlane, clipPlane, patch
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2005-02-17
% Copyright 2005-2023 INRA - TPV URPOI - BIA IMASTE
% add support for drawing multiple planes at once
if size(plane, 1) > 1
nPlanes = size(plane, 1);
hp = zeros(nPlanes, 1);
for iPlane = 1:nPlanes
hp(iPlane) = drawPlane3d(plane(iPlane, :), varargin{:});
end
if nargout > 0
h = hp;
end
return;
end
% Parse and check inputs
valFun = @(x) size(x,1)==1 && isPlane(x);
defOpts.FaceColor = 'm';
[hAx, plane, varargin] = ...
parseDrawInput(plane, valFun, 'patch', defOpts, varargin{:});
% extract axis bounds to crop plane
lim = get(hAx, 'xlim');
xmin = lim(1);
xmax = lim(2);
lim = get(hAx, 'ylim');
ymin = lim(1);
ymax = lim(2);
lim = get(hAx, 'zlim');
zmin = lim(1);
zmax = lim(2);
% allocate array of handles
nPlanes = size(plane, 1);
hp = gobjects(1, nPlanes);
% save hold state
holdState = ishold(hAx);
hold(hAx, 'on');
% iterate over planes
for iPlane = 1:nPlanes
% clip plane with current axis bounds
poly = clipPlane(plane(iPlane,:), [xmin xmax ymin ymax zmin zmax]);
% draw only non-empty intersections
if ~isempty(poly)
hp(iPlane) = patch( ...
'XData', poly(:, 1), ...
'YData', poly(:, 2), ...
'ZData', poly(:, 3), ...
'Parent', hAx, varargin{:});
end
end
% restore hold state
if ~holdState
hold(hAx, 'off');
end
% Do not return axis if not requested
% avoids output when called without semicolon
if nargout > 0
h = hp;
end
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