/
drawEdge3d.m
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drawEdge3d.m
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function varargout = drawEdge3d(varargin)
%DRAWEDGE3D Draw 3D edge in the current axes.
%
% drawEdge3d(EDGE) draws the edge EDGE on the current axis.
% EDGE has the form: [x1 y1 z1 x2 y2 z2]. No clipping is performed.
%
% drawEdge3d(AX,...) plots into AX instead of GCA.
%
% H = drawEdge3d(...) returns a handle H to the line object.
%
% Example
% figure; axis equal; view(3)
% p1 = [10 20 80];
% p2 = [80 10 20];
% p3 = [20 50 10];
% drawEdge3d(gca, [p1;p2],[p2;p3],'b');
% drawEdge3d([p1;p3],'k');
% pause(1)
% drawEdge3d(gca, [p1 p2; p2 p3],'g');
% drawEdge3d(p1(1), p1(2), p1(3),p3(1), p3(2), p3(3),'Color','r','Marker','x');
%
% See also
% drawLine3d, clipLine3d, drawEdge
%
% ---------
% author : David Legland
% INRA - TPV URPOI - BIA IMASTE
% created the 18/02/2005.
%
% HISTORY
% 04/01/2007 remove unused variables
% 15/12/2009 "reprecate", and add processing of input arguments
% Parse and check inputs
if isAxisHandle(varargin{1})
hAx = varargin{1};
varargin(1) = [];
else
hAx = gca;
end
% extract edges from input arguments
nCol = size(varargin{1}, 2);
if nCol == 6
% all parameters in a single array
edges = varargin{1};
varargin(1) = [];
elseif nCol == 3
if isequal(size(varargin{1}), [2 3]) && length(varargin) == 1
% parameters are two points given as 2x3
edges = [varargin{1}(1,:) varargin{1}(2,:)];
elseif isequal(size(varargin{1}), [2 3]) && ~isnumeric(varargin{2})
% parameters are two points given as 2x3
edges = [varargin{1}(1,:) varargin{1}(2,:)];
varargin(1) = [];
else
% parameters are two points, or two arrays of points, of size N*3.
edges = [varargin{1} varargin{2}];
varargin(1:2) = [];
end
elseif nargin >= 6
% parameters are 6 parameters of the edge : x1 y1 z1 x2 y2 and z2
edges = [varargin{1} varargin{2} varargin{3} varargin{4} varargin{5} varargin{6}];
varargin(1:6) = [];
end
% Parse and check inputs
isEdge3d = @(x) validateattributes(x,{'numeric'},...
{'nonempty','size',[nan,6]});
defOpts.Color = 'b';
[~, edges, varargin] = ...
parseDrawInput(edges, isEdge3d, 'line', defOpts, varargin{:});
% identify indices of valid edge (not containing any NaN's).
inds = sum(isnan(edges), 2) == 0;
% draw edges
h = line(...
[edges(inds, 1) edges(inds, 4)]', ...
[edges(inds, 2) edges(inds, 5)]', ...
[edges(inds, 3) edges(inds, 6)]', varargin{:}, ...
'Parent', hAx);
% return handle to created Edges
if nargout > 0
varargout = {h};
end