/usr/share/octave/packages/geometry-1.7.0/geom3d/drawSphericalTriangle.m is in octave-geometry 1.7.0-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | ## Copyright (C) 2004-2011 David Legland <david.legland@grignon.inra.fr>
## Copyright (C) 2004-2011 INRA - CEPIA Nantes - MIAJ (Jouy-en-Josas)
## Copyright (C) 2012 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
## 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.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{h} =} function_name (@var{sphere}, @var{p1},@var{p2},@var{p3})
## Draw a triangle on a sphere
## @seealso{drawSphere, fillSphericalTriangle, drawSphericalPolygon}
## @end deftypefn
function varargout = drawSphericalTriangle(sphere, p1, p2, p3, varargin)
# extract data of the sphere
ori = sphere(:, 1:3);
# extract direction vectors for each point
v1 = normalizeVector (p1 - ori);
v2 = normalizeVector (p2 - ori);
v3 = normalizeVector (p3 - ori);
hold on
h1 = drawSphericalEdge (sphere, [v1 v2], varargin{:});
h2 = drawSphericalEdge (sphere, [v2 v3], varargin{:});
h3 = drawSphericalEdge (sphere, [v3 v1], varargin{:});
hold off
if nargout > 0
varargout = {h1, h2, h3};
end
endfunction
%!demo
%! p = full(eye(3));
%! s = [0 0 0 2];
%! drawSphericalTriangle (s,p(1,:),p(2,:),p(3,:),"r");
%! view(40,35)
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