/usr/share/octave/packages/geometry-1.7.0/meshes3d/drawMesh.m is in octave-geometry 1.7.0-1build1.
This file is owned by root:root, with mode 0o644.
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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 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 | ## 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} =} drawMesh (@var{vertices}, @var{faces})
## @deftypefnx {Function File} {@var{h} =} drawMesh (@var{mesh})
## @deftypefnx {Function File} {@var{h} =} drawMesh (@dots{}, @var{color})
## @deftypefnx {Function File} {@var{h} =} drawMesh (@dots{}, @var{name},@var{value})
## Draw a 3D mesh defined by vertices and faces
##
## drawMesh(VERTICES, FACES)
## Draws the 3D mesh defined by vertices VERTICES and the faces FACES.
## vertices is a [NVx3] array containing coordinates of vertices, and FACES
## is either a [NFx3] or [NFx4] array containing indices of vertices of
## the triangular or rectangular faces.
## FACES can also be a cell array, in the content of each cell is an array
## of indices to the vertices of the current face. Faces can have different
## number of vertices.
##
## drawMesh(MESH)
## Where mesh is a structure with fields 'vertices' and 'faces', draws the
## given mesh.
##
## drawMesh(..., COLOR)
## Use the specified color to render the mesh faces.
##
## drawMesh(..., NAME, VALUE)
## Use one or several pairs of parameter name/value to specify drawing
## options. Options are the same as the 'patch' function.
##
##
## H = drawMesh(...);
## Also returns a handle to the created patch.
##
## WARNING: This function doesn't work with gnuplot (as of version 4.1)
##
## Example:
## @example
## [v f] = createSoccerBall;
## drawMesh(v, f);
## @end example
##
## @seealso{polyhedra, meshes3d, patch}
## @end deftypefn
function varargout = drawMesh(vertices, faces, varargin)
if strcmpi (graphics_toolkit(),"gnuplot")
error ("geometry:Incompatibility", ...
["This function doesn't work with gnuplot (as of version 4.1)." ...
"Use graphics_toolkit('fltk').\n"]);
end
## Initialisations
# Check if the input is a mesh structure
if isstruct(vertices)
# refresh options
if nargin > 1
varargin = [{faces} varargin];
end
# extract data to display
faces = vertices.faces;
vertices = vertices.vertices;
end
# process input arguments
switch length(varargin)
case 0
# default color is red
varargin = {'facecolor', [1 0 0]};
case 1
# use argument as color for faces
varargin = {'facecolor', varargin{1}};
otherwise
# otherwise keep varargin unchanged
end
# overwrites on current figure
hold on;
# if vertices are 2D points, add a z=0 coordinate
if size(vertices, 2)==2
vertices(1,3)=0;
end
## Use different processing depending on the type of faces
if isnumeric(faces)
# array FACES is a NC*NV indices array, with NV : number of vertices of
# each face, and NC number of faces
h = patch('vertices', vertices, 'faces', faces, varargin{:});
elseif iscell(faces)
# array FACES is a cell array
h = zeros(length(faces(:)), 1);
for f=1:length(faces(:))
# get vertices of the cell
face = faces{f};
# Special processing in case of multiple polygonal face:
# each polygonal loop is separated by a NaN.
if sum(isnan(face))~=0
# find indices of loops breaks
inds = find(isnan(face));
# replace NaNs by index of first vertex of each polygon
face(inds(2:end)) = face(inds(1:end-1)+1);
face(inds(1)) = face(1);
face(length(face)+1)= face(inds(end)+1);
end
# draw current face
cnodes = vertices(face, :);
h(f) = patch(cnodes(:, 1), cnodes(:, 2), cnodes(:, 3), [1 0 0]);
end
# set up drawing options
set(h, varargin{:});
else
error('second argument must be a face array');
end
## Process output arguments
# format output parameters
if nargout>0
varargout{1}=h;
end
endfunction
%!demo
%! close all
%! graphics_toolkit ("fltk");
%! [v f] = createCubeOctahedron;
%! drawMesh(v, f);
%! view (3)
%!demo
%! close all
%! graphics_toolkit ("gnuplot");
|