/usr/share/octave/packages/geometry-1.7.0/geom3d/drawCube.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 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 | ## 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} =} drawCube (@var{cube})
## @deftypefnx {Function File} {[@var{x},@var{y},@var{z}] =} drawCube (@var{cube})
## Draw a 3D centered cube, eventually rotated
##
## drawCube(CUBE)
## Displays a 3D cube on current axis. CUBE is given by:
## [XC YC ZC SIDE THETA PHI PSI]
## where (XC, YC, ZC) is the CUBE center, SIDE is the length of the cube
## main sides, and THETA PHI PSI are angles representing the cube
## orientation, in degrees. THETA is the colatitude of the cube, between 0
## and 90 degrees, PHI is the longitude, and PSI is the rotation angle
## around the axis of the normal.
##
## CUBE can be axis aligned, in this case it should only contain center
## and side information:
## CUBE = [XC YC ZC SIDE]
##
## The function drawCuboid is closely related, but uses a different angle
## convention, and allows for different sizes along directions.
##
## Example
## @example
## # Draw a cube with small rotations
## figure; hold on;
## drawCube([10 20 30 50 10 20 30], 'FaceColor', 'g');
## axis equal;
## view(3);
## @end example
##
## WARNING: This function doesn't work in gnuplot (as of version 4.2).
##
## @seealso{meshes3d, polyhedra, createCube, drawCuboid}
## @end deftypefn
function varargout = drawCube(cube, varargin)
# default values
theta = 0;
phi = 0;
psi = 0;
## Parses the input
if nargin == 0
# no input: assumes cube with default shape
xc = 0; yc = 0; zc = 0;
a = 1;
else
# one argument: parses elements
xc = cube(:,1);
yc = cube(:,2);
zc = cube(:,3);
a = cube(:,4);
# parses orientation if present
k = pi / 180;
if size(cube, 2) >= 6
theta = cube(:,5) * k;
phi = cube(:,6) * k;
end
if size(cube, 2) >= 7
psi = cube(:,7) * k;
end
end
## Compute cube coordinates
# create unit centered cube
[v f] = createCube;
v = bsxfun(@minus, v, mean(v, 1));
# convert unit basis to cube basis
sca = createScaling3d (a);
rot1 = createRotationOz (psi);
rot2 = createRotationOy (theta);
rot3 = createRotationOz (phi);
tra = createTranslation3d ([xc yc zc]);
# concatenate transforms
trans = tra * rot3 * rot2 * rot1 * sca;
# transform mesh vertices
[x y z] = transformPoint3d (v, trans);
## Process output
if nargout == 0
# no output: draw the cube
drawMesh ([x y z], f, varargin{:});
elseif nargout == 1
# one output: draw the cube and return handle
varargout{1} = drawMesh ([x y z], f, varargin{:});
elseif nargout == 3
# 3 outputs: return computed coordinates
varargout{1} = x;
varargout{2} = y;
varargout{3} = z;
end
endfunction
%!demo
%! # Draw a cube with small rotations
%! close all
%! graphics_toolkit fltk;
%! figure; hold on;
%! drawCube([10 20 30 50 10 20 30], 'FaceColor', 'g');
%! axis equal;
%! view(3);
|