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annotate scripts/plot/private/__interp_cube__.m @ 12812:4c93cc41da15 stable

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codesprint: add demo for surf.m and surfc.m
author Kai Habel <kai.habel@gmx.de>
date Sat, 16 Jul 2011 20:56:20 +0200
parents fd0a3ac60b0e
children 72c96de7a403
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1 ## Copyright (C) 2009-2011 Martin Helm
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18 ##
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19 ## Author: Martin Helm <martin@mhelm.de>
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20
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21 ## -*- texinfo -*-
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22 ## @deftypefn {Function File} {[@var{vxyz}, @var{idx}, @var{frac}] =} __interp_cube__ (@var{x}, @var{y}, @var{z}, @var{val}, @var{v})
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23 ## Undocumented internal function.
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24 ## @end deftypefn
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25
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26 function [Vxyz, idx, frac] = __interp_cube__(x, y, z, val, v, req = "values" )
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27 if (ismatrix (x) && ndims (x) == 3 && ismatrix (y) && ndims (y) == 3 ...
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28 && ismatrix (z) && ndims (z) == 3 && size_equal (x, y, z, val))
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29 x = squeeze (x(1,:,1))(:);
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30 y = squeeze (y(:,1,1))(:);
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31 z = squeeze (z(1,1,:))(:);
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32 elseif (isvector (x) && isvector (y) && isvector (z) )
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33 x = x(:);
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34 y = y(:);
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35 z = z(:);
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36 else
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37 error("__interp_cube__: X, Y, Z have wrong dimensions");
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38 endif
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39 if (size (val) != [length(x), length(y), length(z)])
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40 error ("__interp_cube__: VAL has wrong dimensions");
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41 endif
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42 if (size (v, 2) != 3)
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43 error ( "v has to be N*3 matrix");
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44 endif
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45 if (!ischar (req))
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46 error ("__interp_cube__: Invalid request parameter use 'values', 'normals' or 'normals8'");
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47 endif
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48 if (isempty (v))
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49 Vxyz = idx = frac = [];
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50 return
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51 endif
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52
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53 switch (req)
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54 case "values"
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55 [Vxyz, idx, frac] = interp_cube_trilin (x, y, z, val, v);
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56 case "normals"
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57 [idx, frac] = cube_idx (x, y, z, v);
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58
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59 dx = x(2:end) - x(1:end-1);
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60 dy = y(2:end) - y(1:end-1);
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61 dz = z(2:end) - z(1:end-1);
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62 dx = 0.5 .* [dx;dx(end)](idx(:,2));
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63 dy = 0.5 .* [dy;dy(end)](idx(:,1));
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64 dz = 0.5 .* [dz;dz(end)](idx(:,3));
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65
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66 p000 = [v(:, 1) - dx, v(:, 2) - dy, v(:, 3) - dz];
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67 p100 = [v(:, 1) + dx, v(:, 2) - dy, v(:, 3) - dz];
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68 p010 = [v(:, 1) - dx, v(:, 2) + dy, v(:, 3) - dz];
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69 p001 = [v(:, 1) - dx, v(:, 2) - dy, v(:, 3) + dz];
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70 p011 = [v(:, 1) - dx, v(:, 2) + dy, v(:, 3) + dz];
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71 p101 = [v(:, 1) + dx, v(:, 2) - dy, v(:, 3) + dz];
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72 p110 = [v(:, 1) + dx, v(:, 2) + dy, v(:, 3) - dz];
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73 p111 = [v(:, 1) + dx, v(:, 2) + dy, v(:, 3) + dz];
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74
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75 v000 = interp_cube_trilin (x, y, z, val, p000);
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76 v100 = interp_cube_trilin (x, y, z, val, p100);
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77 v010 = interp_cube_trilin (x, y, z, val, p010);
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78 v001 = interp_cube_trilin (x, y, z, val, p001);
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79 v011 = interp_cube_trilin (x, y, z, val, p011);
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80 v101 = interp_cube_trilin (x, y, z, val, p101);
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81 v110 = interp_cube_trilin (x, y, z, val, p110);
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82 v111 = interp_cube_trilin (x, y, z, val, p111);
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83
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84 Dx = -v000 .+ v100 .- v010 .- v001 .- v011 .+ v101 .+ v110 .+ v111;
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85 Dy = -v000 .- v100 .+ v010 .- v001 .+ v011 .- v101 .+ v110 .+ v111;
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86 Dz = -v000 .- v100 .- v010 .+ v001 .+ v011 .+ v101 .- v110 .+ v111;
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87 Vxyz = 0.5 .* [Dx./dx, Dy./dy, Dz./dz];
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88 case "normals8"
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89 [idx, frac] = cube_idx (x, y, z, v);
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90
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91 dx = x(2:end) - x(1:end-1);
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92 dy = y(2:end) - y(1:end-1);
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93 dz = z(2:end) - z(1:end-1);
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94 dx = [dx;dx(end)](idx(:,2));
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95 dy = [dy;dy(end)](idx(:,1));
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96 dz = [dz;dz(end)](idx(:,3));
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97 [Dx, Dy, Dz, idx, frac] = interp_cube_trilin_grad (x, y, z, val, v);
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98 Vxyz = [Dx./dx, Dy./dy, Dz./dz];
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99 otherwise
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parents: 9896
diff changeset
100 error ("__interp_cube__: Invalid request type '%s', use 'values', 'normals' or 'normals8'", req);
9110
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
101 endswitch
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
102 endfunction
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
103
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
104 function [Vxyz, idx, frac] = interp_cube_trilin(x, y, z, val, v)
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
105 [idx, frac] = cube_idx (x(:), y(:), z(:), v);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
106 sval = size (val);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
107 i000 = sub2ind (sval, idx(:, 1), idx(:, 2), idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
108 i100 = sub2ind (sval, idx(:, 1)+1, idx(:, 2), idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
109 i010 = sub2ind (sval, idx(:, 1), idx(:, 2)+1, idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
110 i001 = sub2ind (sval, idx(:, 1), idx(:, 2), idx(:, 3)+1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
111 i101 = sub2ind (sval, idx(:, 1)+1, idx(:, 2), idx(:, 3)+1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
112 i011 = sub2ind (sval, idx(:, 1), idx(:, 2)+1, idx(:, 3)+1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
113 i110 = sub2ind (sval, idx(:, 1)+1, idx(:, 2)+1, idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
114 i111 = sub2ind (sval, idx(:, 1)+1, idx(:, 2)+1, idx(:, 3)+1 );
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
115 Bx = frac(:, 1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
116 By = frac(:, 2);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
117 Bz = frac(:, 3);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
118 Vxyz = ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
119 val( i000 ) .* (1 .- Bx) .* (1 .- By) .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
120 val( i100 ) .* Bx .* (1 .- By) .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
121 val( i010 ) .* (1 .- Bx) .* By .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
122 val( i001 ) .* (1 .- Bx) .* (1 .- By) .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
123 val( i011 ) .* (1 .- Bx) .* By .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
124 val( i101 ) .* Bx .* (1 .- By) .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
125 val( i110 ) .* Bx .* By .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
126 val( i111 ) .* Bx .* By .* Bz;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
127 endfunction
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
128
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
129 function [Dx, Dy, Dz, idx, frac] = interp_cube_trilin_grad(x, y, z, val, v)
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
130 [idx, frac] = cube_idx (x(:), y(:), z(:), v);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
131 sval = size (val);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
132 i000 = sub2ind (sval, idx(:, 1), idx(:, 2), idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
133 i100 = sub2ind (sval, idx(:, 1)+1, idx(:, 2), idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
134 i010 = sub2ind (sval, idx(:, 1), idx(:, 2)+1, idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
135 i001 = sub2ind (sval, idx(:, 1), idx(:, 2), idx(:, 3)+1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
136 i101 = sub2ind (sval, idx(:, 1)+1, idx(:, 2), idx(:, 3)+1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
137 i011 = sub2ind (sval, idx(:, 1), idx(:, 2)+1, idx(:, 3)+1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
138 i110 = sub2ind (sval, idx(:, 1)+1, idx(:, 2)+1, idx(:, 3));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
139 i111 = sub2ind (sval, idx(:, 1)+1, idx(:, 2)+1, idx(:, 3)+1 );
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
140 Bx = frac(:, 1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
141 By = frac(:, 2);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
142 Bz = frac(:, 3);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
143 Dx = ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
144 val( i000 ) .* -1 .* (1 .- By) .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
145 val( i100 ) .* (1 .- By) .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
146 val( i010 ) .* -1 .* By .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
147 val( i001 ) .* -1 .* (1 .- By) .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
148 val( i011 ) .* -1 .* By .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
149 val( i101 ) .* (1 .- By) .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
150 val( i110 ) .* By .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
151 val( i111 ) .* By .* Bz;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
152 Dy = ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
153 val( i000 ) .* (1 .- Bx) .* -1 .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
154 val( i100 ) .* Bx .* -1 .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
155 val( i010 ) .* (1 .- Bx) .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
156 val( i001 ) .* (1 .- Bx) .* -1 .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
157 val( i011 ) .* (1 .- Bx) .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
158 val( i101 ) .* Bx .* -1 .* Bz .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
159 val( i110 ) .* Bx .* (1 .- Bz) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
160 val( i111 ) .* Bx .* Bz;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
161 Dz = ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
162 val( i000 ) .* (1 .- Bx) .* (1 .- By) .* -1 .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
163 val( i100 ) .* Bx .* (1 .- By) .* -1 .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
164 val( i010 ) .* (1 .- Bx) .* By .* -1 .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
165 val( i001 ) .* (1 .- Bx) .* (1 .- By) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
166 val( i011 ) .* (1 .- Bx) .* By + ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
167 val( i101 ) .* Bx .* (1 .- By) .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
168 val( i110 ) .* Bx .* By .* -1 .+ ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
169 val( i111 ) .* Bx .* By;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
170 endfunction
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
171
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
172 function [idx, frac] = cube_idx(x, y, z, v)
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
173 idx = zeros (size (v));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
174 frac = zeros (size (v));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
175 idx(:, 2) = lookup (x(2:end-1), v(:, 1)) + 1;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
176 frac(:, 2) = (v(:, 1) - x(idx(:, 2)) )...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
177 ./ (x(idx(:, 2)+1) - x(idx(:, 2)));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
178 idx(:, 1) = lookup (y(2:end-1), v(:, 2)) + 1;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
179 frac(:, 1) = (v(:, 2) - y(idx(:, 1))) ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
180 ./ (y(idx(:, 1)+1) - y(idx(:, 1)));
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
181 idx(:, 3) = lookup (z(2:end-1), v(:, 3)) + 1;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
182 frac(:, 3) = (v(:, 3) - z(idx(:, 3))) ...
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
183 ./ (z(idx(:, 3)+1) - z(idx(:, 3)));
10635
d1978e7364ad Print name of function in error() string messages.
Rik <octave@nomad.inbox5.com>
parents: 9896
diff changeset
184 endfunction