Mercurial > octave

comparison scripts/plot/__patch__.m @ 7020:e31f12bb9194

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
[project @ 2007-10-13 05:13:28 by dbateman]
author dbateman
date Sat, 13 Oct 2007 05:13:29 +0000
parents 93c65f2a5668
children db85cf23875e
comparison
equal deleted inserted replaced
7019:4270ded9ddc6 7020:e31f12bb9194
22 ## Create patch object from x and y with color c and parent p. 22 ## Create patch object from x and y with color c and parent p.
23 ## Return handle to patch object. 23 ## Return handle to patch object.
24 24
25 ## Author: Kai Habel 25 ## Author: Kai Habel
26 26
27 function h = __patch__ (p, varargin) 27 function [h, fail] = __patch__ (p, varargin)
28 28 fail = false;
29 if (nargin < 3) 29 if (nargin < 3)
30 print_usage (); 30 fail = true;
31 return;
31 endif 32 endif
32 33
33 iarg = 1; 34 iarg = 1;
34 have_x = have_z = have_c = false; 35 have_x = have_z = have_c = have_faces = false;
35 if (isnumeric (varargin{1})) 36 if (isnumeric (varargin{1}))
36 if (! isnumeric (varargin{2})) 37 if (! isnumeric (varargin{2}))
37 print_usage (); 38 fail = true;
39 return;
38 endif 40 endif
39 41
40 x = varargin{1}; 42 x = varargin{1};
41 y = varargin{2}; 43 y = varargin{2};
42 have_x = true; 44 have_x = true;
43 iarg += 2; 45 iarg += 2;
44 46
45 if (nargin > 3 && ndims (varargin{3}) == 2 && ndims (x) == 2 47 if (nargin > 3 && ndims (varargin{3}) == 2 && ndims (x) == 2
46 && size (varargin{3}) == size (x)) 48 && isequal (size (varargin{3}), size (x)))
47 z = varargin {3}; 49 z = varargin {3};
48 have_z = true; 50 have_z = true;
49 iarg++; 51 iarg++;
50 endif 52 endif
53 elseif (ischar (varargin{1}) && (strcmp (tolower (varargin{1}), "faces") ||
54 strcmp (tolower (varargin{1}), "vertices")))
55 if (! isnumeric (varargin{2}))
56 fail = true;
57 return;
58 endif
59
60 if (strcmp (tolower (varargin{1}), "faces"))
61 faces = varargin{2};
62 if (strcmp (tolower (varargin{3}), "vertices"))
63 vert = varargin{4};
64 have_faces = true;
65 endif
66 elseif (strcmp (tolower (varargin{3}), "vertices"))
67 vert = varargin{2};
68 if (strcmp (tolower (varargin{3}), "faces"))
69 faces = varargin{4};
70 have_faces = true;
71 endif
72 endif
73 if (!have_faces)
74 fail = true;
75 return;
76 else
77 iarg += 4;
78 endif
51 endif 79 endif
52 80
53 if (have_x && nargin > iarg) 81 if ((have_x || have_faces) && nargin > iarg)
54 if (isnumeric (varargin{iarg})) 82 if (isnumeric (varargin{iarg}))
55 c = varargin{iarg}; 83 c = varargin{iarg};
56 have_c = true; 84 have_c = true;
57 iarg++; 85 iarg++;
58 86
66 iarg++; 94 iarg++;
67 endif 95 endif
68 endif 96 endif
69 97
70 if (rem (nargin - iarg, 2) != 0) 98 if (rem (nargin - iarg, 2) != 0)
71 print_usage (); 99 fail = true;
100 return;
72 endif 101 endif
73 102
74 if (have_x) 103 if (have_x)
75 if (isvector (x)) 104 if (isvector (x))
76 x = x(:); 105 x = x(:);
77 y = y(:); 106 y = y(:);
78 if (have_z) 107 if (have_z)
79 z = z(:); 108 z = z(:);
80 endif 109 endif
81 endif 110 endif
82
83 [nr, nc] = size (x); 111 [nr, nc] = size (x);
84 112 if (have_z)
85 for i = 1 : nc 113 vert = [x(:), y(:), z(:)];
86 h = __go_patch__ (p); 114 else
87 ax = get (h, "parent"); 115 vert = [x(:), y(:)];
88 if (have_x) 116 endif
89 set (h, "xdata", x (:, i), "ydata", y (:, i)); 117 faces = reshape (1:numel(x), size(x,2), size(x,1));
90 if (have_z) 118 elseif (have_faces)
91 set (h, "zdata", z (:, i)); 119 nr = size (faces, 2);
92 endif 120 nc = size (faces, 1);
93 endif 121 idx = faces .';
94 122 for i = 1: nc
95 if (have_c) 123 t1 = isnan (idx (:,i));
96 if (ndims (c) == 2 && ((nr > 3 && size (c, 2) == nc) 124 if (any (t1))
97 || (size (c, 1) > 1 && size (c, 2) == nc))) 125 t2 = find (t1(1:end-1) != t1(2:end))(1);
98 c2 = c (:, i); 126 idx(t1,i) = idx(t2,i);
99 elseif (ndims (c) == 3)
100 c2 = permute (c(:,i,:), [1, 3, 2]);
101 else
102 c2 = c;
103 endif
104
105 if (ischar (c2))
106 set (h, "facecolor", c2);
107 elseif (numel (c2) == 1)
108 if (isnan (c))
109 set (h, "facecolor", [1, 1, 1]);
110 set (h, "cdata", c2);
111 elseif (isnumeric (c2))
112 ## Have color index.
113 set (h, "facecolor", "flat");
114 set (h, "cdata", c2);
115 clim = get(ax, "clim");
116 if (c2 < clim(1))
117 set (ax, "clim", [c2, clim(2)])
118 endif
119 if (c2 > clim(2))
120 set (ax, "clim", [clim(1), c2])
121 endif
122 else
123 ## Unknown color value.
124 error ("patch: color value not valid");
125 endif
126 elseif (numel (c2) == 3)
127 ## Have rgb/rgba value.
128 set (h, "facecolor", c2);
129 else
130 ## Color vector.
131 if (length (c2) != length (x) || length (c2) != length (y))
132 error ("patch: size of x, y, and c must be equal")
133 else
134 set (h, "facecolor", "interp");
135 set(h, "cdata", c2);
136 if (abs(max(c2) - min(c2)) < eps)
137 set (ax, "clim", [c2(1)-1, c2(1)+1])
138 else
139 set (ax, "clim", [min(c2), max(c2)]);
140 endif
141 endif
142 endif
143 else
144 set (h, "facecolor", [0, 1, 0]);
145 endif
146
147 if (nargin > iarg + 1)
148 set (h, varargin{iarg:end});
149 endif 127 endif
150 endfor 128 endfor
129 x = vert(:,1)(idx);
130 y = vert(:,2)(idx);
131 if (size(vert,2) > 2)
132 have_z = true;
133 z = vert(:,3)(idx);
134 endif
151 else 135 else
152 error ("patch: not supported"); 136 error ("patch: not supported");
153 endif 137 endif
154 138
139 h = __go_patch__ (p);
140 ax = get (h, "parent");
141
142 cargs = {};
143 if (have_c)
144 if (ischar (c))
145 cargs{1} = "facecolor";
146 cargs{2} = c;
147 elseif (isvector(c) && numel(c) == nc)
148 if (isnan (c))
149 cargs{1} = "facecolor";
150 cargs{2} = [1, 1, 1];
151 cargs{3} = "cdata";
152 cargs{4} = c;
153 elseif (isnumeric (c))
154 cargs{1} = "facecolor";
155 cargs{2} = "flat";
156 cargs{3} = "cdata";
157 cargs{4} = c;
158 clim = get(ax, "clim");
159 if (c(1) < clim(1))
160 set (ax, "clim", [c(1), clim(2)])
161 endif
162 if (c(1) > clim(2))
163 set (ax, "clim", [clim(1), c(1)])
164 endif
165 else
166 error ("patch: color value not valid");
167 endif
168 elseif (size(c, ndims(c)) == 3)
169 cargs{1} = "facecolor";
170 cargs{2} = "flat";
171 cargs{3} = "cdata";
172 cargs{4} = c;
173 else
174 ## Color Vectors
175
176 if (rows (c2) != rows (x) || rows (c2) != length (y))
177 error ("patch: size of x, y, and c must be equal")
178 else
179 cargs{1} = "facecolor";
180 cargs{2} = "interp";
181 if (abs(max(c2(:)) - min(c2(:))) < eps)
182 set (ax, "clim", [c2(1)-1, c2(1)+1])
183 else
184 set (ax, "clim", [min(c2(:)), max(c2(:))]);
185 endif
186 endif
187 endif
188 else
189 cargs{1} = "facecolor";
190 cargs{2} = [0, 1, 0];
191 endif
192
193 set (h, "xdata", x, "ydata", y, "faces", faces, "vertices", vert, ...
194 cargs{:}, varargin{iarg:end});
195 if (have_z)
196 set (h, "zdata", z);
197 endif
198
155 endfunction 199 endfunction