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1 | %!PS-Adobe-2.0 EPSF-2.0 | |
2 | %%Title: alignt.eps | |
3 | %%Creator: XV Version 2.20 Rev: 4/24/92 - by John Bradley | |
4 | %%BoundingBox: 254 389 270 404 | |
5 | %%Pages: 1 | |
6 | %%DocumentFonts: | |
7 | %%EndComments | |
8 | %%EndProlog | |
9 | ||
10 | %%Page: 1 1 | |
11 | ||
12 | % remember original state | |
13 | /origstate save def | |
14 | ||
15 | % build a temporary dictionary | |
16 | 20 dict begin | |
17 | ||
18 | % lower left corner | |
19 | 254 389 translate | |
20 | ||
21 | % size of image (on paper, in 1/72inch coords) | |
22 | 16 15 scale | |
23 | ||
24 | % define 'colorimage' if it isn't defined | |
25 | % ('colortogray' and 'mergeprocs' come from xwd2ps | |
26 | % via xgrab) | |
27 | /colorimage where % do we know about 'colorimage'? | |
28 | { pop } % yes: pop off the 'dict' returned | |
29 | { % no: define one | |
30 | /colortogray { % define an RGB->I function | |
31 | /rgbdata exch store % call input 'rgbdata' | |
32 | rgbdata length 3 idiv | |
33 | /npixls exch store | |
34 | /rgbindx 0 store | |
35 | /grays npixls string store % str to hold the result | |
36 | 0 1 npixls 1 sub { | |
37 | grays exch | |
38 | rgbdata rgbindx get 20 mul % Red | |
39 | rgbdata rgbindx 1 add get 32 mul % Green | |
40 | rgbdata rgbindx 2 add get 12 mul % Blue | |
41 | add add 64 idiv % I = .5G + .31R + .18B | |
42 | put | |
43 | /rgbindx rgbindx 3 add store | |
44 | } for | |
45 | grays | |
46 | } bind def | |
47 | ||
48 | % Utility procedure for colorimage operator. | |
49 | % This procedure takes two procedures off the | |
50 | % stack and merges them into a single procedure. | |
51 | ||
52 | /mergeprocs { % def | |
53 | dup length | |
54 | 3 -1 roll | |
55 | dup | |
56 | length | |
57 | dup | |
58 | 5 1 roll | |
59 | 3 -1 roll | |
60 | add | |
61 | array cvx | |
62 | dup | |
63 | 3 -1 roll | |
64 | 0 exch | |
65 | putinterval | |
66 | dup | |
67 | 4 2 roll | |
68 | putinterval | |
69 | } bind def | |
70 | ||
71 | /colorimage { % def | |
72 | pop pop % remove 'false 3' operands | |
73 | {colortogray} mergeprocs | |
74 | image | |
75 | } bind def | |
76 | } ifelse % end of 'false' case | |
77 | ||
78 | ||
79 | ||
80 | % define the colormap | |
81 | /cmap 9 string def | |
82 | ||
83 | ||
84 | % load up the colormap | |
85 | currentfile cmap readhexstring | |
86 | 000000 c0c0c0 ffff00 | |
87 | pop pop % lose return values from readhexstring | |
88 | ||
89 | ||
90 | % rlecmapimage expects to have 'w h bits matrix' on stack | |
91 | /rlecmapimage { | |
92 | /buffer 1 string def | |
93 | /rgbval 3 string def | |
94 | /block 384 string def | |
95 | ||
96 | % proc to read a block from file, and return RGB data | |
97 | { currentfile buffer readhexstring pop | |
98 | /bcount exch 0 get store | |
99 | bcount 128 ge | |
100 | { % it's a non-run block | |
101 | 0 1 bcount 128 sub | |
102 | { currentfile buffer readhexstring pop pop | |
103 | ||
104 | % look up value in color map | |
105 | /rgbval cmap buffer 0 get 3 mul 3 getinterval store | |
106 | ||
107 | % and put it in position i*3 in block | |
108 | block exch 3 mul rgbval putinterval | |
109 | } for | |
110 | block 0 bcount 127 sub 3 mul getinterval | |
111 | } | |
112 | ||
113 | { % else it's a run block | |
114 | currentfile buffer readhexstring pop pop | |
115 | ||
116 | % look up value in colormap | |
117 | /rgbval cmap buffer 0 get 3 mul 3 getinterval store | |
118 | ||
119 | 0 1 bcount { block exch 3 mul rgbval putinterval } for | |
120 | ||
121 | block 0 bcount 1 add 3 mul getinterval | |
122 | } ifelse | |
123 | } % end of proc | |
124 | false 3 colorimage | |
125 | } bind def | |
126 | ||
127 | ||
128 | 16 15 8 % dimensions of data | |
129 | [16 0 0 -15 0 15] % mapping matrix | |
130 | rlecmapimage | |
131 | ||
132 | 0f01 | |
133 | 810100030001010700 | |
134 | 8201000201028100018201000204020000 | |
135 | 8201000201028100018201000204020000 | |
136 | 8201000201028100018201000204020000 | |
137 | 8201000201028100018201000204020000 | |
138 | 8101000300010181000204020000 | |
139 | 070181000204020000 | |
140 | 070181000204020000 | |
141 | 070181000204020000 | |
142 | 070181000204020000 | |
143 | 070181000204020000 | |
144 | 07010700 | |
145 | 0f01 | |
146 | 0f01 | |
147 | ||
148 | % | |
149 | % Compression made this file 20.28% of the uncompressed size. | |
150 | % | |
151 | ||
152 | ||
153 | showpage | |
154 | ||
155 | % stop using temporary dictionary | |
156 | end | |
157 | ||
158 | % restore original state | |
159 | origstate restore | |
160 | ||
161 | %%Trailer |