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+--------+-------------------------+-------------------------+--------+--------+
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|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000080| 2f 2a 0d 4d 65 61 73 75 | 72 65 4d 54 46 2e 63 0d |/*.Measu|reMTF.c.|
|00000090| 43 6f 70 79 72 69 67 68 | 74 20 a9 20 31 39 39 30 |Copyrigh|t . 1990|
|000000a0| 2d 31 39 39 33 20 44 65 | 6e 69 73 20 47 2e 20 50 |-1993 De|nis G. P|
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|00000350| 69 64 65 6f 54 6f 6f 6c | 62 6f 78 2e 68 22 0d 23 |ideoTool|box.h".#|
|00000360| 69 6e 63 6c 75 64 65 20 | 22 4c 75 6d 69 6e 61 6e |include |"Luminan|
|00000370| 63 65 2e 68 22 0d 2f 2f | 23 69 6e 63 6c 75 64 65 |ce.h".//|#include|
|00000380| 20 3c 50 61 63 6b 61 67 | 65 73 2e 68 3e 0d 23 69 | <Packag|es.h>.#i|
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|000003a0| 49 4e 4b 5f 43 50 4c 55 | 53 20 7c 7c 20 53 59 4d |INK_CPLU|S || SYM|
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|000003c0| 64 65 20 3c 70 72 6f 66 | 69 6c 65 2e 68 3e 09 2f |de <prof|ile.h>./|
|000003d0| 2a 20 66 6f 72 20 74 69 | 6d 69 6e 67 20 2a 2f 0d |* for ti|ming */.|
|000003e0| 09 23 64 65 66 69 6e 65 | 20 53 59 4d 41 4e 54 45 |.#define| SYMANTE|
|000003f0| 43 5f 43 5f 50 52 4f 46 | 49 4c 45 20 31 0d 23 65 |C_C_PROF|ILE 1.#e|
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|00000410| 5f 50 49 20 28 32 2e 30 | 2a 50 49 29 0d 23 64 65 |_PI (2.0|*PI).#de|
|00000420| 66 69 6e 65 20 4d 41 58 | 28 61 2c 62 29 20 28 28 |fine MAX|(a,b) ((|
|00000430| 61 29 3e 28 62 29 3f 28 | 61 29 3a 28 62 29 29 0d |a)>(b)?(|a):(b)).|
|00000440| 23 64 65 66 69 6e 65 20 | 4d 49 4e 28 61 2c 62 29 |#define |MIN(a,b)|
|00000450| 20 28 28 61 29 3c 28 62 | 29 3f 28 61 29 3a 28 62 | ((a)<(b|)?(a):(b|
|00000460| 29 29 0d 0d 76 6f 69 64 | 20 4d 65 61 73 75 72 65 |))..void| Measure|
|00000470| 4d 54 46 28 76 6f 69 64 | 29 3b 0d 64 6f 75 62 6c |MTF(void|);.doubl|
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|000004b0| 64 20 2a 4c 50 2c 69 6e | 74 20 74 50 65 72 69 6f |d *LP,in|t tPerio|
|000004c0| 64 2c 64 6f 75 62 6c 65 | 20 63 5b 31 30 5d 2c 57 |d,double| c[10],W|
|000004d0| 69 6e 64 6f 77 50 74 72 | 20 70 6c 6f 74 57 69 6e |indowPtr| plotWin|
|000004e0| 64 6f 77 29 3b 0d 64 6f | 75 62 6c 65 20 73 61 77 |dow);.do|uble saw|
|000004f0| 28 64 6f 75 62 6c 65 20 | 78 29 3b 0d 0d 76 6f 69 |(double |x);..voi|
|00000500| 64 20 6d 61 69 6e 28 76 | 6f 69 64 29 0d 7b 0d 09 |d main(v|oid).{..|
|00000510| 61 73 73 65 72 74 28 53 | 74 61 63 6b 53 70 61 63 |assert(S|tackSpac|
|00000520| 65 28 29 3e 31 30 30 30 | 29 3b 0d 09 53 74 61 63 |e()>1000|);..Stac|
|00000530| 6b 47 72 6f 77 28 33 30 | 30 30 30 29 3b 0d 09 52 |kGrow(30|000);..R|
|00000540| 65 71 75 69 72 65 28 67 | 65 73 74 61 6c 74 38 42 |equire(g|estalt8B|
|00000550| 69 74 51 44 29 3b 0d 09 | 4d 65 61 73 75 72 65 4d |itQD);..|MeasureM|
|00000560| 54 46 28 29 3b 0d 7d 0d | 0d 76 6f 69 64 20 4d 65 |TF();.}.|.void Me|
|00000570| 61 73 75 72 65 4d 54 46 | 28 76 6f 69 64 29 0d 7b |asureMTF|(void).{|
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|00000590| 65 2c 6f 6c 64 47 44 48 | 61 6e 64 6c 65 3b 0d 09 |e,oldGDH|andle;..|
|000005a0| 43 57 69 6e 64 6f 77 50 | 74 72 20 77 69 6e 64 6f |CWindowP|tr windo|
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|000005c0| 6f 74 57 69 6e 64 6f 77 | 2c 6d 74 66 57 69 6e 64 |otWindow|,mtfWind|
|000005d0| 6f 77 3b 0d 09 4c 75 6d | 69 6e 61 6e 63 65 52 65 |ow;..Lum|inanceRe|
|000005e0| 63 6f 72 64 20 4c 52 3b | 0d 09 63 68 61 72 20 73 |cord LR;|..char s|
|000005f0| 74 72 69 6e 67 5b 31 30 | 30 5d 2c 73 74 72 69 6e |tring[10|0],strin|
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|00000620| 6c 6f 6e 67 20 73 65 63 | 6f 6e 64 73 3b 0d 09 46 |long sec|onds;..F|
|00000630| 49 4c 45 20 2a 6f 75 74 | 66 69 6c 65 5b 32 5d 3b |ILE *out|file[2];|
|00000640| 0d 09 69 6e 74 20 69 2c | 74 50 65 72 69 6f 64 2c |..int i,|tPeriod,|
|00000650| 77 69 64 74 68 3b 0d 09 | 52 65 63 74 20 72 2c 73 |width;..|Rect r,s|
|00000660| 72 63 52 65 63 74 2c 64 | 73 74 52 65 63 74 3b 0d |rcRect,d|stRect;.|
|00000670| 09 64 6f 75 62 6c 65 20 | 61 2c 62 2c 66 2c 66 4e |.double |a,b,f,fN|
|00000680| 6f 6d 69 6e 61 6c 2c 63 | 2c 4c 2c 63 4f 75 74 2c |ominal,c|,L,cOut,|
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|000006c0| 65 64 20 6c 6f 6e 67 20 | 72 6f 77 5b 31 30 34 38 |ed long |row[1048|
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|00000770| 45 43 5f 43 29 0d 09 09 | 63 6f 6e 73 6f 6c 65 5f |EC_C)...|console_|
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|000007b0| 74 69 61 6c 69 7a 65 20 | 51 75 69 63 6b 44 72 61 |tialize |QuickDra|
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|00000880| 09 23 65 6e 64 69 66 0d | 09 70 72 69 6e 74 66 28 |.#endif.|.printf(|
|00000890| 22 57 65 6c 63 6f 6d 65 | 20 74 6f 20 4d 65 61 73 |"Welcome| to Meas|
|000008a0| 75 72 65 4d 54 46 2e 5c | 6e 22 29 3b 0d 09 23 69 |ureMTF.\|n");..#i|
|000008b0| 6e 63 6c 75 64 65 20 22 | 4c 75 6d 69 6e 61 6e 63 |nclude "|Luminanc|
|000008c0| 65 52 65 63 6f 72 64 31 | 2e 68 22 09 09 09 09 09 |eRecord1|.h".....|
|000008d0| 2f 2f 20 72 65 61 64 20 | 61 74 20 63 6f 6d 70 69 |// read |at compi|
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|00000920| 72 69 6e 74 66 28 22 57 | 68 69 63 68 20 73 63 72 |rintf("W|hich scr|
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|00000940| 6b 65 20 74 6f 20 63 61 | 6c 69 62 72 61 74 65 20 |ke to ca|librate |
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|00000990| 65 6e 29 3b 0d 09 7d 0d | 09 65 6c 73 65 20 4c 52 |en);..}.|.else LR|
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|000009e0| 52 65 61 64 4c 75 6d 69 | 6e 61 6e 63 65 52 65 63 |ReadLumi|nanceRec|
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|00000a00| 29 3b 09 09 2f 2f 20 74 | 72 79 20 74 6f 20 72 65 |);..// t|ry to re|
|00000a10| 61 64 20 6c 61 74 65 73 | 74 20 4c 75 6d 69 6e 61 |ad lates|t Lumina|
|00000a20| 6e 63 65 52 65 63 6f 72 | 64 0d 09 69 66 28 69 3c |nceRecor|d..if(i<|
|00000a30| 31 29 70 72 69 6e 74 66 | 28 22 57 61 72 6e 69 6e |1)printf|("Warnin|
|00000a40| 67 3a 20 63 6f 75 6c 64 | 6e 27 74 20 66 69 6e 64 |g: could|n't find|
|00000a50| 20 d2 25 73 d3 2e 20 43 | 61 6c 69 62 72 61 74 69 | .%s.. C|alibrati|
|00000a60| 6e 67 20 73 63 72 65 65 | 6e 20 25 64 2e 5c 6e 22 |ng scree|n %d.\n"|
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|00000a90| 53 63 72 65 65 6e 3d 4c | 52 2e 73 63 72 65 65 6e |Screen=L|R.screen|
|00000aa0| 3b 0d 0d 09 6d 74 66 53 | 74 79 6c 65 5b 30 5d 2e |;...mtfS|tyle[0].|
|00000ab0| 63 6f 6e 74 69 6e 75 69 | 6e 67 3d 30 3b 0d 09 6d |continui|ng=0;..m|
|00000ac0| 74 66 53 74 79 6c 65 5b | 30 5d 2e 6c 69 6e 65 57 |tfStyle[|0].lineW|
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|00000af0| 3d 30 3b 0d 09 6d 74 66 | 53 74 79 6c 65 5b 30 5d |=0;..mtf|Style[0]|
|00000b00| 2e 64 61 73 68 5b 30 5d | 3d 30 3b 0d 09 6d 74 66 |.dash[0]|=0;..mtf|
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|00000b30| 5b 30 5d 2e 63 6f 6c 6f | 72 3d 62 6c 61 63 6b 43 |[0].colo|r=blackC|
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|00000c20| 72 69 6e 74 66 45 78 69 | 74 28 22 53 6f 72 72 79 |rintfExi|t("Sorry|
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|00000c40| 22 25 73 5c 22 2e 5c 30 | 30 37 5c 6e 22 2c 6f 75 |"%s\".\0|07\n",ou|
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|00000c60| 49 6e 66 6f 28 6f 75 74 | 4e 61 6d 65 2c 27 54 45 |Info(out|Name,'TE|
|00000c70| 58 54 27 2c 27 51 4b 50 | 54 27 29 3b 09 2f 2a 20 |XT','QKP|T');./* |
|00000c80| 66 6f 72 20 4b 61 6c 65 | 69 64 61 67 72 61 70 68 |for Kale|idagraph|
|00000c90| 20 2a 2f 0d 0d 09 2f 2a | 20 46 69 6e 64 20 64 65 | */.../*| Find de|
|00000ca0| 76 69 63 65 20 63 6f 72 | 72 65 73 70 6f 6e 64 69 |vice cor|respondi|
|00000cb0| 6e 67 20 74 6f 20 74 68 | 65 20 65 78 70 65 72 69 |ng to th|e experi|
|00000cc0| 6d 65 6e 74 61 6c 20 73 | 63 72 65 65 6e 2e 20 2a |mental s|creen. *|
|00000cd0| 2f 0d 09 6f 6c 64 47 44 | 48 61 6e 64 6c 65 3d 47 |/..oldGD|Handle=G|
|00000ce0| 65 74 47 44 65 76 69 63 | 65 28 29 3b 0d 09 64 65 |etGDevic|e();..de|
|00000cf0| 76 69 63 65 20 3d 20 47 | 65 74 53 63 72 65 65 6e |vice = G|etScreen|
|00000d00| 44 65 76 69 63 65 28 4c | 52 2e 73 63 72 65 65 6e |Device(L|R.screen|
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|00000d30| 74 44 65 70 74 68 28 64 | 65 76 69 63 65 2c 38 2c |tDepth(d|evice,8,|
|00000d40| 31 2c 31 29 3b 09 2f 2a | 20 38 2d 62 69 74 20 70 |1,1);./*| 8-bit p|
|00000d50| 69 78 65 6c 73 2c 20 63 | 6f 6c 6f 72 20 6d 6f 64 |ixels, c|olor mod|
|00000d60| 65 20 2a 2f 0d 09 77 69 | 6e 64 6f 77 20 3d 20 47 |e */..wi|ndow = G|
|00000d70| 44 4f 70 65 6e 57 69 6e | 64 6f 77 28 64 65 76 69 |DOpenWin|dow(devi|
|00000d80| 63 65 29 3b 0d 09 0d 09 | 69 66 28 6f 6c 64 53 63 |ce);....|if(oldSc|
|00000d90| 72 65 65 6e 3d 3d 4c 52 | 2e 73 63 72 65 65 6e 29 |reen==LR|.screen)|
|00000da0| 7b 0d 09 09 70 72 69 6e | 74 66 28 22 4c 75 6d 69 |{...prin|tf("Lumi|
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|00000dd0| 2e 64 61 74 65 29 3b 0d | 09 09 70 72 69 6e 74 66 |.date);.|..printf|
|00000de0| 28 22 61 74 20 25 2e 32 | 66 20 25 73 20 62 79 20 |("at %.2|f %s by |
|00000df0| 25 73 5c 6e 22 2c 4c 52 | 2e 4c 42 61 63 6b 67 72 |%s\n",LR|.LBackgr|
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|00000e20| 66 28 22 52 61 6e 67 65 | 20 69 73 20 25 2e 31 66 |f("Range| is %.1f|
|00000e30| 20 74 6f 20 25 2e 31 66 | 20 25 73 2e 5c 6e 22 2c | to %.1f| %s.\n",|
|00000e40| 4c 52 2e 4c 4d 69 6e 2c | 4c 52 2e 4c 4d 61 78 2c |LR.LMin,|LR.LMax,|
|00000e50| 4c 52 2e 75 6e 69 74 73 | 29 3b 0d 09 7d 0d 09 4c |LR.units|);..}..L|
|00000e60| 3d 4c 52 2e 4c 42 61 63 | 6b 67 72 6f 75 6e 64 3b |=LR.LBac|kground;|
|00000e70| 09 2f 2a 20 64 65 73 69 | 72 65 64 20 6d 65 61 6e |./* desi|red mean|
|00000e80| 20 6c 75 6d 69 6e 61 6e | 63 65 20 2a 2f 0d 09 70 | luminan|ce */..p|
|00000e90| 72 69 6e 74 66 28 22 45 | 6e 74 65 72 20 64 65 73 |rintf("E|nter des|
|00000ea0| 69 72 65 64 20 64 69 73 | 70 6c 61 79 20 6c 75 6d |ired dis|play lum|
|00000eb0| 69 6e 61 6e 63 65 20 69 | 6e 20 63 64 2f 6d 5e 32 |inance i|n cd/m^2|
|00000ec0| 20 28 25 2e 32 66 29 3a | 22 2c 4c 29 3b 0d 09 66 | (%.2f):|",L);..f|
|00000ed0| 67 65 74 73 28 73 74 72 | 69 6e 67 2c 73 69 7a 65 |gets(str|ing,size|
|00000ee0| 6f 66 28 73 74 72 69 6e | 67 29 2d 31 2c 73 74 64 |of(strin|g)-1,std|
|00000ef0| 69 6e 29 3b 0d 09 73 73 | 63 61 6e 66 28 73 74 72 |in);..ss|canf(str|
|00000f00| 69 6e 67 2c 22 25 6c 66 | 22 2c 20 26 4c 29 3b 0d |ing,"%lf|", &L);.|
|00000f10| 0d 09 63 3d 30 2e 39 3b | 0d 09 63 3d 4d 49 4e 28 |..c=0.9;|..c=MIN(|
|00000f20| 63 2c 4d 49 4e 28 28 4c | 52 2e 4c 4d 61 78 2d 4c |c,MIN((L|R.LMax-L|
|00000f30| 29 2f 4c 2c 28 4c 2d 4c | 52 2e 4c 4d 69 6e 29 2f |)/L,(L-L|R.LMin)/|
|00000f40| 4c 29 29 3b 0d 09 70 72 | 69 6e 74 66 28 22 43 6f |L));..pr|intf("Co|
|00000f50| 6e 74 72 61 73 74 20 25 | 2e 31 66 5c 6e 22 2c 63 |ntrast %|.1f\n",c|
|00000f60| 29 3b 0d 09 70 72 69 6e | 74 66 28 22 43 6f 6d 70 |);..prin|tf("Comp|
|00000f70| 75 74 69 6e 67 20 73 69 | 6e 75 73 6f 69 64 61 6c |uting si|nusoidal|
|00000f80| 20 6c 6f 6f 6b 75 70 20 | 74 61 62 6c 65 20 2e 20 | lookup |table . |
|00000f90| 2e 20 2e 5c 6e 22 29 3b | 0d 09 66 6f 72 28 69 3d |. .\n");|..for(i=|
|00000fa0| 30 3b 69 3c 32 35 36 3b | 69 2b 2b 29 7b 0d 09 09 |0;i<256;|i++){...|
|00000fb0| 53 65 74 4c 75 6d 69 6e | 61 6e 63 65 28 64 65 76 |SetLumin|ance(dev|
|00000fc0| 69 63 65 2c 26 4c 52 2c | 69 2c 4c 2a 28 31 2e 30 |ice,&LR,|i,L*(1.0|
|00000fd0| 2b 63 2a 73 69 6e 28 54 | 57 4f 5f 50 49 2a 69 2f |+c*sin(T|WO_PI*i/|
|00000fe0| 32 35 36 2e 30 29 29 2c | 4c 2a 28 31 2e 30 2d 63 |256.0)),|L*(1.0-c|
|00000ff0| 29 2c 4c 2a 28 31 2e 30 | 2b 63 29 29 3b 0d 09 7d |),L*(1.0|+c));..}|
|00001000| 0d 0d 09 74 50 65 72 69 | 6f 64 3d 36 34 3b 09 09 |...tPeri|od=64;..|
|00001010| 09 09 09 09 09 09 09 2f | 2a 20 66 72 61 6d 65 73 |......./|* frames|
|00001020| 20 69 6e 20 6f 6e 65 20 | 74 65 6d 70 6f 72 61 6c | in one |temporal|
|00001030| 20 70 65 72 69 6f 64 20 | 2a 2f 0d 09 77 69 64 74 | period |*/..widt|
|00001040| 68 3d 77 69 6e 64 6f 77 | 2d 3e 70 6f 72 74 52 65 |h=window|->portRe|
|00001050| 63 74 2e 72 69 67 68 74 | 3b 09 09 09 09 2f 2a 20 |ct.right|;..../* |
|00001060| 70 69 78 65 6c 73 20 61 | 63 72 6f 73 73 20 73 63 |pixels a|cross sc|
|00001070| 72 65 65 6e 20 2a 2f 0d | 09 53 65 74 52 65 63 74 |reen */.|.SetRect|
|00001080| 28 26 72 2c 30 2c 30 2c | 32 2a 74 50 65 72 69 6f |(&r,0,0,|2*tPerio|
|00001090| 64 2c 32 2a 74 50 65 72 | 69 6f 64 29 3b 0d 09 4f |d,2*tPer|iod);..O|
|000010a0| 66 66 73 65 74 52 65 63 | 74 28 26 72 2c 36 34 2c |ffsetRec|t(&r,64,|
|000010b0| 36 34 29 3b 0d 09 70 6c | 6f 74 57 69 6e 64 6f 77 |64);..pl|otWindow|
|000010c0| 3d 4e 65 77 57 69 6e 64 | 6f 77 28 4e 55 4c 4c 2c |=NewWind|ow(NULL,|
|000010d0| 26 72 2c 22 5c 70 4c 22 | 2c 31 2c 6e 6f 47 72 6f |&r,"\pL"|,1,noGro|
|000010e0| 77 44 6f 63 50 72 6f 63 | 2c 28 57 69 6e 64 6f 77 |wDocProc|,(Window|
|000010f0| 50 74 72 29 20 2d 31 4c | 2c 46 41 4c 53 45 2c 30 |Ptr) -1L|,FALSE,0|
|00001100| 4c 29 3b 0d 09 53 65 74 | 52 65 63 74 28 26 72 2c |L);..Set|Rect(&r,|
|00001110| 30 2c 30 2c 31 39 32 2c | 31 39 32 29 3b 0d 09 4f |0,0,192,|192);..O|
|00001120| 66 66 73 65 74 52 65 63 | 74 28 26 72 2c 36 34 30 |ffsetRec|t(&r,640|
|00001130| 2d 72 2e 72 69 67 68 74 | 2d 36 34 2c 36 34 29 3b |-r.right|-64,64);|
|00001140| 0d 09 6d 74 66 57 69 6e | 64 6f 77 3d 4e 65 77 57 |..mtfWin|dow=NewW|
|00001150| 69 6e 64 6f 77 28 4e 55 | 4c 4c 2c 26 72 2c 22 5c |indow(NU|LL,&r,"\|
|00001160| 70 4d 54 46 22 2c 31 2c | 6e 6f 47 72 6f 77 44 6f |pMTF",1,|noGrowDo|
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|00001180| 29 20 2d 31 4c 2c 46 41 | 4c 53 45 2c 30 4c 29 3b |) -1L,FA|LSE,0L);|
|00001190| 0d 09 4d 65 61 73 75 72 | 65 43 6f 6e 74 72 61 73 |..Measur|eContras|
|000011a0| 74 28 64 65 76 69 63 65 | 2c 26 4c 52 2c 74 50 65 |t(device|,&LR,tPe|
|000011b0| 72 69 6f 64 2c 63 48 2c | 70 6c 6f 74 57 69 6e 64 |riod,cH,|plotWind|
|000011c0| 6f 77 29 3b 09 09 2f 2a | 20 6d 65 61 73 75 72 65 |ow);../*| measure|
|000011d0| 20 76 42 6c 61 63 6b 20 | 2a 2f 0d 09 66 66 70 72 | vBlack |*/..ffpr|
|000011e0| 69 6e 74 66 28 6f 75 74 | 66 69 6c 65 2c 0d 09 09 |intf(out|file,...|
|000011f0| 22 6e 6f 74 65 73 22 20 | 22 5c 74 63 79 63 6c 65 |"notes" |"\tcycle|
|00001200| 73 2f 70 69 78 65 6c 22 | 20 22 5c 74 63 79 63 6c |s/pixel"| "\tcycl|
|00001210| 65 73 2f 73 63 72 65 65 | 6e 22 20 0d 09 09 22 5c |es/scree|n" ..."\|
|00001220| 74 48 6f 72 69 7a 2e 20 | 47 72 61 74 69 6e 67 20 |tHoriz. |Grating |
|00001230| 47 61 69 6e 22 20 22 5c | 74 56 65 72 74 2e 20 47 |Gain" "\|tVert. G|
|00001240| 72 61 74 69 6e 67 20 47 | 61 69 6e 22 20 22 5c 74 |rating G|ain" "\t|
|00001250| 56 65 72 74 2e 2f 48 6f | 72 69 7a 2e 22 29 3b 0d |Vert./Ho|riz.");.|
|00001260| 09 66 70 72 69 6e 74 66 | 28 6f 75 74 66 69 6c 65 |.fprintf|(outfile|
|00001270| 5b 30 5d 2c 22 5c 6e 22 | 29 3b 0d 09 66 70 72 69 |[0],"\n"|);..fpri|
|00001280| 6e 74 66 28 6f 75 74 66 | 69 6c 65 5b 31 5d 2c 22 |ntf(outf|ile[1],"|
|00001290| 5c 74 63 22 20 22 5c 74 | 63 48 5b 30 5d 22 20 22 |\tc" "\t|cH[0]" "|
|000012a0| 5c 74 63 48 5b 31 5d 22 | 20 22 5c 74 63 48 5b 32 |\tcH[1]"| "\tcH[2|
|000012b0| 5d 22 20 22 5c 74 63 56 | 5b 30 5d 22 20 22 5c 74 |]" "\tcV|[0]" "\t|
|000012c0| 63 56 5b 31 5d 22 20 22 | 5c 74 63 56 5b 32 5d 22 |cV[1]" "|\tcV[2]"|
|000012d0| 20 0d 09 09 22 5c 74 28 | 63 56 5b 30 5d 2d 63 48 | ..."\t(|cV[0]-cH|
|000012e0| 5b 30 5d 29 2f 63 48 5b | 30 5d 22 20 22 5c 74 63 |[0])/cH[|0]" "\tc|
|000012f0| 56 5b 32 5d 2f 28 63 2a | 56 2f 48 29 5e 32 22 20 |V[2]/(c*|V/H)^2" |
|00001300| 22 5c 74 28 63 56 5b 30 | 5d 2d 63 48 5b 30 5d 29 |"\t(cV[0|]-cH[0])|
|00001310| 2f 63 48 5b 30 5d 2f 28 | 63 2a 56 2f 48 29 5e 32 |/cH[0]/(|c*V/H)^2|
|00001320| 22 0d 09 09 22 5c 6e 22 | 29 3b 0d 09 66 66 70 72 |"..."\n"|);..ffpr|
|00001330| 69 6e 74 66 28 6f 75 74 | 66 69 6c 65 2c 22 6e 6f |intf(out|file,"no|
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|00001360| 20 63 6f 6c 75 6d 6e 20 | 2a 2f 0d 09 66 6f 72 28 | column |*/..for(|
|00001370| 66 4e 6f 6d 69 6e 61 6c | 3d 30 2e 30 3b 3b 66 4e |fNominal|=0.0;;fN|
|00001380| 6f 6d 69 6e 61 6c 3d 4d | 41 58 28 66 4e 6f 6d 69 |ominal=M|AX(fNomi|
|00001390| 6e 61 6c 2a 70 6f 77 28 | 32 2e 30 2c 31 2e 30 2f |nal*pow(|2.0,1.0/|
|000013a0| 32 2e 30 29 2c 66 4e 6f | 6d 69 6e 61 6c 2b 31 2e |2.0),fNo|minal+1.|
|000013b0| 30 2f 77 69 64 74 68 29 | 29 7b 0d 09 09 66 3d 66 |0/width)|){...f=f|
|000013c0| 6c 6f 6f 72 28 66 4e 6f | 6d 69 6e 61 6c 2a 77 69 |loor(fNo|minal*wi|
|000013d0| 64 74 68 2b 30 2e 35 29 | 2f 77 69 64 74 68 3b 20 |dth+0.5)|/width; |
|000013e0| 2f 2a 20 69 6e 74 65 67 | 72 61 6c 20 70 65 72 69 |/* integ|ral peri|
|000013f0| 6f 64 73 20 66 6f 72 20 | 7a 65 72 6f 20 6d 65 61 |ods for |zero mea|
|00001400| 6e 20 6f 76 65 72 20 6c | 69 6e 65 20 2a 2f 0d 09 |n over l|ine */..|
|00001410| 09 69 66 28 66 4e 6f 6d | 69 6e 61 6c 3e 30 2e 35 |.if(fNom|inal>0.5|
|00001420| 29 66 3d 30 2e 35 3b 0d | 09 09 2f 2a 20 68 6f 72 |)f=0.5;.|../* hor|
|00001430| 69 7a 6f 6e 74 61 6c 20 | 67 72 61 74 69 6e 67 20 |izontal |grating |
|00001440| 2a 2f 0d 09 09 73 72 63 | 52 65 63 74 3d 64 73 74 |*/...src|Rect=dst|
|00001450| 52 65 63 74 3d 77 69 6e | 64 6f 77 2d 3e 70 6f 72 |Rect=win|dow->por|
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|00001470| 2e 6c 65 66 74 3d 73 72 | 63 52 65 63 74 2e 72 69 |.left=sr|cRect.ri|
|00001480| 67 68 74 3d 31 3b 0d 09 | 09 66 6f 72 28 69 3d 30 |ght=1;..|.for(i=0|
|00001490| 3b 69 3c 73 72 63 52 65 | 63 74 2e 62 6f 74 74 6f |;i<srcRe|ct.botto|
|000014a0| 6d 3b 69 2b 2b 29 7b 0d | 09 09 09 72 6f 77 5b 30 |m;i++){.|...row[0|
|000014b0| 5d 3d 31 32 38 2e 30 2b | 31 32 37 2e 35 2a 73 61 |]=128.0+|127.5*sa|
|000014c0| 77 28 54 57 4f 5f 50 49 | 2a 66 2a 69 29 3b 0d 09 |w(TWO_PI|*f*i);..|
|000014d0| 09 09 53 65 74 57 69 6e | 64 6f 77 50 69 78 65 6c |..SetWin|dowPixel|
|000014e0| 73 51 75 69 63 6b 6c 79 | 28 28 57 69 6e 64 6f 77 |sQuickly|((Window|
|000014f0| 50 74 72 29 77 69 6e 64 | 6f 77 2c 30 2c 69 2c 72 |Ptr)wind|ow,0,i,r|
|00001500| 6f 77 2c 31 29 3b 0d 09 | 09 7d 0d 09 09 2f 2a 20 |ow,1);..|.}.../* |
|00001510| 43 6f 70 79 42 69 74 73 | 20 75 73 65 73 20 74 68 |CopyBits| uses th|
|00001520| 65 20 69 6e 76 65 72 73 | 65 20 63 6f 6c 6f 72 20 |e invers|e color |
|00001530| 74 61 62 6c 65 20 6f 66 | 20 74 68 65 20 63 75 72 |table of| the cur|
|00001540| 72 65 6e 74 20 47 44 65 | 76 69 63 65 2e 20 2a 2f |rent GDe|vice. */|
|00001550| 0d 09 09 53 65 74 47 44 | 65 76 69 63 65 28 64 65 |...SetGD|evice(de|
|00001560| 76 69 63 65 29 3b 0d 09 | 09 43 6f 70 79 42 69 74 |vice);..|.CopyBit|
|00001570| 73 28 28 42 69 74 4d 61 | 70 20 2a 29 2a 77 69 6e |s((BitMa|p *)*win|
|00001580| 64 6f 77 2d 3e 70 6f 72 | 74 50 69 78 4d 61 70 2c |dow->por|tPixMap,|
|00001590| 28 42 69 74 4d 61 70 20 | 2a 29 2a 77 69 6e 64 6f |(BitMap |*)*windo|
|000015a0| 77 2d 3e 70 6f 72 74 50 | 69 78 4d 61 70 2c 0d 09 |w->portP|ixMap,..|
|000015b0| 09 09 26 73 72 63 52 65 | 63 74 2c 26 64 73 74 52 |..&srcRe|ct,&dstR|
|000015c0| 65 63 74 2c 73 72 63 43 | 6f 70 79 2c 4e 55 4c 4c |ect,srcC|opy,NULL|
|000015d0| 29 3b 0d 09 09 53 65 74 | 47 44 65 76 69 63 65 28 |);...Set|GDevice(|
|000015e0| 6f 6c 64 47 44 48 61 6e | 64 6c 65 29 3b 0d 09 09 |oldGDHan|dle);...|
|000015f0| 63 4f 75 74 3d 4d 65 61 | 73 75 72 65 43 6f 6e 74 |cOut=Mea|sureCont|
|00001600| 72 61 73 74 28 64 65 76 | 69 63 65 2c 26 4c 52 2c |rast(dev|ice,&LR,|
|00001610| 74 50 65 72 69 6f 64 2c | 63 48 2c 70 6c 6f 74 57 |tPeriod,|cH,plotW|
|00001620| 69 6e 64 6f 77 29 3b 0d | 09 09 66 66 70 72 69 6e |indow);.|..ffprin|
|00001630| 74 66 28 6f 75 74 66 69 | 6c 65 2c 22 5c 74 25 31 |tf(outfi|le,"\t%1|
|00001640| 30 2e 35 66 22 20 22 5c | 74 25 31 30 2e 32 66 22 |0.5f" "\|t%10.2f"|
|00001650| 20 22 5c 74 25 31 32 2e | 36 66 22 2c 66 2c 66 2a | "\t%12.|6f",f,f*|
|00001660| 64 73 74 52 65 63 74 2e | 72 69 67 68 74 2c 63 4f |dstRect.|right,cO|
|00001670| 75 74 2f 63 29 3b 0d 09 | 09 2f 2a 20 64 72 61 77 |ut/c);..|./* draw|
|00001680| 20 74 68 65 20 4d 54 46 | 20 2a 2f 0d 09 09 50 6c | the MTF| */...Pl|
|00001690| 6f 74 58 59 28 6d 74 66 | 57 69 6e 64 6f 77 0d 09 |otXY(mtf|Window..|
|000016a0| 09 09 2c 6c 6f 67 28 66 | 2f 28 31 2e 2f 36 34 30 |..,log(f|/(1./640|
|000016b0| 2e 29 29 2f 6c 6f 67 28 | 30 2e 35 2f 28 31 2e 2f |.))/log(|0.5/(1./|
|000016c0| 36 34 30 2e 29 29 2c 20 | 6c 6f 67 28 63 4f 75 74 |640.)), |log(cOut|
|000016d0| 2f 63 2f 30 2e 33 29 2f | 6c 6f 67 28 31 2e 31 2f |/c/0.3)/|log(1.1/|
|000016e0| 30 2e 33 29 0d 09 09 09 | 2c 26 6d 74 66 53 74 79 |0.3)....|,&mtfSty|
|000016f0| 6c 65 5b 30 5d 29 3b 0d | 0d 09 09 2f 2a 20 76 65 |le[0]);.|.../* ve|
|00001700| 72 74 69 63 61 6c 20 67 | 72 61 74 69 6e 67 20 2a |rtical g|rating *|
|00001710| 2f 0d 09 09 73 72 63 52 | 65 63 74 3d 64 73 74 52 |/...srcR|ect=dstR|
|00001720| 65 63 74 3d 77 69 6e 64 | 6f 77 2d 3e 70 6f 72 74 |ect=wind|ow->port|
|00001730| 52 65 63 74 3b 0d 09 09 | 64 73 74 52 65 63 74 2e |Rect;...|dstRect.|
|00001740| 62 6f 74 74 6f 6d 3d 73 | 72 63 52 65 63 74 2e 74 |bottom=s|rcRect.t|
|00001750| 6f 70 3d 73 72 63 52 65 | 63 74 2e 62 6f 74 74 6f |op=srcRe|ct.botto|
|00001760| 6d 2d 31 3b 0d 09 09 66 | 6f 72 28 69 3d 30 3b 69 |m-1;...f|or(i=0;i|
|00001770| 3c 73 72 63 52 65 63 74 | 2e 72 69 67 68 74 3b 69 |<srcRect|.right;i|
|00001780| 2b 2b 29 72 6f 77 5b 69 | 5d 3d 31 32 38 2e 30 2b |++)row[i|]=128.0+|
|00001790| 31 32 37 2e 35 2a 73 61 | 77 28 54 57 4f 5f 50 49 |127.5*sa|w(TWO_PI|
|000017a0| 2a 66 2a 69 29 3b 0d 09 | 09 53 65 74 57 69 6e 64 |*f*i);..|.SetWind|
|000017b0| 6f 77 50 69 78 65 6c 73 | 51 75 69 63 6b 6c 79 28 |owPixels|Quickly(|
|000017c0| 28 57 69 6e 64 6f 77 50 | 74 72 29 77 69 6e 64 6f |(WindowP|tr)windo|
|000017d0| 77 2c 30 2c 73 72 63 52 | 65 63 74 2e 74 6f 70 2c |w,0,srcR|ect.top,|
|000017e0| 72 6f 77 2c 73 72 63 52 | 65 63 74 2e 72 69 67 68 |row,srcR|ect.righ|
|000017f0| 74 29 3b 0d 09 09 53 65 | 74 47 44 65 76 69 63 65 |t);...Se|tGDevice|
|00001800| 28 64 65 76 69 63 65 29 | 3b 0d 09 09 43 6f 70 79 |(device)|;...Copy|
|00001810| 42 69 74 73 28 28 42 69 | 74 4d 61 70 20 2a 29 2a |Bits((Bi|tMap *)*|
|00001820| 77 69 6e 64 6f 77 2d 3e | 70 6f 72 74 50 69 78 4d |window->|portPixM|
|00001830| 61 70 2c 28 42 69 74 4d | 61 70 20 2a 29 2a 77 69 |ap,(BitM|ap *)*wi|
|00001840| 6e 64 6f 77 2d 3e 70 6f | 72 74 50 69 78 4d 61 70 |ndow->po|rtPixMap|
|00001850| 2c 0d 09 09 09 26 73 72 | 63 52 65 63 74 2c 26 64 |,....&sr|cRect,&d|
|00001860| 73 74 52 65 63 74 2c 73 | 72 63 43 6f 70 79 2c 4e |stRect,s|rcCopy,N|
|00001870| 55 4c 4c 29 3b 0d 09 09 | 53 65 74 47 44 65 76 69 |ULL);...|SetGDevi|
|00001880| 63 65 28 6f 6c 64 47 44 | 48 61 6e 64 6c 65 29 3b |ce(oldGD|Handle);|
|00001890| 0d 09 09 63 4f 75 74 3d | 4d 65 61 73 75 72 65 43 |...cOut=|MeasureC|
|000018a0| 6f 6e 74 72 61 73 74 28 | 64 65 76 69 63 65 2c 26 |ontrast(|device,&|
|000018b0| 4c 52 2c 74 50 65 72 69 | 6f 64 2c 63 56 2c 70 6c |LR,tPeri|od,cV,pl|
|000018c0| 6f 74 57 69 6e 64 6f 77 | 29 3b 0d 09 09 66 66 70 |otWindow|);...ffp|
|000018d0| 72 69 6e 74 66 28 6f 75 | 74 66 69 6c 65 2c 22 5c |rintf(ou|tfile,"\|
|000018e0| 74 25 32 30 2e 36 66 22 | 20 22 5c 74 25 31 38 2e |t%20.6f"| "\t%18.|
|000018f0| 36 66 22 2c 63 4f 75 74 | 2f 63 2c 63 56 5b 31 5d |6f",cOut|/c,cV[1]|
|00001900| 2f 63 48 5b 31 5d 29 3b | 0d 09 09 66 70 72 69 6e |/cH[1]);|...fprin|
|00001910| 74 66 28 6f 75 74 66 69 | 6c 65 5b 30 5d 2c 22 5c |tf(outfi|le[0],"\|
|00001920| 6e 22 29 3b 0d 09 09 66 | 70 72 69 6e 74 66 28 6f |n");...f|printf(o|
|00001930| 75 74 66 69 6c 65 5b 31 | 5d 2c 22 5c 74 25 66 22 |utfile[1|],"\t%f"|
|00001940| 20 22 5c 74 25 66 22 20 | 22 5c 74 25 66 22 20 22 | "\t%f" |"\t%f" "|
|00001950| 5c 74 25 66 22 20 22 5c | 74 25 66 22 20 22 5c 74 |\t%f" "\|t%f" "\t|
|00001960| 25 66 22 20 22 5c 74 25 | 66 22 0d 09 09 09 2c 63 |%f" "\t%|f"....,c|
|00001970| 2c 63 48 5b 30 5d 2c 63 | 48 5b 31 5d 2c 63 48 5b |,cH[0],c|H[1],cH[|
|00001980| 32 5d 2c 63 56 5b 30 5d | 2c 63 56 5b 31 5d 2c 63 |2],cV[0]|,cV[1],c|
|00001990| 56 5b 32 5d 29 3b 0d 09 | 09 61 3d 28 63 56 5b 30 |V[2]);..|.a=(cV[0|
|000019a0| 5d 2d 63 48 5b 30 5d 29 | 2f 63 48 5b 30 5d 3b 09 |]-cH[0])|/cH[0];.|
|000019b0| 2f 2a 20 64 63 20 65 72 | 72 6f 72 2c 20 65 78 70 |/* dc er|ror, exp|
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|000019d0| 72 61 73 74 20 2a 2f 0d | 09 09 62 3d 63 56 5b 31 |rast */.|..b=cV[1|
|000019e0| 5d 2f 63 48 5b 31 5d 3b | 09 09 09 2f 2a 20 63 6f |]/cH[1];|.../* co|
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|00001a30| 74 25 66 22 20 22 5c 74 | 25 66 22 20 22 5c 6e 22 |t%f" "\t|%f" "\n"|
|00001a40| 0d 09 09 09 2c 61 2c 63 | 56 5b 32 5d 2f 28 63 2a |....,a,c|V[2]/(c*|
|00001a50| 62 2a 63 2a 62 29 2c 61 | 2f 28 63 2a 62 2a 63 2a |b*c*b),a|/(c*b*c*|
|00001a60| 62 29 29 3b 0d 09 09 2f | 2a 20 64 72 61 77 20 74 |b));.../|* draw t|
|00001a70| 68 65 20 4d 54 46 20 2a | 2f 0d 09 09 50 6c 6f 74 |he MTF *|/...Plot|
|00001a80| 58 59 28 6d 74 66 57 69 | 6e 64 6f 77 0d 09 09 09 |XY(mtfWi|ndow....|
|00001a90| 2c 6c 6f 67 28 66 2f 28 | 31 2e 2f 36 34 30 2e 29 |,log(f/(|1./640.)|
|00001aa0| 29 2f 6c 6f 67 28 30 2e | 35 2f 28 31 2e 2f 36 34 |)/log(0.|5/(1./64|
|00001ab0| 30 2e 29 29 2c 20 6c 6f | 67 28 63 4f 75 74 2f 63 |0.)), lo|g(cOut/c|
|00001ac0| 2f 30 2e 33 29 2f 6c 6f | 67 28 31 2e 31 2f 30 2e |/0.3)/lo|g(1.1/0.|
|00001ad0| 33 29 0d 09 09 09 2c 26 | 6d 74 66 53 74 79 6c 65 |3)....,&|mtfStyle|
|00001ae0| 5b 31 5d 29 3b 0d 09 09 | 0d 09 09 69 66 28 66 3d |[1]);...|...if(f=|
|00001af0| 3d 30 2e 35 29 62 72 65 | 61 6b 3b 0d 09 7d 0d 09 |=0.5)bre|ak;..}..|
|00001b00| 0d 09 2f 2a 20 70 72 69 | 6e 74 20 6e 6f 74 65 73 |../* pri|nt notes|
|00001b10| 20 2a 2f 0d 09 49 55 44 | 61 74 65 53 74 72 69 6e | */..IUD|ateStrin|
|00001b20| 67 28 73 65 63 6f 6e 64 | 73 2c 6c 6f 6e 67 44 61 |g(second|s,longDa|
|00001b30| 74 65 2c 28 75 6e 73 69 | 67 6e 65 64 20 63 68 61 |te,(unsi|gned cha|
|00001b40| 72 20 2a 29 73 74 72 69 | 6e 67 29 3b 0d 09 70 32 |r *)stri|ng);..p2|
|00001b50| 63 73 74 72 28 28 75 6e | 73 69 67 6e 65 64 20 63 |cstr((un|signed c|
|00001b60| 68 61 72 20 2a 29 73 74 | 72 69 6e 67 29 3b 0d 09 |har *)st|ring);..|
|00001b70| 49 55 54 69 6d 65 53 74 | 72 69 6e 67 28 73 65 63 |IUTimeSt|ring(sec|
|00001b80| 6f 6e 64 73 2c 46 41 4c | 53 45 2c 28 75 6e 73 69 |onds,FAL|SE,(unsi|
|00001b90| 67 6e 65 64 20 63 68 61 | 72 20 2a 29 73 74 72 69 |gned cha|r *)stri|
|00001ba0| 6e 67 32 29 3b 0d 09 70 | 32 63 73 74 72 28 28 75 |ng2);..p|2cstr((u|
|00001bb0| 6e 73 69 67 6e 65 64 20 | 63 68 61 72 20 2a 29 73 |nsigned |char *)s|
|00001bc0| 74 72 69 6e 67 32 29 3b | 0d 09 66 66 70 72 69 6e |tring2);|..ffprin|
|00001bd0| 74 66 28 6f 75 74 66 69 | 6c 65 2c 22 25 73 20 25 |tf(outfi|le,"%s %|
|00001be0| 73 5c 6e 22 2c 73 74 72 | 69 6e 67 32 2c 73 74 72 |s\n",str|ing2,str|
|00001bf0| 69 6e 67 29 3b 0d 09 66 | 66 70 72 69 6e 74 66 28 |ing);..f|fprintf(|
|00001c00| 6f 75 74 66 69 6c 65 2c | 22 25 2e 31 66 20 48 7a |outfile,|"%.1f Hz|
|00001c10| 5c 6e 22 2c 31 2e 30 2f | 28 74 50 65 72 69 6f 64 |\n",1.0/|(tPeriod|
|00001c20| 2a 30 2e 30 31 35 29 29 | 3b 0d 09 66 66 70 72 69 |*0.015))|;..ffpri|
|00001c30| 6e 74 66 28 6f 75 74 66 | 69 6c 65 2c 22 25 2e 32 |ntf(outf|ile,"%.2|
|00001c40| 66 20 63 64 2f 6d 5e 32 | 5c 6e 22 2c 4c 29 3b 0d |f cd/m^2|\n",L);.|
|00001c50| 09 66 66 70 72 69 6e 74 | 66 28 6f 75 74 66 69 6c |.ffprint|f(outfil|
|00001c60| 65 2c 22 25 2e 33 66 20 | 63 6f 6e 74 72 61 73 74 |e,"%.3f |contrast|
|00001c70| 5c 6e 22 2c 63 29 3b 0d | 09 66 66 70 72 69 6e 74 |\n",c);.|.ffprint|
|00001c80| 66 28 6f 75 74 66 69 6c | 65 2c 22 5c 6e 22 20 22 |f(outfil|e,"\n" "|
|00001c90| 73 63 72 65 65 6e 20 25 | 64 5c 6e 22 2c 4c 52 2e |screen %|d\n",LR.|
|00001ca0| 73 63 72 65 65 6e 29 3b | 0d 09 66 66 70 72 69 6e |screen);|..ffprin|
|00001cb0| 74 66 28 6f 75 74 66 69 | 6c 65 2c 22 5c 22 25 73 |tf(outfi|le,"\"%s|
|00001cc0| 5c 22 20 6d 6f 6e 69 74 | 6f 72 20 25 73 5c 6e 22 |\" monit|or %s\n"|
|00001cd0| 2c 4c 52 2e 6e 61 6d 65 | 2c 4c 52 2e 69 64 29 3b |,LR.name|,LR.id);|
|00001ce0| 0d 09 66 66 70 72 69 6e | 74 66 28 6f 75 74 66 69 |..ffprin|tf(outfi|
|00001cf0| 6c 65 2c 22 6f 6e 20 25 | 73 5c 6e 22 2c 4c 52 2e |le,"on %|s\n",LR.|
|00001d00| 64 61 74 65 29 3b 0d 09 | 66 66 70 72 69 6e 74 66 |date);..|ffprintf|
|00001d10| 28 6f 75 74 66 69 6c 65 | 2c 22 62 79 20 25 73 5c |(outfile|,"by %s\|
|00001d20| 6e 22 2c 4c 52 2e 6e 6f | 74 65 73 29 3b 0d 09 66 |n",LR.no|tes);..f|
|00001d30| 66 70 72 69 6e 74 66 28 | 6f 75 74 66 69 6c 65 2c |fprintf(|outfile,|
|00001d40| 22 61 74 20 25 2e 32 66 | 20 25 73 5c 6e 22 2c 4c |"at %.2f| %s\n",L|
|00001d50| 52 2e 4c 42 61 63 6b 67 | 72 6f 75 6e 64 2c 4c 52 |R.LBackg|round,LR|
|00001d60| 2e 75 6e 69 74 73 29 3b | 0d 0d 09 47 44 44 69 73 |.units);|...GDDis|
|00001d70| 70 6f 73 65 57 69 6e 64 | 6f 77 28 77 69 6e 64 6f |poseWind|ow(windo|
|00001d80| 77 29 3b 0d 09 69 66 28 | 6f 75 74 66 69 6c 65 5b |w);..if(|outfile[|
|00001d90| 31 5d 20 21 3d 20 4e 55 | 4c 4c 29 66 63 6c 6f 73 |1] != NU|LL)fclos|
|00001da0| 65 28 6f 75 74 66 69 6c | 65 5b 31 5d 29 3b 0d 09 |e(outfil|e[1]);..|
|00001db0| 70 72 69 6e 74 66 28 22 | 54 68 65 20 73 75 6d 20 |printf("|The sum |
|00001dc0| 6f 66 20 74 68 65 20 74 | 69 6d 65 73 20 66 6f 72 |of the t|imes for|
|00001dd0| 20 47 65 74 56 6f 6c 74 | 61 67 65 28 29 20 61 6e | GetVolt|age() an|
|00001de0| 64 20 4c 6f 61 64 4c 75 | 6d 69 6e 61 6e 63 65 73 |d LoadLu|minances|
|00001df0| 28 29 20 73 68 6f 75 6c | 64 5c 6e 22 0d 09 09 22 |() shoul|d\n"..."|
|00001e00| 62 65 20 61 62 6f 75 74 | 20 6f 6e 65 20 66 72 61 |be about| one fra|
|00001e10| 6d 65 2c 20 31 35 20 6d | 73 2e 20 49 66 20 69 74 |me, 15 m|s. If it|
|00001e20| 27 73 20 6c 6f 6e 67 65 | 72 2c 20 65 2e 67 2e 20 |'s longe|r, e.g. |
|00001e30| 33 30 20 6d 73 2c 20 79 | 6f 75 20 73 68 6f 75 6c |30 ms, y|ou shoul|
|00001e40| 64 20 72 65 64 75 63 65 | 5c 6e 22 0d 09 09 22 74 |d reduce|\n"..."t|
|00001e50| 68 65 20 76 61 6c 75 65 | 20 6f 66 20 5c 22 66 72 |he value| of \"fr|
|00001e60| 61 6d 65 73 5c 22 20 69 | 6e 20 4d 65 61 73 75 72 |ames\" i|n Measur|
|00001e70| 65 43 6f 6e 74 72 61 73 | 74 28 29 2e 5c 6e 22 29 |eContras|t().\n")|
|00001e80| 3b 0d 09 44 69 73 70 6f | 73 65 57 69 6e 64 6f 77 |;..Dispo|seWindow|
|00001e90| 28 70 6c 6f 74 57 69 6e | 64 6f 77 29 3b 0d 09 44 |(plotWin|dow);..D|
|00001ea0| 69 73 70 6f 73 65 57 69 | 6e 64 6f 77 28 6d 74 66 |isposeWi|ndow(mtf|
|00001eb0| 57 69 6e 64 6f 77 29 3b | 0d 7d 0d 0d 0d 64 6f 75 |Window);|.}...dou|
|00001ec0| 62 6c 65 20 4d 65 61 73 | 75 72 65 43 6f 6e 74 72 |ble Meas|ureContr|
|00001ed0| 61 73 74 28 47 44 48 61 | 6e 64 6c 65 20 64 65 76 |ast(GDHa|ndle dev|
|00001ee0| 69 63 65 2c 4c 75 6d 69 | 6e 61 6e 63 65 52 65 63 |ice,Lumi|nanceRec|
|00001ef0| 6f 72 64 20 2a 4c 50 0d | 09 2c 69 6e 74 20 74 50 |ord *LP.|.,int tP|
|00001f00| 65 72 69 6f 64 2c 64 6f | 75 62 6c 65 20 63 5b 31 |eriod,do|uble c[1|
|00001f10| 30 5d 2c 57 69 6e 64 6f | 77 50 74 72 20 70 6c 6f |0],Windo|wPtr plo|
|00001f20| 74 57 69 6e 64 6f 77 29 | 0d 2f 2a 0d 4d 65 61 73 |tWindow)|./*.Meas|
|00001f30| 75 72 65 73 20 74 68 65 | 20 63 6f 6e 74 72 61 73 |ures the| contras|
|00001f40| 74 20 6f 66 20 61 20 64 | 72 69 66 74 69 6e 67 20 |t of a d|rifting |
|00001f50| 67 72 61 74 69 6e 67 20 | 6f 66 20 75 6e 6b 6e 6f |grating |of unkno|
|00001f60| 77 6e 20 70 68 61 73 65 | 2e 0d 54 68 65 20 74 65 |wn phase|..The te|
|00001f70| 6d 70 6f 72 61 6c 20 70 | 65 72 69 6f 64 20 69 73 |mporal p|eriod is|
|00001f80| 20 74 50 65 72 69 6f 64 | 20 66 72 61 6d 65 73 2e | tPeriod| frames.|
|00001f90| 20 54 68 65 20 63 5b 5d | 20 61 72 72 61 79 20 69 | The c[]| array i|
|00001fa0| 73 0d 66 69 6c 6c 65 64 | 20 77 69 74 68 20 74 68 |s.filled| with th|
|00001fb0| 65 20 61 6d 70 6c 69 74 | 75 64 65 20 73 70 65 63 |e amplit|ude spec|
|00001fc0| 74 72 75 6d 2c 20 77 68 | 65 72 65 20 63 5b 69 5d |trum, wh|ere c[i]|
|00001fd0| 20 69 73 20 74 68 65 20 | 63 6f 6e 74 72 61 73 74 | is the |contrast|
|00001fe0| 20 6f 66 20 74 68 65 20 | 69 2d 74 68 20 68 61 72 | of the |i-th har|
|00001ff0| 6d 6f 6e 69 63 2c 0d 65 | 78 63 65 70 74 20 74 68 |monic,.e|xcept th|
|00002000| 61 74 20 63 5b 30 5d 2c | 20 77 68 69 63 68 20 77 |at c[0],| which w|
|00002010| 6f 75 6c 64 20 61 6c 77 | 61 79 73 20 62 65 20 31 |ould alw|ays be 1|
|00002020| 2c 20 69 6e 73 74 65 61 | 64 20 69 73 20 73 65 74 |, instea|d is set|
|00002030| 20 74 6f 20 74 68 65 20 | 64 63 20 6c 65 76 65 6c | to the |dc level|
|00002040| 2e 0d 2a 2f 0d 7b 0d 09 | 64 6f 75 62 6c 65 20 76 |..*/.{..|double v|
|00002050| 5b 32 35 36 5d 3b 0d 09 | 64 6f 75 62 6c 65 20 70 |[256];..|double p|
|00002060| 5b 31 30 5d 3b 0d 09 72 | 65 67 69 73 74 65 72 20 |[10];..r|egister |
|00002070| 69 6e 74 20 69 2c 6a 3b | 0d 09 43 6f 6c 6f 72 53 |int i,j;|..ColorS|
|00002080| 70 65 63 20 64 6f 75 62 | 6c 65 54 61 62 6c 65 5b |pec doub|leTable[|
|00002090| 35 31 32 5d 3b 09 2f 2f | 20 77 61 73 20 73 74 61 |512];.//| was sta|
|000020a0| 74 69 63 2c 20 64 67 70 | 20 36 2f 31 35 2f 39 34 |tic, dgp| 6/15/94|
|000020b0| 0d 09 73 74 61 74 69 63 | 20 64 6f 75 62 6c 65 20 |..static| double |
|000020c0| 73 69 6e 54 61 62 6c 65 | 5b 32 35 36 5d 2c 63 6f |sinTable|[256],co|
|000020d0| 73 54 61 62 6c 65 5b 32 | 35 36 5d 3b 0d 09 73 74 |sTable[2|56];..st|
|000020e0| 61 74 69 63 20 69 6e 74 | 20 74 61 62 6c 65 50 65 |atic int| tablePe|
|000020f0| 72 69 6f 64 3d 30 3b 0d | 09 72 65 67 69 73 74 65 |riod=0;.|.registe|
|00002100| 72 20 64 6f 75 62 6c 65 | 20 61 2c 62 3b 0d 09 64 |r double| a,b;..d|
|00002110| 6f 75 62 6c 65 20 66 72 | 65 71 75 65 6e 63 79 3d |ouble fr|equency=|
|00002120| 32 30 30 30 2e 2c 67 61 | 69 6e 3d 31 30 30 2e 3b |2000.,ga|in=100.;|
|00002130| 0d 09 64 6f 75 62 6c 65 | 20 66 72 61 6d 65 73 3d |..double| frames=|
|00002140| 30 2e 36 3b 09 2f 2a 20 | 48 6f 77 20 6c 6f 6e 67 |0.6;./* |How long|
|00002150| 20 74 68 65 20 41 2f 44 | 20 73 68 6f 75 6c 64 20 | the A/D| should |
|00002160| 73 70 65 6e 64 20 73 61 | 6d 70 6c 69 6e 67 20 74 |spend sa|mpling t|
|00002170| 68 65 20 70 68 6f 74 6f | 6d 65 74 65 72 20 2a 2f |he photo|meter */|
|00002180| 0d 09 6c 6f 6e 67 20 6e | 3b 0d 09 73 74 61 74 69 |..long n|;..stati|
|00002190| 63 20 64 6f 75 62 6c 65 | 20 76 42 6c 61 63 6b 3d |c double| vBlack=|
|000021a0| 30 2e 30 3b 0d 09 73 74 | 61 74 69 63 20 69 6e 74 |0.0;..st|atic int|
|000021b0| 20 62 6c 61 63 6b 53 65 | 74 3d 30 3b 0d 09 63 68 | blackSe|t=0;..ch|
|000021c0| 61 72 20 73 74 72 69 6e | 67 5b 38 30 5d 3b 0d 09 |ar strin|g[80];..|
|000021d0| 57 69 6e 64 6f 77 50 74 | 72 20 6f 6c 64 50 6f 72 |WindowPt|r oldPor|
|000021e0| 74 3b 0d 09 69 6e 74 20 | 76 30 2c 69 70 3b 0d 0d |t;..int |v0,ip;..|
|000021f0| 09 61 73 73 65 72 74 28 | 53 74 61 63 6b 53 70 61 |.assert(|StackSpa|
|00002200| 63 65 28 29 3e 34 30 30 | 30 29 3b 0d 09 69 66 28 |ce()>400|0);..if(|
|00002210| 74 50 65 72 69 6f 64 3e | 32 35 36 29 7b 0d 09 09 |tPeriod>|256){...|
|00002220| 70 72 69 6e 74 66 28 22 | 57 61 72 6e 69 6e 67 2e |printf("|Warning.|
|00002230| 20 52 65 64 75 63 69 6e | 67 20 74 50 65 72 69 6f | Reducin|g tPerio|
|00002240| 64 20 74 6f 20 32 35 36 | 2e 5c 6e 22 29 3b 0d 09 |d to 256|.\n");..|
|00002250| 09 74 50 65 72 69 6f 64 | 3d 32 35 36 3b 0d 09 7d |.tPeriod|=256;..}|
|00002260| 0d 09 69 66 28 74 61 62 | 6c 65 50 65 72 69 6f 64 |..if(tab|lePeriod|
|00002270| 20 21 3d 20 74 50 65 72 | 69 6f 64 29 7b 0d 09 09 | != tPer|iod){...|
|00002280| 66 6f 72 28 69 3d 30 3b | 69 3c 74 50 65 72 69 6f |for(i=0;|i<tPerio|
|00002290| 64 3b 69 2b 2b 29 7b 0d | 09 09 09 73 69 6e 54 61 |d;i++){.|...sinTa|
|000022a0| 62 6c 65 5b 69 5d 3d 73 | 69 6e 28 69 2a 54 57 4f |ble[i]=s|in(i*TWO|
|000022b0| 5f 50 49 2f 74 50 65 72 | 69 6f 64 29 3b 0d 09 09 |_PI/tPer|iod);...|
|000022c0| 09 63 6f 73 54 61 62 6c | 65 5b 69 5d 3d 63 6f 73 |.cosTabl|e[i]=cos|
|000022d0| 28 69 2a 54 57 4f 5f 50 | 49 2f 74 50 65 72 69 6f |(i*TWO_P|I/tPerio|
|000022e0| 64 29 3b 0d 09 09 7d 0d | 09 09 74 61 62 6c 65 50 |d);...}.|..tableP|
|000022f0| 65 72 69 6f 64 3d 74 50 | 65 72 69 6f 64 3b 0d 09 |eriod=tP|eriod;..|
|00002300| 7d 0d 09 0d 09 6e 3d 28 | 6c 6f 6e 67 29 66 6c 6f |}....n=(|long)flo|
|00002310| 6f 72 28 30 2e 35 2b 66 | 72 65 71 75 65 6e 63 79 |or(0.5+f|requency|
|00002320| 2a 30 2e 30 31 35 2a 66 | 72 61 6d 65 73 29 3b 0d |*0.015*f|rames);.|
|00002330| 0d 09 52 65 6d 65 61 73 | 75 72 65 43 6f 6e 74 72 |..Remeas|ureContr|
|00002340| 61 73 74 3a 0d 09 69 66 | 28 21 62 6c 61 63 6b 53 |ast:..if|(!blackS|
|00002350| 65 74 29 7b 0d 09 09 64 | 6f 75 62 6c 65 54 61 62 |et){...d|oubleTab|
|00002360| 6c 65 5b 30 5d 2e 72 67 | 62 2e 72 65 64 3d 64 6f |le[0].rg|b.red=do|
|00002370| 75 62 6c 65 54 61 62 6c | 65 5b 30 5d 2e 72 67 62 |ubleTabl|e[0].rgb|
|00002380| 2e 67 72 65 65 6e 3d 64 | 6f 75 62 6c 65 54 61 62 |.green=d|oubleTab|
|00002390| 6c 65 5b 30 5d 2e 72 67 | 62 2e 62 6c 75 65 3d 30 |le[0].rg|b.blue=0|
|000023a0| 3b 0d 09 09 66 6f 72 28 | 69 3d 30 3b 69 3c 32 35 |;...for(|i=0;i<25|
|000023b0| 36 3b 69 2b 2b 29 64 6f | 75 62 6c 65 54 61 62 6c |6;i++)do|ubleTabl|
|000023c0| 65 5b 69 5d 3d 64 6f 75 | 62 6c 65 54 61 62 6c 65 |e[i]=dou|bleTable|
|000023d0| 5b 69 2b 32 35 36 5d 3d | 64 6f 75 62 6c 65 54 61 |[i+256]=|doubleTa|
|000023e0| 62 6c 65 5b 30 5d 3b 0d | 09 09 4c 6f 61 64 4c 75 |ble[0];.|..LoadLu|
|000023f0| 6d 69 6e 61 6e 63 65 73 | 28 64 65 76 69 63 65 0d |minances|(device.|
|00002400| 09 09 09 2c 28 4c 75 6d | 69 6e 61 6e 63 65 52 65 |...,(Lum|inanceRe|
|00002410| 63 6f 72 64 20 2a 29 28 | 64 6f 75 62 6c 65 54 61 |cord *)(|doubleTa|
|00002420| 62 6c 65 2b 28 69 25 74 | 50 65 72 69 6f 64 29 2a |ble+(i%t|Period)*|
|00002430| 28 32 35 36 2f 74 50 65 | 72 69 6f 64 29 29 2c 30 |(256/tPe|riod)),0|
|00002440| 2c 32 35 35 29 3b 0d 09 | 09 70 72 69 6e 74 66 28 |,255);..|.printf(|
|00002450| 22 50 6c 65 61 73 65 20 | 62 6c 6f 63 6b 20 61 6c |"Please |block al|
|00002460| 6c 20 6c 69 67 68 74 20 | 74 6f 20 73 65 74 20 62 |l light |to set b|
|00002470| 6c 61 63 6b 2e 20 48 69 | 74 20 63 72 20 77 68 65 |lack. Hi|t cr whe|
|00002480| 6e 20 72 65 61 64 79 3a | 22 29 3b 0d 09 09 67 65 |n ready:|");...ge|
|00002490| 74 73 28 73 74 72 69 6e | 67 29 3b 0d 09 09 76 42 |ts(strin|g);...vB|
|000024a0| 6c 61 63 6b 3d 30 2e 30 | 3b 0d 09 7d 0d 09 65 6c |lack=0.0|;..}..el|
|000024b0| 73 65 20 66 6f 72 28 69 | 3d 30 3b 69 3c 32 35 36 |se for(i|=0;i<256|
|000024c0| 3b 69 2b 2b 29 64 6f 75 | 62 6c 65 54 61 62 6c 65 |;i++)dou|bleTable|
|000024d0| 5b 69 5d 3d 64 6f 75 62 | 6c 65 54 61 62 6c 65 5b |[i]=doub|leTable[|
|000024e0| 69 2b 32 35 36 5d 3d 4c | 50 2d 3e 74 61 62 6c 65 |i+256]=L|P->table|
|000024f0| 5b 69 5d 3b 0d 0d 09 2f | 2a 20 77 61 72 6d 20 75 |[i];.../|* warm u|
|00002500| 70 20 66 6f 72 20 6f 6e | 65 20 70 65 72 69 6f 64 |p for on|e period|
|00002510| 20 62 65 66 6f 72 65 20 | 63 6f 6c 6c 65 63 74 69 | before |collecti|
|00002520| 6e 67 20 64 61 74 61 20 | 2a 2f 0d 09 53 65 74 50 |ng data |*/..SetP|
|00002530| 72 69 6f 72 69 74 79 28 | 37 29 3b 0d 09 66 6f 72 |riority(|7);..for|
|00002540| 28 69 3d 30 3b 69 3c 74 | 50 65 72 69 6f 64 3b 69 |(i=0;i<t|Period;i|
|00002550| 2b 2b 29 7b 0d 09 09 4c | 6f 61 64 4c 75 6d 69 6e |++){...L|oadLumin|
|00002560| 61 6e 63 65 73 28 64 65 | 76 69 63 65 0d 09 09 09 |ances(de|vice....|
|00002570| 2c 28 4c 75 6d 69 6e 61 | 6e 63 65 52 65 63 6f 72 |,(Lumina|nceRecor|
|00002580| 64 20 2a 29 28 64 6f 75 | 62 6c 65 54 61 62 6c 65 |d *)(dou|bleTable|
|00002590| 2b 28 69 25 74 50 65 72 | 69 6f 64 29 2a 28 32 35 |+(i%tPer|iod)*(25|
|000025a0| 36 2f 74 50 65 72 69 6f | 64 29 29 2c 30 2c 32 35 |6/tPerio|d)),0,25|
|000025b0| 35 29 3b 0d 09 09 47 65 | 74 56 6f 6c 74 61 67 65 |5);...Ge|tVoltage|
|000025c0| 28 31 2c 26 67 61 69 6e | 2c 26 66 72 65 71 75 65 |(1,&gain|,&freque|
|000025d0| 6e 63 79 2c 6e 2c 4e 55 | 4c 4c 29 3b 0d 09 09 76 |ncy,n,NU|LL);...v|
|000025e0| 5b 69 5d 3d 30 2e 30 3b | 0d 09 7d 0d 09 23 69 66 |[i]=0.0;|..}..#if|
|000025f0| 20 53 59 4d 41 4e 54 45 | 43 5f 43 5f 50 52 4f 46 | SYMANTE|C_C_PROF|
|00002600| 49 4c 45 0d 09 09 5f 70 | 72 6f 66 69 6c 65 3d 31 |ILE..._p|rofile=1|
|00002610| 3b 0d 09 23 65 6e 64 69 | 66 0d 09 66 6f 72 28 69 |;..#endi|f..for(i|
|00002620| 3d 30 3b 69 3c 74 50 65 | 72 69 6f 64 2a 34 3b 69 |=0;i<tPe|riod*4;i|
|00002630| 2b 2b 29 7b 0d 09 09 4c | 6f 61 64 4c 75 6d 69 6e |++){...L|oadLumin|
|00002640| 61 6e 63 65 73 28 64 65 | 76 69 63 65 0d 09 09 09 |ances(de|vice....|
|00002650| 2c 28 4c 75 6d 69 6e 61 | 6e 63 65 52 65 63 6f 72 |,(Lumina|nceRecor|
|00002660| 64 20 2a 29 28 64 6f 75 | 62 6c 65 54 61 62 6c 65 |d *)(dou|bleTable|
|00002670| 2b 28 69 25 74 50 65 72 | 69 6f 64 29 2a 28 32 35 |+(i%tPer|iod)*(25|
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+--------+-------------------------+-------------------------+--------+--------+