diff options
Diffstat (limited to 'editor/specialty')
| -rw-r--r-- | editor/specialty/pampaintspill.c | 32 | ||||
| -rw-r--r-- | editor/specialty/ppmshift.c | 124 | ||||
| -rw-r--r-- | editor/specialty/ppmspread.c | 206 |
3 files changed, 221 insertions, 141 deletions
diff --git a/editor/specialty/pampaintspill.c b/editor/specialty/pampaintspill.c index c7994723..5cd482d5 100644 --- a/editor/specialty/pampaintspill.c +++ b/editor/specialty/pampaintspill.c @@ -45,11 +45,11 @@ #include "mallocvar.h" #include "nstring.h" +#include "rand.h" #include "shhopt.h" #include "pam.h" #include "pammap.h" - static time_t const timeUpdateDelta = 30; /* Seconds between progress updates */ static int const minUpdates = 4; @@ -67,6 +67,8 @@ struct cmdlineInfo { unsigned int all; float power; unsigned int downsample; + unsigned int randomseedSpec; + unsigned int randomseed; }; struct coords { @@ -98,16 +100,18 @@ parseCommandLine(int argc, const char ** const argv, MALLOCARRAY_NOFAIL(option_def, 100); option_def_index = 0; /* Incremented by OPTENTRY */ - OPTENT3(0, "bgcolor", OPT_STRING, &cmdlineP->bgcolor, + OPTENT3(0, "bgcolor", OPT_STRING, &cmdlineP->bgcolor, &bgcolorSpec, 0); OPTENT3(0, "wrap", OPT_FLAG, NULL, &cmdlineP->wrap, 0); OPTENT3(0, "all", OPT_FLAG, NULL, &cmdlineP->all, 0); - OPTENT3(0, "power", OPT_FLOAT, &cmdlineP->power, + OPTENT3(0, "power", OPT_FLOAT, &cmdlineP->power, &powerSpec, 0); - OPTENT3(0, "downsample", OPT_UINT, &cmdlineP->downsample, + OPTENT3(0, "downsample", OPT_UINT, &cmdlineP->downsample, &downsampleSpec, 0); + OPTENT3(0, "randomseed", OPT_UINT, &cmdlineP->randomseed, + &cmdlineP->randomseedSpec, 0); opt.opt_table = option_def; opt.short_allowed = 0; @@ -223,7 +227,9 @@ locatePaintSources(struct pam * const pamP, tuple ** const tuples, tuple const bgColor, unsigned int const downsample, - struct paintSourceSet * const paintSourcesP) { + struct paintSourceSet * const paintSourcesP, + bool const randomseedSpec, + unsigned int const randomseed) { /*-------------------------------------------------------------------- Construct a list of all pixel coordinates in the input image that represent a non-background color. @@ -248,21 +254,24 @@ locatePaintSources(struct pam * const pamP, pm_message("Image contains %u background + %u non-background pixels", pamP->width * pamP->height - paintSources.size, paintSources.size); - + /* Reduce the number of paint sources to reduce execution time. */ if (downsample > 0 && downsample < paintSources.size) { + struct pm_randSt randSt; unsigned int i; - srand(pm_randseed()); + pm_randinit(&randSt); + pm_srand2(&randSt, randomseedSpec, randomseed); for (i = 0; i < downsample; ++i) { unsigned int const swapIdx = - i + rand() % (paintSources.size - i); + i + pm_rand(&randSt) % (paintSources.size - i); struct coords const swapVal = paintSources.list[i]; paintSources.list[i] = paintSources.list[swapIdx]; paintSources.list[swapIdx] = swapVal; } + pm_randterm(&randSt); paintSources.size = downsample; } @@ -426,7 +435,7 @@ produceOutputImage(struct pam * const pamP, for (row = 0; row < pamP->height; ++row) { struct coords target; double * newColor; - + MALLOCARRAY(newColor, pamP->depth); target.y = row; @@ -484,7 +493,8 @@ main(int argc, const char *argv[]) { pnm_colorname(&inPam, bgColor, PAM_COLORNAME_HEXOK)); locatePaintSources(&inPam, inTuples, bgColor, cmdline.downsample, - &paintSources); + &paintSources, + cmdline.randomseedSpec, cmdline.randomseed); produceOutputImage(&inPam, inTuples, bgColor, paintSources, distFunc, cmdline.power, cmdline.all, &outTuples); @@ -498,3 +508,5 @@ main(int argc, const char *argv[]) { return 0; } + + diff --git a/editor/specialty/ppmshift.c b/editor/specialty/ppmshift.c index cdb0f173..27cbb78c3 100644 --- a/editor/specialty/ppmshift.c +++ b/editor/specialty/ppmshift.c @@ -12,11 +12,11 @@ #include <stdbool.h> #include "mallocvar.h" +#include "rand.h" #include "shhopt.h" #include "ppm.h" - struct CmdlineInfo { /* All the information the user supplied in the command line, in a form easy for the program to use. @@ -24,6 +24,7 @@ struct CmdlineInfo { const char * inputFileName; unsigned int shift; + unsigned int seedSpec; unsigned int seed; }; @@ -42,8 +43,6 @@ parseCommandLine(int argc, const char ** const argv, unsigned int option_def_index; - unsigned int seedSpec; - MALLOCARRAY(option_def, 100); opt.opt_table = option_def; @@ -52,14 +51,11 @@ parseCommandLine(int argc, const char ** const argv, option_def_index = 0; /* incremented by OPTENT3 */ OPTENT3(0, "seed", OPT_UINT, &cmdlineP->seed, - &seedSpec, 0); + &cmdlineP->seedSpec, 0); pm_optParseOptions3(&argc, (char **)argv, opt, sizeof(opt), 0); /* Uses and sets argc, argv, and some of *cmdlineP and others. */ - if (!seedSpec) - cmdlineP->seed = pm_randseed(); - if (argc-1 < 1) pm_error("You must specify the shift factor as an argument"); else { @@ -84,6 +80,62 @@ parseCommandLine(int argc, const char ** const argv, +static void +shiftRow(pixel * const srcrow, + unsigned int const cols, + unsigned int const shift, + pixel * const destrow, + struct pm_randSt * const randStP) { + + /* the range by which a line is shifted lays in the range from */ + /* -shift/2 .. +shift/2 pixels; however, within this range it is */ + /* randomly chosen */ + + pixel * pP; + pixel * pP2; + int nowshift; + + if (shift != 0) + nowshift = (pm_rand(randStP) % (shift+1)) - ((shift+1) / 2); + else + nowshift = 0; + + pP = &srcrow[0]; + pP2 = &destrow[0]; + + /* if the shift value is less than zero, we take the original + pixel line and copy it into the destination line translated + to the left by x pixels. The empty pixels on the right end + of the destination line are filled up with the pixel that + is the right-most in the original pixel line. + */ + if (nowshift < 0) { + unsigned int col; + pP += abs(nowshift); + for (col = 0; col < cols; ++col) { + PPM_ASSIGN(*pP2, PPM_GETR(*pP), PPM_GETG(*pP), PPM_GETB(*pP)); + ++pP2; + if (col < (cols + nowshift) - 1) + ++pP; + } + } else { + unsigned int col; + /* The shift value is 0 or positive, so fill the first + <nowshift> pixels of the destination line with the + first pixel from the source line, and copy the rest of + the source line to the dest line + */ + for (col = 0; col < cols; ++col) { + PPM_ASSIGN(*pP2, PPM_GETR(*pP), PPM_GETG(*pP), PPM_GETB(*pP)); + ++pP2; + if (col >= nowshift) + ++pP; + } + } +} + + + int main(int argc, const char ** argv) { @@ -95,13 +147,15 @@ main(int argc, const char ** argv) { pixel * destrow; unsigned int row; unsigned int shift; + struct pm_randSt randSt; /* parse in 'default' parameters */ pm_proginit(&argc, argv); parseCommandLine(argc, argv, &cmdline); - srand(cmdline.seed); + pm_randinit(&randSt); + pm_srand2(&randSt, cmdline.seedSpec, cmdline.seed); ifP = pm_openr(cmdline.inputFileName); @@ -115,67 +169,23 @@ main(int argc, const char ** argv) { } else shift = cmdline.shift; - srcrow = ppm_allocrow(cols); - + srcrow = ppm_allocrow(cols); destrow = ppm_allocrow(cols); ppm_writeppminit(stdout, cols, rows, maxval, 0); - /** now do the shifting **/ - /* the range by which a line is shifted lays in the range from */ - /* -shift/2 .. +shift/2 pixels; however, within this range it is */ - /* randomly chosen */ for (row = 0; row < rows; ++row) { - pixel * pP; - pixel * pP2; - unsigned int nowshift; - - if (shift != 0) - nowshift = (rand() % (shift+1)) - ((shift+1) / 2); - else - nowshift = 0; - ppm_readppmrow(ifP, srcrow, cols, maxval, format); - pP = &srcrow[0]; - pP2 = &destrow[0]; - - /* if the shift value is less than zero, we take the original - pixel line and copy it into the destination line translated - to the left by x pixels. The empty pixels on the right end - of the destination line are filled up with the pixel that - is the right-most in the original pixel line. - */ - if (nowshift < 0) { - unsigned int col; - pP += abs(nowshift); - for (col = 0; col < cols; ++col) { - PPM_ASSIGN(*pP2, PPM_GETR(*pP), PPM_GETG(*pP), PPM_GETB(*pP)); - ++pP2; - if (col < (cols + nowshift) - 1) - ++pP; - } - } else { - unsigned int col; - /* The shift value is 0 or positive, so fill the first - <nowshift> pixels of the destination line with the - first pixel from the source line, and copy the rest of - the source line to the dest line - */ - for (col = 0; col < cols; ++col) { - PPM_ASSIGN(*pP2, PPM_GETR(*pP), PPM_GETG(*pP), PPM_GETB(*pP)); - ++pP2; - if (col >= nowshift) - ++pP; - } - } + shiftRow(srcrow, cols, shift, destrow, &randSt); ppm_writeppmrow(stdout, destrow, cols, maxval, 0); } - pm_close(ifP); - ppm_freerow(srcrow); ppm_freerow(destrow); + ppm_freerow(srcrow); + pm_close(ifP); + pm_randterm(&randSt); return 0; } diff --git a/editor/specialty/ppmspread.c b/editor/specialty/ppmspread.c index 6753f4fe..7b9558e3 100644 --- a/editor/specialty/ppmspread.c +++ b/editor/specialty/ppmspread.c @@ -10,102 +10,158 @@ #include <string.h> +#include "nstring.h" +#include "rand.h" +#include "shhopt.h" #include "ppm.h" +struct CmdlineInfo { + /* This structure represents all of the information the user + supplied in the command line but in a form that's easy for the + program to use. + */ + const char * inputFilename; /* '-' if stdin */ + unsigned int spread; + unsigned int randomseedSpec; + unsigned int randomseed; +}; + + + +static void +parseCommandLine(int argc, const char ** const argv, + struct CmdlineInfo * const cmdlineP ) { + + optEntry * option_def; + /* Instructions to OptParseOptions3 on how to parse our options */ + optStruct3 opt; + unsigned int option_def_index; + + MALLOCARRAY_NOFAIL(option_def, 100); + option_def_index = 0; /* Incremented by OPTENTRY */ + + OPTENT3(0, "randomseed", OPT_UINT, &cmdlineP->randomseed, + &cmdlineP->randomseedSpec, 0); + + opt.opt_table = option_def; + opt.short_allowed = 0; + opt.allowNegNum = 1; + + pm_optParseOptions3( &argc, (char **)argv, opt, sizeof(opt), 0 ); + + if (argc-1 < 1) + pm_error("You must specify the spread factor as an argument"); + else { + const char * error; + pm_string_to_uint(argv[1], &cmdlineP->spread, &error); + + if (error) + pm_error("Spread factor '%s' is not an unsigned integer. %s", + argv[1], error); + + if (argc-1 < 2) + cmdlineP->inputFilename = "-"; + else { + cmdlineP->inputFilename = argv[2]; + if (argc-1 >2) + pm_error("Too many arguments: %u. " + "The only possible arguments are " + "the spread factor and the optional input file name", + argc-1); + } + } +} + + + +static void +spreadRow(pixel ** const srcarray, + unsigned int const cols, + unsigned int const rows, + unsigned int const spread, + unsigned int const row, + pixel ** const destarray, + struct pm_randSt * const randStP) { + + unsigned int col; + + for (col = 0; col < cols; ++col) { + pixel const p = srcarray[row][col]; + + int const xdis = (pm_rand(randStP) % (spread + 1) ) + - ((spread + 1) / 2); + int const ydis = (pm_rand(randStP) % (spread + 1)) + - ((spread + 1) / 2); + + int const xnew = col + xdis; + int const ynew = row + ydis; + + /* only set the displaced pixel if it's within the bounds + of the image + */ + if (xnew >= 0 && xnew < cols && ynew >= 0 && ynew < rows) { + /* Displacing a pixel is accomplished by swapping it + with another pixel in its vicinity. + */ + pixel const p2 = srcarray[ynew][xnew]; + /* Original value of second pixel */ + + /* Set second pixel to new value */ + PPM_ASSIGN(destarray[ynew][xnew], + PPM_GETR(p), PPM_GETG(p), PPM_GETB(p)); + + /* Set first pixel to (old) value of second */ + PPM_ASSIGN(destarray[row][col], + PPM_GETR(p2), PPM_GETG(p2), PPM_GETB(p2)); + } else { + /* Displaced pixel is out of bounds; leave the old pixel there. + */ + PPM_ASSIGN(destarray[row][col], + PPM_GETR(p), PPM_GETG(p), PPM_GETB(p)); + } + } +} + + int -main(int argc, - char * argv[]) { +main(int argc, + const char * argv[]) { + struct CmdlineInfo cmdline; FILE * ifP; - int argn, rows, cols; + int rows, cols; unsigned int row; - pixel ** destarray, ** srcarray; - pixel * pP; - pixel * pP2; + pixel ** destarray; + pixel ** srcarray; pixval maxval; - pixval r1, g1, b1; - int amount; - const char * const usage = "amount [ppmfile]\n amount: # of pixels to displace a pixel by at most\n"; - - /* parse in 'default' parameters */ - ppm_init(&argc, argv); - - argn = 1; - - /* parse in amount & seed */ - if (argn == argc) - pm_usage(usage); - if (sscanf(argv[argn], "%d", &amount) != 1) - pm_usage(usage); - if (amount < 0) - pm_error("amount should be a positive number"); - ++argn; - - /* parse in filename (if present, stdin otherwise) */ - if (argn != argc) - { - ifP = pm_openr(argv[argn]); - ++argn; - } - else - ifP = stdin; + struct pm_randSt randSt; - if (argn != argc) - pm_usage(usage); + pm_proginit(&argc, argv); + + parseCommandLine(argc, argv, &cmdline); + + ifP = pm_openr(cmdline.inputFilename); srcarray = ppm_readppm(ifP, &cols, &rows, &maxval); destarray = ppm_allocarray(cols, rows); + pm_randinit(&randSt); + pm_srand2(&randSt, cmdline.randomseedSpec, cmdline.randomseed); + /* clear out the buffer */ for (row = 0; row < rows; ++row) memset(destarray[row], 0, cols * sizeof(pixel)); - srand(pm_randseed()); - - /* start displacing pixels */ + /* Displace pixels */ for (row = 0; row < rows; ++row) { - unsigned int col; - pP = &srcarray[row][0]; - - for (col = 0; col < cols; ++col) { - int const xdis = (rand() % (amount+1)) - ((amount+1) / 2); - int const ydis = (rand() % (amount+1)) - ((amount+1) / 2); + spreadRow(srcarray, cols, rows, cmdline.spread, row, + destarray, &randSt); - int const xnew = col + xdis; - int const ynew = row + ydis; - - /* only set the displaced pixel if it's within the bounds - of the image - */ - if (xnew >= 0 && xnew < cols && ynew >= 0 && ynew < rows) { - /* displacing a pixel is accomplished by swapping it - with another pixel in its vicinity - so, first - store other pixel's RGB - */ - pP2 = &srcarray[ynew][xnew]; - r1 = PPM_GETR(*pP2); - g1 = PPM_GETG(*pP2); - b1 = PPM_GETB(*pP2); - /* set second pixel to new value */ - pP2 = &destarray[ynew][xnew]; - PPM_ASSIGN(*pP2, PPM_GETR(*pP), PPM_GETG(*pP), PPM_GETB(*pP)); - - /* now, set first pixel to (old) value of second */ - pP2 = &destarray[row][col]; - PPM_ASSIGN(*pP2, r1, g1, b1); - } else { - /* displaced pixel is out of bounds; leave the old - pixel there - */ - pP2 = &destarray[row][col]; - PPM_ASSIGN(*pP2, PPM_GETR(*pP), PPM_GETG(*pP), PPM_GETB(*pP)); - } - ++pP; - } } + pm_randterm(&randSt); ppm_writeppm(stdout, destarray, cols, rows, maxval, 0); @@ -115,3 +171,5 @@ main(int argc, return 0; } + + |