diff options
| -rw-r--r-- | doc/HISTORY | 2 | ||||
| -rw-r--r-- | generator/pamstereogram.c | 89 |
2 files changed, 63 insertions, 28 deletions
diff --git a/doc/HISTORY b/doc/HISTORY index 0e12a817..f80c0a3f 100644 --- a/doc/HISTORY +++ b/doc/HISTORY @@ -8,6 +8,8 @@ not yet BJH Release 10.94.00 Add pamhomography: Thanks Scott Pakin. + pamstereogram: Add -yfillshift . + pamtowinicon: Add BMP/PNG encoding to verbose output. libnetpbm: pm_system: Fix bug: standard input feeder process diff --git a/generator/pamstereogram.c b/generator/pamstereogram.c index 9b861b51..9f02b371 100644 --- a/generator/pamstereogram.c +++ b/generator/pamstereogram.c @@ -16,7 +16,7 @@ * * ---------------------------------------------------------------------- * - * Copyright (C) 2006-2020 Scott Pakin <scott+pbm@pakin.org> + * Copyright (C) 2006-2021 Scott Pakin <scott+pbm@pakin.org> * * All rights reserved. * @@ -85,6 +85,7 @@ struct cmdlineInfo { unsigned int magnifypat; /* -magnifypat option */ int xshift; /* -xshift option */ int yshift; /* -yshift option */ + int yfillshift; /* -yfillshift option */ const char * patfile; /* -patfile option. Null if none */ const char * texfile; /* -texfile option. Null if none */ const char * bgcolor; /* -bgcolor option */ @@ -153,8 +154,8 @@ parseCommandLine(int argc, unsigned int option_def_index; unsigned int patfileSpec, texfileSpec, dpiSpec, eyesepSpec, depthSpec, - guidesizeSpec, magnifypatSpec, xshiftSpec, yshiftSpec, - bgcolorSpec, smoothingSpec, planesSpec; + guidesizeSpec, magnifypatSpec, xshiftSpec, yshiftSpec, yfillshiftSpec, + bgcolorSpec, smoothingSpec, planesSpec; unsigned int blackandwhite, grayscale, color; const char ** planes; @@ -194,6 +195,8 @@ parseCommandLine(int argc, &xshiftSpec, 0); OPTENT3(0, "yshift", OPT_INT, &cmdlineP->yshift, &yshiftSpec, 0); + OPTENT3(0, "yfillshift", OPT_INT, &cmdlineP->yfillshift, + &yfillshiftSpec, 0); OPTENT3(0, "patfile", OPT_STRING, &cmdlineP->patfile, &patfileSpec, 0); OPTENT3(0, "texfile", OPT_STRING, &cmdlineP->texfile, @@ -282,9 +285,10 @@ parseCommandLine(int argc, if (!xshiftSpec) cmdlineP->xshift = 0; - if (!yshiftSpec) cmdlineP->yshift = 0; + if (!yfillshiftSpec) + cmdlineP->yfillshift = 0; if (xshiftSpec && !cmdlineP->patfile) pm_error("-xshift is valid only with -patfile"); @@ -1178,6 +1182,8 @@ static void makeImageRow(outGenerator * const outGenP, unsigned int const row, unsigned int const xbegin, + unsigned int const farWidth, + int const yfillshift, const unsigned int * const sameL, const unsigned int * const sameR, const tuple * const outRow) { @@ -1200,20 +1206,26 @@ makeImageRow(outGenerator * const outGenP, sameL[N] > N is not allowed. -----------------------------------------------------------------------------*/ - int col; + unsigned int const width = outGenP->pam.width; + unsigned int const height = outGenP->pam.height; + + unsigned int col; int lastLinked; - for (col = (int)xbegin, lastLinked = INT_MIN; - col < outGenP->pam.width; - ++col) { + for (col = xbegin, lastLinked = -1; col < width; ++col) { tuple newtuple; - if (sameL[col] == col || sameL[col] < (int)xbegin) { + if (sameL[col] == col || sameL[col] < xbegin) { if (lastLinked == col - 1) newtuple = outRow[col - 1]; - else - newtuple = outGenP->getTuple(outGenP, col, row); + else { + if (col < xbegin + farWidth) + newtuple = outGenP->getTuple(outGenP, col, row); + else + newtuple = outGenP->getTuple( + outGenP, col, (row + height - yfillshift) % height); + } } else { newtuple = outRow[sameL[col]]; lastLinked = col; @@ -1222,20 +1234,25 @@ makeImageRow(outGenerator * const outGenP, pnm_assigntuple(&outGenP->pam, outRow[col], newtuple); } - for (col = (int)xbegin - 1, lastLinked = INT_MIN; col >= 0; --col) { + for (col = xbegin, lastLinked = -1; col > 0; --col) { tuple newtuple; - if (sameR[col] == col) { - if (lastLinked == col + 1) - newtuple = outRow[col + 1]; - else - newtuple = outGenP->getTuple(outGenP, col, row); + if (sameR[col-1] == col) { + if (lastLinked == col) + newtuple = outRow[col]; + else { + if (col > xbegin - farWidth) + newtuple = outGenP->getTuple(outGenP, col-1, row); + else + newtuple = outGenP->getTuple( + outGenP, col-1, (row + height - yfillshift) % height); + } } else { - newtuple = outRow[sameR[col]]; - lastLinked = col; + newtuple = outRow[sameR[col-1]]; + lastLinked = col-1; /* Keep track of the last pixel to be constrained. */ } - pnm_assigntuple(&outGenP->pam, outRow[col], newtuple); + pnm_assigntuple(&outGenP->pam, outRow[col-1], newtuple); } } @@ -1261,6 +1278,8 @@ makeOneImageRow(unsigned int const row, const unsigned int * const sameR, unsigned int * const colNumBuffer, unsigned int const xbegin, + unsigned int const farWidth, + int const yfillshift, tuple * const rowBuffer, tuple * const outRow) { @@ -1272,7 +1291,7 @@ makeOneImageRow(unsigned int const row, rowBuffer, outRow); else makeImageRow(outputGeneratorP, row, - xbegin, sameL, sameR, outRow); + xbegin, farWidth, yfillshift, sameL, sameR, outRow); } } @@ -1284,6 +1303,8 @@ constructRowTileable(const struct pam * const inPamP, bool const makeMask, const unsigned int * const sameL, const unsigned int * const sameR, + unsigned int const farWidth, + int const yfillshift, unsigned int const row, tuple * const outRow, tuple * const outRowBuf1, @@ -1300,10 +1321,10 @@ constructRowTileable(const struct pam * const inPamP, xbegin=maximum case. */ makeOneImageRow(row, outputGeneratorP, makeMask, sameL, sameR, colNumBuf2, - 0, outRowBuf2, outRow); + farWidth, yfillshift, 0, outRowBuf2, outRow); makeOneImageRow(row, outputGeneratorP, makeMask, sameL, sameR, colNumBuf2, - inPamP->width - 1, outRowBuf2, outRowMax); + farWidth, yfillshift, inPamP->width - 1, outRowBuf2, outRowMax); for (col = 0; col < inPamP->width; ++col) { unsigned int plane; @@ -1362,6 +1383,8 @@ doRow(const struct pam * const inPamP, unsigned int const magnifypat, unsigned int const smoothing, unsigned int const xbegin, + unsigned int const farWidth, + int const yfillshift, unsigned int const row, tuple * const inRow, tuple * const outRowBuf0, @@ -1397,13 +1420,16 @@ doRow(const struct pam * const inPamP, /* Construct a single row. */ if (tileable) { constructRowTileable(inPamP, outputGeneratorP, makeMask, - sameL, sameR, row, outRow, + sameL, sameR, + farWidth, yfillshift, + row, outRow, outRowBuf1, outRowBuf2, colNumBuf2); } else { makeOneImageRow(row, outputGeneratorP, makeMask, sameL, sameR, colNumBuf2, - xbegin, outRowBuf1, outRow); + xbegin, farWidth, yfillshift, + outRowBuf1, outRow); } /* Write the resulting row. */ @@ -1423,7 +1449,8 @@ makeImageRows(const struct pam * const inPamP, bool const tileable, unsigned int const magnifypat, unsigned int const smoothing, - unsigned int const xbegin) { + unsigned int const xbegin, + int const yfillshift) { tuple * inRow; /* Buffer for use in reading from the height-map image */ tuple * outRowBuf0; /* Buffer for use in generating output rows */ @@ -1433,6 +1460,8 @@ makeImageRows(const struct pam * const inPamP, unsigned int * colNumBuf1; unsigned int * colNumBuf2; unsigned int row; /* Current row in the input and output files */ + unsigned int pixelEyesep; + unsigned int farWidth; inRow = pnm_allocpamrow(inPamP); outRowBuf0 = pnm_allocpamrow(&outputGeneratorP->pam); @@ -1451,10 +1480,13 @@ makeImageRows(const struct pam * const inPamP, pm_error("Unable to allocate space for %u column buffer", inPamP->width); + pixelEyesep = ROUNDU(eyesep * dpi); + farWidth = pixelEyesep/(magnifypat * 2); + for (row = 0; row < inPamP->height; ++row) { doRow(inPamP, outputGeneratorP, depthOfField, eyesep, dpi, crossEyed, makeMask, tileable, magnifypat, smoothing, xbegin, - row, + farWidth, yfillshift, row, inRow, outRowBuf0, outRowBuf1, outRowBuf2, colNumBuf0, colNumBuf1, colNumBuf2); } @@ -1510,7 +1542,8 @@ produceStereogram(FILE * const ifP, makeImageRows(&inPam, outputGeneratorP, cmdline.depth, cmdline.eyesep, cmdline.dpi, cmdline.crosseyed, cmdline.makemask, cmdline.tileable, - cmdline.magnifypat, cmdline.smoothing, xbegin); + cmdline.magnifypat, cmdline.smoothing, xbegin, + cmdline.yfillshift); if (cmdline.guidebottom) drawguides(cmdline.guidesize, &outputGeneratorP->pam, |