/*!
* \return Object read from file.
* \ingroup WlzExtFF
* \brief Reads a Woolz object from the given stream using the
* stereolithography stl surface file format. This format
* has surface definitions defined by a name and a collection
* of facet normals and loops. Each facet loop has the
* cooordinates of it's vertices.
* Only triangulated surface models can be read and all solids
* will be treated as one.
* \param fP Input file stream.
* \param dstErr Destination error number ptr, may be
* NULL.
*/
WlzObject *WlzEffReadObjStl(FILE *fP, WlzErrorNum *dstErr)
{
int vCnt = 0,
inSolid = 0,
inFacet = 0,
inLoop = 0;
char *sav,
*str,
*tok;
WlzDVertex3 vBuf[3];
WlzGMModel *model = NULL;
WlzObject *obj = NULL;
WlzDomain dom;
WlzValues val;
WlzErrorNum errNum = WLZ_ERR_NONE;
char buf[256];
dom.core = NULL;
val.core = NULL;
if(fP == NULL)
{
errNum = WLZ_ERR_PARAM_NULL;
}
else
{
model = WlzGMModelNew(WLZ_GMMOD_3D, 0, 0, &errNum);
}
/* Read just the first 5 bytes, these will contain the string "solid" if
* the STL file is ASCII or something else if binary. */
if(fread(buf, sizeof(char), 5, fP) != 5)
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
else
{
buf[5] = '\0';
if(strncmp(buf, "solid", 5) != 0) /* Binary not ASCII */
{
uint32_t tIdx,
nT = 0;
WlzGreyV tx = {0};
/* Discard the remaining 75 bytes of the 80 byte header block. */
(void )fread(buf, sizeof(char), 75, fP);
/* Read number of triangles. */
if(fread(buf, sizeof(char), 4, fP) != 4)
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
else
{
tx.bytes[0] = buf[0];
tx.bytes[1] = buf[1];
tx.bytes[2] = buf[2];
tx.bytes[3] = buf[3];
nT = (uint32_t)(tx.inv);
if(nT < 1)
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
for(tIdx = 0; (errNum == WLZ_ERR_NONE) && (tIdx < nT); ++tIdx)
{
if(fread(buf, sizeof(char), 50, fP) != 50)
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
else
{
int vIdx;
size_t bOff = 12;
for(vIdx = 0; vIdx < 3; ++vIdx)
{
tx.bytes[0] = buf[bOff++];
tx.bytes[1] = buf[bOff++];
tx.bytes[2] = buf[bOff++];
tx.bytes[3] = buf[bOff++];
vBuf[vIdx].vtX = tx.flv;
tx.bytes[0] = buf[bOff++];
tx.bytes[1] = buf[bOff++];
tx.bytes[2] = buf[bOff++];
tx.bytes[3] = buf[bOff++];
vBuf[vIdx].vtY = tx.flv;
tx.bytes[0] = buf[bOff++];
tx.bytes[1] = buf[bOff++];
tx.bytes[2] = buf[bOff++];
tx.bytes[3] = buf[bOff++];
vBuf[vIdx].vtZ = tx.flv;
}
errNum = WlzGMModelConstructSimplex3D(model, vBuf);
}
}
}
else /* ASCII not binary */
{
/* Discard rest of the first line. */
(void )WlzEffReadObjStlRec(fP, buf, 256);
/* Read and parse ACSII records. */
inSolid = 1;
while((errNum == WLZ_ERR_NONE) &&
((str = WlzEffReadObjStlRec(fP, buf, 256)) != NULL))
{
if((tok = ALC_STRTOK_R(str, " \t", &sav)) != NULL)
{
if(strncmp(tok, "solid", 5) == 0)
{
if(inSolid == 0)
{
inSolid = 1;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "facet", 5) == 0)
{
if((inSolid == 1) && (inFacet == 0))
{
inFacet = 1;
/* Normal vector is ignored. */
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "outer", 5) == 0)
{
if(((tok = ALC_STRTOK_R(NULL, " \t", &sav)) == NULL) ||
(strncmp(tok, "loop", 4) != 0) ||
(inSolid == 0) || (inFacet == 0) || (inLoop != 0))
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
else
{
vCnt = 0;
inLoop = 1;
}
}
else if(strncmp(tok, "vertex", 6) == 0)
{
char *pTok[3];
if((vCnt < 3) &&
((pTok[0] = ALC_STRTOK_R(NULL, " \t", &sav)) != NULL) &&
((pTok[1] = ALC_STRTOK_R(NULL, " \t", &sav)) != NULL) &&
((pTok[2] = ALC_STRTOK_R(NULL, " \t", &sav)) != NULL) &&
(sscanf(pTok[0], "%lg", &(vBuf[vCnt].vtX)) == 1) &&
(sscanf(pTok[1], "%lg", &(vBuf[vCnt].vtY)) == 1) &&
(sscanf(pTok[2], "%lg", &(vBuf[vCnt].vtZ)) == 1))
{
++vCnt;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "endloop", 7) == 0)
{
if(inLoop == 1)
{
inLoop = 0;
if(vCnt == 3)
{
errNum = WlzGMModelConstructSimplex3D(model, vBuf);
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "endfacet", 8) == 0)
{
if(inFacet == 1)
{
inFacet = 0;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "endsolid", 8) == 0)
{
if(inSolid == 1)
{
inSolid = 0;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
}
}
}
}
/* Create the Woolz object. */
if(errNum == WLZ_ERR_NONE)
{
if((dom.ctr = WlzMakeContour(&errNum)) != NULL)
{
dom.ctr->model = WlzAssignGMModel(model, NULL);
obj = WlzMakeMain(WLZ_CONTOUR, dom, val, NULL, NULL, &errNum);
}
}
if(errNum != WLZ_ERR_NONE)
{
if(obj != NULL)
{
(void )WlzFreeObj(obj);
}
else if(dom.ctr != NULL)
{
(void )WlzFreeContour(dom.ctr);
}
else
{
(void )WlzGMModelFree(model);
}
obj = NULL;
}
if(dstErr)
{
*dstErr = errNum;
}
return(obj);
}
/*!
* \return Object read from file.
* \ingroup WlzExtFF
* \brief Reads a Woolz object from the given stream using the
* stereolithography stl surface file format. This format
* has surface definitions defined by a name and a collection
* of facet normals and loops. Each facet loop has the
* cooordinates of it's vertices.
* Only triangulated surface models can be read and all solids
* will be treated as one.
* \param fP Input file stream.
* \param dstErr Destination error number ptr, may be
* NULL.
*/
WlzObject *WlzEffReadObjStl(FILE *fP, WlzErrorNum *dstErr)
{
int vCnt = 0,
inSolid = 0,
inFacet = 0,
inLoop = 0;
char *sav,
*str,
*tok;
WlzDVertex3 vBuf[3];
WlzGMModel *model = NULL;
WlzObject *obj = NULL;
WlzDomain dom;
WlzValues val;
WlzErrorNum errNum = WLZ_ERR_NONE;
char cBuf[256];
dom.core = NULL;
val.core = NULL;
if(fP == NULL)
{
errNum = WLZ_ERR_PARAM_NULL;
}
else
{
model = WlzGMModelNew(WLZ_GMMOD_3D, 0, 0, &errNum);
}
while((errNum == WLZ_ERR_NONE) &&
((str = WlzEffReadObjStlRec(fP, cBuf, 256)) != NULL))
{
if((tok = strtok_r(str, " \t", &sav)) != NULL)
{
if(strncmp(tok, "solid", 5) == 0)
{
if(inSolid == 0)
{
inSolid = 1;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "facet", 5) == 0)
{
if((inSolid == 1) && (inFacet == 0))
{
inFacet = 1;
/* Normal vector is ignored. */
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "outer", 5) == 0)
{
if(((tok = strtok_r(NULL, " \t", &sav)) == NULL) ||
(strncmp(tok, "loop", 4) != 0) ||
(inSolid == 0) || (inFacet == 0) || (inLoop != 0))
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
else
{
vCnt = 0;
inLoop = 1;
}
}
else if(strncmp(tok, "vertex", 6) == 0)
{
char *pTok[3];
if((vCnt < 3) &&
((pTok[0] = strtok_r(NULL, " \t", &sav)) != NULL) &&
((pTok[1] = strtok_r(NULL, " \t", &sav)) != NULL) &&
((pTok[2] = strtok_r(NULL, " \t", &sav)) != NULL) &&
(sscanf(pTok[0], "%lg", &(vBuf[vCnt].vtX)) == 1) &&
(sscanf(pTok[1], "%lg", &(vBuf[vCnt].vtY)) == 1) &&
(sscanf(pTok[2], "%lg", &(vBuf[vCnt].vtZ)) == 1))
{
++vCnt;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "endloop", 7) == 0)
{
if(inLoop == 1)
{
inLoop = 0;
if(vCnt == 3)
{
errNum = WlzGMModelConstructSimplex3D(model, vBuf);
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "endfacet", 8) == 0)
{
if(inFacet == 1)
{
inFacet = 0;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
else if(strncmp(tok, "endsolid", 8) == 0)
{
if(inSolid == 1)
{
inSolid = 0;
}
else
{
errNum = WLZ_ERR_READ_INCOMPLETE;
}
}
}
}
/* Create the Woolz object. */
if(errNum == WLZ_ERR_NONE)
{
if((dom.ctr = WlzMakeContour(&errNum)) != NULL)
{
dom.ctr->model = WlzAssignGMModel(model, NULL);
obj = WlzMakeMain(WLZ_CONTOUR, dom, val, NULL, NULL, &errNum);
}
}
if(errNum != WLZ_ERR_NONE)
{
if(obj != NULL)
{
(void )WlzFreeObj(obj);
}
else if(dom.ctr != NULL)
{
(void )WlzFreeContour(dom.ctr);
}
else
{
(void )WlzGMModelFree(model);
}
obj = NULL;
}
if(dstErr)
{
*dstErr = errNum;
}
return(obj);
}
int main(int argc, char **argv)
{
int idR,
nRec,
nFld,
option,
ok = 1,
usage = 0;
FILE *fP = NULL;
char *inFileStr,
*outObjFileStr;
double **bufD = NULL;
WlzGMModelType modelType = WLZ_GMMOD_2D;
WlzDVertex2 bufD2[2];
WlzDVertex3 bufD3[3];
WlzObject *outObj = NULL;
WlzDomain ctrDom;
WlzValues dumVal;
WlzGMModel *model = NULL;
WlzErrorNum errNum = WLZ_ERR_NONE;
const char *errMsgStr;
static char optList[] = "23diho:";
const char outObjFileStrDef[] = "-",
inFileStrDef[] = "-";
opterr = 0;
ctrDom.core = NULL;
dumVal.core = NULL;
outObjFileStr = (char *)outObjFileStrDef;
inFileStr = (char *)inFileStrDef;
while(ok && ((option = getopt(argc, argv, optList)) != -1))
{
switch(option)
{
case '2':
switch(modelType)
{
case WLZ_GMMOD_2I: /* FALLTHROUGH */
case WLZ_GMMOD_2D:
break;
case WLZ_GMMOD_3I:
modelType = WLZ_GMMOD_2I;
break;
case WLZ_GMMOD_3D:
modelType = WLZ_GMMOD_2D;
break;
default:
break;
}
break;
case '3':
switch(modelType)
{
case WLZ_GMMOD_2I:
modelType = WLZ_GMMOD_3I;
break;
case WLZ_GMMOD_2D:
modelType = WLZ_GMMOD_3D;
break;
case WLZ_GMMOD_3I: /* FALLTHROUGH */
case WLZ_GMMOD_3D:
break;
default:
break;
}
break;
case 'd':
switch(modelType)
{
case WLZ_GMMOD_2I:
modelType = WLZ_GMMOD_2D;
case WLZ_GMMOD_2D:
break;
case WLZ_GMMOD_3I:
modelType = WLZ_GMMOD_3D;
break;
case WLZ_GMMOD_3D:
break;
default:
break;
}
break;
case 'i':
switch(modelType)
{
case WLZ_GMMOD_2I:
break;
case WLZ_GMMOD_2D:
modelType = WLZ_GMMOD_2I;
break;
case WLZ_GMMOD_3I:
break;
case WLZ_GMMOD_3D:
modelType = WLZ_GMMOD_3I;
break;
default:
break;
}
break;
case 'h':
usage = 1;
ok = 0;
break;
case 'o':
outObjFileStr = optarg;
break;
default:
usage = 1;
ok = 0;
break;
}
}
if(ok)
{
if((inFileStr == NULL) || (*inFileStr == '\0') ||
(outObjFileStr == NULL) || (*outObjFileStr == '\0'))
{
ok = 0;
usage = 1;
}
if(ok && (optind < argc))
{
if((optind + 1) != argc)
{
usage = 1;
ok = 0;
}
else
{
inFileStr = *(argv + optind);
}
}
}
if(ok)
{
if((inFileStr == NULL) ||
(*inFileStr == '\0') ||
((fP = (strcmp(inFileStr, "-")?
fopen(inFileStr, "r"): stdin)) == NULL) ||
(AlcDouble2ReadAsci(fP, &bufD, (size_t *) &nRec, (size_t *) &nFld) != ALC_ER_NONE))
{
ok = 0;
(void )fprintf(stderr,
"%s: failed to read from file %s\n",
*argv, inFileStr);
}
if(fP && strcmp(inFileStr, "-"))
{
fclose(fP);
}
}
if(ok)
{
ctrDom.ctr = WlzMakeContour(&errNum);
if(errNum == WLZ_ERR_NONE)
{
ctrDom.ctr->model = model = WlzAssignGMModel(
WlzGMModelNew(modelType, 0, 0, &errNum), NULL);
}
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to make contour (%s).\n",
argv[0], errMsgStr);
}
}
if(ok)
{
switch(modelType)
{
case WLZ_GMMOD_2I: /* FALLTHROUGH */
case WLZ_GMMOD_2D:
if(nFld != 4)
{
ok = 0;
}
break;
case WLZ_GMMOD_3I: /* FALLTHROUGH */
case WLZ_GMMOD_3D:
if(nFld != 9)
{
ok = 0;
}
break;
default:
break;
}
if(ok == 0)
{
(void )fprintf(stderr,
"%s: Failed to read simplicies (syntax error).\n",
argv[0]);
}
}
if(ok)
{
idR = 0;
while((errNum == WLZ_ERR_NONE) && (idR < nRec))
{
switch(modelType)
{
case WLZ_GMMOD_2I: /* FALLTHROUGH */
case WLZ_GMMOD_2D:
bufD2[0].vtX = *(*(bufD + idR) + 0);
bufD2[0].vtY = *(*(bufD + idR) + 1);
bufD2[1].vtX = *(*(bufD + idR) + 2);
bufD2[1].vtY = *(*(bufD + idR) + 3);
errNum = WlzGMModelConstructSimplex2D(model, bufD2);
break;
case WLZ_GMMOD_3I: /* FALLTHROUGH */
case WLZ_GMMOD_3D:
bufD3[0].vtX = *(*(bufD + idR) + 0);
bufD3[0].vtY = *(*(bufD + idR) + 1);
bufD3[0].vtZ = *(*(bufD + idR) + 2);
bufD3[1].vtX = *(*(bufD + idR) + 3);
bufD3[1].vtY = *(*(bufD + idR) + 4);
bufD3[1].vtZ = *(*(bufD + idR) + 5);
bufD3[2].vtX = *(*(bufD + idR) + 6);
bufD3[2].vtY = *(*(bufD + idR) + 7);
bufD3[2].vtZ = *(*(bufD + idR) + 8);
errNum = WlzGMModelConstructSimplex3D(model, bufD3);
break;
default:
break;
}
++idR;
}
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to build model (%s).\n",
argv[0], errMsgStr);
}
}
if(ok)
{
if((fP = (strcmp(outObjFileStr, "-")?
fopen(outObjFileStr, "w"): stdout)) == NULL)
{
ok = 0;
(void )fprintf(stderr,
"%s: Failed to open output file %s.\n",
argv[0], outObjFileStr);
}
}
if(ok)
{
outObj = WlzMakeMain(WLZ_CONTOUR, ctrDom, dumVal, NULL, NULL, &errNum);
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to create output woolz object (%s).\n",
argv[0], errMsgStr);
}
}
if(ok)
{
errNum = WlzWriteObj(fP, outObj);
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to write output object (%s).\n",
argv[0], errMsgStr);
}
}
if(bufD)
{
(void )AlcDouble2Free(bufD);
}
if(outObj)
{
(void )WlzFreeObj(outObj);
}
else if(ctrDom.ctr)
{
(void )WlzFreeContour(ctrDom.ctr);
}
if(fP && strcmp(outObjFileStr, "-"))
{
(void )fclose(fP);
}
if(usage)
{
(void )fprintf(stderr,
"Usage: %s%s%s%sExample: %s%s",
*argv,
" [-o<output object>] [-h] [-2] [-3] [-d] [-i] [-o#] \n"
" [<input data>]\n"
"Version: ",
WlzVersion(),
"\n"
"Options:\n"
" -h Prints this usage information.\n"
" -o Output object file name.\n"
" -2 Build a 2D contour.\n"
" -3 Build a 3D contour.\n"
" -d Build a contour with double floating point geometry.\n"
" -i Build a contour with integer geometry.\n"
"Builds a contour from the given input simplicies.\n"
"The input data are read from stdin and the output object is written\n"
"to stdout unless filenames are given.\n",
*argv,
" -d -2 -o tri.wlz\n"
"0.0 0.0 1.0 0.0\n"
"1.0 0.0 0.5 0.866025\n"
"0.5 0.866025 0.0 0.0\n"
"<eof>\n"
"A 2D triangle is built from the three simplicies read from the\n"
"standard input and the contour is written to tri.wlz.\n");
}
return(!ok);
}
