?? avc_e00gen.c
字號(hào):
* This function should be called once with bCont=FALSE to get the * first E00 line for the current ARC, and then call with bCont=TRUE * to get all the other lines for this ARC. * * The function returns NULL when there are no more lines to generate * for this ARC. **********************************************************************/const char *AVCE00GenArc(AVCE00GenInfo *psInfo, AVCArc *psArc, GBool bCont){ if (bCont == FALSE) { /* Initialize the psInfo structure with info about the * current ARC. */ psInfo->iCurItem = 0; if (psInfo->nPrecision == AVC_DOUBLE_PREC) psInfo->numItems = psArc->numVertices; else psInfo->numItems = (psArc->numVertices+1)/2; /* And return the ARC header line */ sprintf(psInfo->pszBuf, "%10d%10d%10d%10d%10d%10d%10d", psArc->nArcId, psArc->nUserId, psArc->nFNode, psArc->nTNode, psArc->nLPoly, psArc->nRPoly, psArc->numVertices); } else if (psInfo->iCurItem < psInfo->numItems) { int iVertex; /* return the next set of vertices for the ARC. */ if (psInfo->nPrecision == AVC_DOUBLE_PREC) { iVertex = psInfo->iCurItem; psInfo->pszBuf[0] = '\0'; AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileARC, psArc->pasVertices[iVertex].x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileARC, psArc->pasVertices[iVertex].y); } else { iVertex = psInfo->iCurItem*2; psInfo->pszBuf[0] = '\0'; AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileARC, psArc->pasVertices[iVertex].x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileARC, psArc->pasVertices[iVertex].y); /* Check because if we have a odd number of vertices then * the last line contains only one pair of vertices. */ if (iVertex+1 < psArc->numVertices) { AVCPrintRealValue(psInfo->pszBuf,psInfo->nPrecision,AVCFileARC, psArc->pasVertices[iVertex+1].x); AVCPrintRealValue(psInfo->pszBuf,psInfo->nPrecision,AVCFileARC, psArc->pasVertices[iVertex+1].y); } } psInfo->iCurItem++; } else { /* No more lines to generate for this ARC. */ return NULL; } return psInfo->pszBuf;}/*===================================================================== PAL stuff =====================================================================*//********************************************************************** * AVCE00GenPal() * * Generate the next line of an E00 PAL (Polygon Arc List) entry. * * This function should be called once with bCont=FALSE to get the * first E00 line for the current PAL, and then call with bCont=TRUE * to get all the other lines for this PAL. * * The function returns NULL when there are no more lines to generate * for this PAL entry. **********************************************************************/const char *AVCE00GenPal(AVCE00GenInfo *psInfo, AVCPal *psPal, GBool bCont){ if (bCont == FALSE) { /* Initialize the psInfo structure with info about the * current PAL. (Number of lines excluding header) */ psInfo->numItems = (psPal->numArcs+1)/2; /* And return the PAL header line. */ sprintf(psInfo->pszBuf, "%10d", psPal->numArcs); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFilePAL, psPal->sMin.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFilePAL, psPal->sMin.y); /* Double precision PAL entries have their header on 2 lines! */ if (psInfo->nPrecision == AVC_DOUBLE_PREC) { psInfo->iCurItem = -1; /* Means 1 line left in header */ } else { AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFilePAL, psPal->sMax.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFilePAL, psPal->sMax.y); psInfo->iCurItem = 0; /* Next thing = first Arc entry */ } } else if (psInfo->iCurItem == -1) { /* Second (and last) header line for double precision coverages */ psInfo->pszBuf[0] = '\0'; AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFilePAL, psPal->sMax.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFilePAL, psPal->sMax.y); if ( psInfo->numItems == 0 ) { psInfo->iCurItem = -2; /* We have a 0-arc polygon, which needs an arc list with one "0 0 0" element */ } else { psInfo->iCurItem = 0; /* Next thing = first Arc entry */ } } else if (psInfo->iCurItem == -2) { sprintf(psInfo->pszBuf, "%10d%10d%10d", 0, 0, 0); psInfo->iCurItem = 0; /* Next thing = first Arc entry */ } else if (psInfo->iCurItem < psInfo->numItems) { /* Return PAL Arc entries... */ int iArc; iArc = psInfo->iCurItem*2; /* If we have a odd number of arcs then * the last line contains only one arc entry. */ if (iArc+1 < psPal->numArcs) { sprintf(psInfo->pszBuf, "%10d%10d%10d%10d%10d%10d", psPal->pasArcs[iArc].nArcId, psPal->pasArcs[iArc].nFNode, psPal->pasArcs[iArc].nAdjPoly, psPal->pasArcs[iArc+1].nArcId, psPal->pasArcs[iArc+1].nFNode, psPal->pasArcs[iArc+1].nAdjPoly); } else { sprintf(psInfo->pszBuf, "%10d%10d%10d", psPal->pasArcs[iArc].nArcId, psPal->pasArcs[iArc].nFNode, psPal->pasArcs[iArc].nAdjPoly); } psInfo->iCurItem++; } else { /* No more lines to generate for this PAL. */ return NULL; } return psInfo->pszBuf;}/*===================================================================== CNT stuff =====================================================================*//********************************************************************** * AVCE00GenCnt() * * Generate the next line of an E00 CNT (Polygon Centroid) entry. * * This function should be called once with bCont=FALSE to get the * first E00 line for the current CNT, and then call with bCont=TRUE * to get all the other lines for this CNT. * * The function returns NULL when there are no more lines to generate * for this CNT entry. **********************************************************************/const char *AVCE00GenCnt(AVCE00GenInfo *psInfo, AVCCnt *psCnt, GBool bCont){ if (bCont == FALSE) { /* Initialize the psInfo structure with info about the * current CNT. */ psInfo->iCurItem = 0; psInfo->numItems = (psCnt->numLabels+7)/8; /* And return the CNT header line. */ sprintf(psInfo->pszBuf, "%10d", psCnt->numLabels); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileCNT, psCnt->sCoord.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileCNT, psCnt->sCoord.y); } else if (psInfo->iCurItem < psInfo->numItems) { /* Return CNT Label Ids, 8 label Ids per line... */ int i, nFirstLabel, numLabels; nFirstLabel = psInfo->iCurItem * 8; numLabels = MIN(8, (psCnt->numLabels-nFirstLabel)); psInfo->pszBuf[0] = '\0'; for(i=0; i < numLabels; i++) { sprintf(psInfo->pszBuf + strlen(psInfo->pszBuf), "%10d", psCnt->panLabelIds[nFirstLabel+i] ); } psInfo->iCurItem++; } else { /* No more lines to generate for this CNT. */ return NULL; } return psInfo->pszBuf;}/*===================================================================== LAB stuff =====================================================================*//********************************************************************** * AVCE00GenLab() * * Generate the next line of an E00 LAB (Label) entry. * * This function should be called once with bCont=FALSE to get the * first E00 line for the current LAB, and then call with bCont=TRUE * to get all the other lines for this LAB. * * The function returns NULL when there are no more lines to generate * for this LAB entry. **********************************************************************/const char *AVCE00GenLab(AVCE00GenInfo *psInfo, AVCLab *psLab, GBool bCont){ if (bCont == FALSE) { /* Initialize the psInfo structure with info about the * current LAB. (numItems = Number of lines excluding header) */ psInfo->iCurItem = 0; if (psInfo->nPrecision == AVC_DOUBLE_PREC) psInfo->numItems = 2; else psInfo->numItems = 1; /* And return the LAB header line. */ sprintf(psInfo->pszBuf, "%10d%10d", psLab->nValue, psLab->nPolyId); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord1.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord1.y); } else if (psInfo->iCurItem < psInfo->numItems) { /* Return next Label coordinates... */ if (psInfo->nPrecision != AVC_DOUBLE_PREC) { /* Single precision, all on the same line */ psInfo->pszBuf[0] = '\0'; AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord2.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord2.y); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord3.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord3.y); } else if (psInfo->iCurItem == 0) { /* 2nd line, in a double precision coverage */ psInfo->pszBuf[0] = '\0'; AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord2.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord2.y); } else { /* 3rd line, in a double precision coverage */ psInfo->pszBuf[0] = '\0'; AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord3.x); AVCPrintRealValue(psInfo->pszBuf, psInfo->nPrecision, AVCFileLAB, psLab->sCoord3.y); } psInfo->iCurItem++; } else { /* No more lines to generate for this LAB. */ return NULL; } return psInfo->pszBuf;}/*===================================================================== TOL stuff =====================================================================*//********************************************************************** * AVCE00GenTol() * * Generate the next line of an E00 TOL (Tolerance) entry. * * This function should be called once with bCont=FALSE to get the * first E00 line for the current TOL, and then call with bCont=TRUE?? 快捷鍵說明
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