/***************************************************************************** * Generic parser for the "Irit" solid modeller. * ****************************************************************************** * (C) Gershon Elber, Technion, Israel Institute of Technology * ****************************************************************************** * Written by: Gershon Elber Ver 0.2, Sep. 1991 * *****************************************************************************/ #ifndef IRIT_PRSR_H #define IRIT_PRSR_H #include #include "irit_sm.h" #include "cagd_lib.h" #include "trim_lib.h" #include "triv_lib.h" #include "genmat.h" /* Dont change the order of these objects (or there values as overloaded */ /* tables (see overload.c) are hardwired to it. If you add objects update */ /* that module properly. */ typedef enum { IP_OBJ_UNDEF = 0, IP_OBJ_POLY, /* These are the objects in overload.c. */ IP_OBJ_NUMERIC, IP_OBJ_POINT, IP_OBJ_VECTOR, IP_OBJ_PLANE, IP_OBJ_MATRIX, IP_OBJ_CURVE, IP_OBJ_SURFACE, IP_OBJ_STRING, IP_OBJ_LIST_OBJ, IP_OBJ_CTLPT, IP_OBJ_TRIMSRF, IP_OBJ_TRIVAR, ANY_OBJ = 100 /* Match any object type, in type checking. */ } IPObjStructType; typedef enum { /* Possible error code during data parsing. */ IP_NO_ERR = 0, IP_ERR_NUMBER_EXPECTED, IP_ERR_OPEN_PAREN_EXPECTED, IP_ERR_CLOSE_PAREN_EXPECTED, IP_ERR_LIST_COMP_UNDEF, IP_ERR_UNDEF_EXPR_HEADER, IP_ERR_PT_TYPE_EXPECTED, IP_ERR_OBJECT_EMPTY, IP_ERR_FILE_EMPTY, IP_ERR_MIXED_TYPES, IP_ERR_STR_NOT_IN_QUOTES, IP_ERR_OBJECT_EXPECTED, IP_ERR_CAGD_LIB_ERR, IP_ERR_TRIM_LIB_ERR, IP_ERR_TRIV_LIB_ERR, IP_ERR_STACK_OVERFLOW, IP_ERR_DEGEN_POLYGON, IP_ERR_DEGEN_NORMAL, IP_ERR_SOCKET_BROKEN, IP_ERR_SOCKET_TIME_OUT, IP_ERR_BIN_IN_TEXT, IP_ERR_BIN_UNDEF_OBJ, IP_WRN_OBJ_NAME_TRUNC = 100 } IritPrsrErrType; #define IP_LOAD_COLOR 14 /* Index color default - loaded objects. */ #define IRIT_DATA_HEADER(File, Name) \ fprintf(File, "Irit %s, %s,\nCreator: %s,\nDate: %s.\n\n", \ VERSION, COPYRIGHT, Name, IritRealTimeDate()); /***************************************************************************** * Global data structures: * * Objects in the system might be (real) scalars, (R3) vectors, matrices * * (4 by 4 - transformation matrix), strings of chars, lists of objects, or * * geometric objects. All but the last are simple and all their data is saved * * in the object space itself. The last (geometric) object points on a * * curve or a surface or a polygonal list of the form: * * * * Polygon -> Polygon -> Polygon -> Polygon -> .... -> NULL * * | | | | * * V V V V * * VList VList VList VList (VList = Vertex List) * * * * Each VList is usually a CIRCULAR vertex list. Each VList element * * (IPVertexStruct) implicitly defines an edge from this vertex, to the next. * * As each edge is used by exactly two polygons, a pointer to the other * * polygon using this edge exists in the IPVertexStruct as PAdj. Each polygon * * has also its Plane definition for fast processing, with its normal * * pointing INTO the object. * * Few other tags & flags are included in the data structures for different * * modules. * * Note, vertices are not shared by few VLists/Polygons although it may * * decrease memory usage (suprisingly, not much). The main reason to that is * * the basic assumption of this solid modeller, which is simplicity... * *****************************************************************************/ /***************************************************************************** * Vertex Type - holds single 3D point, including some attributes on it as * * Tags. The 3D coordinates are saved in Pt. Pointer to next in chain * * is Pnext, and the pointer to the adjacent polygon (to the edge defined by * * this Vertex and Vertex -> Pnext) is PAdj. * *****************************************************************************/ /* Internal edge, or edge generated by the polygon decomposition stage when */ /* only convex polygons are allowed. This edge was not in the input */ /* non-convex polygon, and therefore one may not want to see/display it. */ /* Note bits 4-7 (high nibble of Tags) are reserved for the different */ /* modules to perform their local tasks and so should not be used here. */ #define IP_VRTX_INTERNAL_TAG 0x01 /* Internal Tag - Edge is internal. */ #define IP_VRTX_NORMAL_TAG 0x02 /* Normal Tag - Vertex has normal. */ #define IP_IS_INTERNAL_VRTX(Vrtx) (Vrtx -> Tags & IP_VRTX_INTERNAL_TAG) #define IP_SET_INTERNAL_VRTX(Vrtx) (Vrtx -> Tags |= IP_VRTX_INTERNAL_TAG) #define IP_RST_INTERNAL_VRTX(Vrtx) (Vrtx -> Tags &= ~IP_VRTX_INTERNAL_TAG) #define IP_HAS_NORMAL_VRTX(Vrtx) (Vrtx -> Tags & IP_VRTX_NORMAL_TAG) #define IP_SET_NORMAL_VRTX(Vrtx) (Vrtx -> Tags |= IP_VRTX_NORMAL_TAG) #define IP_RST_NORMAL_VRTX(Vrtx) (Vrtx -> Tags &= ~IP_VRTX_NORMAL_TAG) typedef struct IPVertexStruct { struct IPVertexStruct *Pnext; /* To next in chain. */ struct IPAttributeStruct *Attrs; struct IPPolygonStruct *PAdj; /* To adjacent polygon. */ PointType Coord; /* Holds X, Y, Z coordinates. */ NormalType Normal; /* Hold Vertex normal into the solid. */ ByteType Count, Tags; /* Some attributes. */ } IPVertexStruct; /***************************************************************************** * Polygon Type - holds single polygon - Its Plane definition, and a pointer * * to its vertices contour list V. As for IPVertexStruct, different attributes* * can be saved in Tags. PAux can be used locally by different modules, for * * local usage only, and nothing sould be assumed on entry. * *****************************************************************************/ /* Note bits 4-7 (high nibble of Tags) are reserved for the different */ /* modules to perform their local tasks and so should not be used here. */ #define IP_POLY_CONVEX_TAG 0x01 /* Convex Tag - Set if is convex. */ #define IP_POLY_BBOX_TAG 0x02 /* BBox Tag - Set if BBox is computed. */ #define IP_POLY_PLANE_TAG 0x04 /* Plane Tag - set of has plane def. */ #define IP_IS_CONVEX_POLY(Poly) ((Poly) -> Tags & IP_POLY_CONVEX_TAG) #define IP_SET_CONVEX_POLY(Poly) ((Poly) -> Tags |= IP_POLY_CONVEX_TAG) #define IP_RST_CONVEX_POLY(Poly) ((Poly) -> Tags &= ~IP_POLY_CONVEX_TAG) #define IP_HAS_BBOX_POLY(Poly) ((Poly) -> Tags & IP_POLY_BBOX_TAG) #define IP_SET_BBOX_POLY(Poly) ((Poly) -> Tags |= IP_POLY_BBOX_TAG) #define IP_RST_BBOX_POLY(Poly) ((Poly) -> Tags &= ~IP_POLY_BBOX_TAG) #define IP_HAS_PLANE_POLY(Poly) ((Poly) -> Tags & IP_POLY_PLANE_TAG) #define IP_SET_PLANE_POLY(Poly) ((Poly) -> Tags |= IP_POLY_PLANE_TAG) #define IP_RST_PLANE_POLY(Poly) ((Poly) -> Tags &= ~IP_POLY_PLANE_TAG) typedef struct IPPolygonStruct { struct IPPolygonStruct *Pnext; /* To next in chain. */ struct IPAttributeStruct *Attrs; VoidPtr PAux; int IAux, IAux2; PlaneType Plane; /* Holds Plane as Ax + By + Cz + D. */ BBoxType BBox; /* BBox of polygons. */ IPVertexStruct *PVertex; /* To vertices list. */ ByteType Count, Tags; /* Some attributes. */ } IPPolygonStruct; /***************************************************************************** * Object Type - main system structure, which holds all the objects defined * * in the system like Numeric, Geometric etc. * * Note that as the number of objects will be usually extermely low (100 is * * high estimate!) we can waste some memory here... * *****************************************************************************/ #define IP_IS_UNDEF_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_UNDEF) #define IP_IS_POLY_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_POLY) #define IP_IS_NUM_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_NUMERIC) #define IP_IS_POINT_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_POINT) #define IP_IS_VEC_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_VECTOR) #define IP_IS_PLANE_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_PLANE) #define IP_IS_CTLPT_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_CTLPT) #define IP_IS_MAT_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_MATRIX) #define IP_IS_STR_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_STRING) #define IP_IS_OLST_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_LIST_OBJ) #define IP_IS_CRV_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_CURVE) #define IP_IS_SRF_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_SURFACE) #define IP_IS_TRIMSRF_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_TRIMSRF) #define IP_IS_TRIVAR_OBJ(Obj) ((Obj) -> ObjType == IP_OBJ_TRIVAR) #define IP_IS_GEOM_OBJ(Obj) (IP_IS_UNDEF_OBJ(Obj) || \ IP_IS_POLY_OBJ(Obj) || \ IP_IS_POINT_OBJ(Obj) || \ IP_IS_CTLPT_OBJ(Obj) || \ IP_IS_VEC_OBJ(Obj) || \ IP_IS_CRV_OBJ(Obj) || \ IP_IS_SRF_OBJ(Obj) || \ IP_IS_TRIMSRF_OBJ(Obj) || \ IP_IS_TRIVAR_OBJ(Obj)) #define IP_IS_FFGEOM_OBJ(Obj) (IP_IS_CRV_OBJ(Obj) || \ IP_IS_SRF_OBJ(Obj) || \ IP_IS_TRIMSRF_OBJ(Obj) || \ IP_IS_TRIVAR_OBJ(Obj)) #define IP_IS_POLYGON_OBJ(Obj) (((Obj) -> Tags & 0x03) == 0) #define IP_SET_POLYGON_OBJ(Obj) ((Obj) -> Tags = ((Obj) -> Tags & 0xfc)) #define IP_IS_POLYLINE_OBJ(Obj) (((Obj) -> Tags & 0x03) == 1) #define IP_SET_POLYLINE_OBJ(Obj) ((Obj) -> Tags = ((Obj) -> Tags & 0xfc) + 1) #define IP_IS_POINTLIST_OBJ(Obj) (((Obj) -> Tags & 0x03) == 2) #define IP_SET_POINTLIST_OBJ(Obj) ((Obj) -> Tags = ((Obj) -> Tags & 0xfc) + 2) /* Maximum size of object list to start with (reallocated dynamically). */ #define MAX_OBJ_LIST 10 typedef struct IPObjectStruct { struct IPObjectStruct *Pnext; /* To next in chain. */ struct IPAttributeStruct *Attrs; char Name[OBJ_NAME_LEN]; /* Name of object. */ IPObjStructType ObjType; /* Object Type: Numeric, Geometric, etc. */ ByteType Count; /* Count Number of references to this object. */ unsigned int Tags; /* Some attributes. */ union { IPPolygonStruct *Pl; /* Polygon/line list. */ CagdCrvStruct *Crvs; /* Free form curve(s). */ CagdSrfStruct *Srfs; /* Free form surface(s). */ TrimSrfStruct *TrimSrfs; /* Free form trimmed surface(s). */ TrivTVStruct *Trivars; /* Free form trivariate(s). */ RealType R; /* Numeric real data. */ PointType Pt; /* Numeric real point data. */ VectorType Vec; /* Numeric real vector data. */ PlaneType Plane; /* Numeric real plane data. */ CagdCtlPtStruct CtlPt; /* Control point data. */ MatrixType *Mat; /* Numeric 4 by 4 transformation matrix. */ struct { struct IPObjectStruct **PObjList; /* List of objects. */ int ListMaxLen; /* Maximum number of elements in list. */ } Lst; char *Str; /* General string for text object. */ VoidPtr *VPtr; } U; } IPObjectStruct; typedef void (*IritPrsrPrintFuncType)(char *); #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif int IritPrsrOpenDataFile(char *FileName, int Read, int Messages); int IritPrsrOpenStreamFromFile(FILE *f, int Read, int IsBinary, int IsPipe); int IritPrsrOpenStreamFromSocket(int Soc, int Read, int IsBinary); void IritPrsrCloseStream(int Handler, int Free); IPObjectStruct *IritPrsrGetDataFiles(char **DataFileNames, int NumOfDataFiles, int Messages, int MoreMessages); IPObjectStruct *IritPrsrGetObjects(int Handler); int IritPrsrSenseBinaryFile(char *FileName); IPObjectStruct *IritPrsrProcessReadObject(IPObjectStruct *PObj); IPObjectStruct *IritPrsrFlattenTree(IPObjectStruct *PObj); void IritPrsrStdoutObject(IPObjectStruct *PObj); void IritPrsrStderrObject(IPObjectStruct *PObj); void IritPrsrPutObjectToFile(FILE *f, IPObjectStruct *PObj); void IritPrsrPutObjectToHandler(int Handler, IPObjectStruct *PObj); int IritPrsrParseError(int LineNum, char **ErrorMsg); void IritPrsrPropagateAttrs(IPObjectStruct *PObj, IPAttributeStruct *Attrs); void IritPrsrInputUnGetC(int Handler, char c); int IritPrsrSetPolyListCirc(int Circ); int IritPrsrSetFlattenObjects(int Flatten); void IritPrsrSetReadOneObject(int OneObject); void IritPrsrSetPrintFunc(IritPrsrPrintFuncType PrintFunc); void IritPrsrFatalError(char *Msg); void IritPrsrSetFloatFormat(char *FloatFormat); int IritPrsrUpdatePolyPlane(IPPolygonStruct *PPoly); int IritPrsrUpdatePolyPlane2(IPPolygonStruct *PPoly, VectorType Vin); void IritPrsrUpdateVrtxNrml(IPPolygonStruct *PPoly, VectorType DefNrml); IPObjectStruct *IritPrsrReverseObjList(IPObjectStruct *PObj); IPPolygonStruct *IritPrsrReversePlList(IPPolygonStruct *PPl); void IritPrsrReverseVrtxList(IPPolygonStruct *Pl); IPVertexStruct *IritPrsrReverseVrtxList2(IPVertexStruct *PVrtx); IPPolygonStruct *IritPrsrMergePolylines(IPPolygonStruct *Polys); /* Binary stream functions. */ IPObjectStruct *IritPrsrGetBinObject(int Handler); void IritPrsrPutBinObject(int Handler, IPObjectStruct *PObj); /* Will be set to VIEW_MAT and PERS_MAT respectively if found in parsed data.*/ extern MatrixType IritPrsrViewMat, IritPrsrPrspMat; extern int IritPrsrWasViewMat, IritPrsrWasPrspMat; /* Gets lists of all freeform curves/(trimmed) surfaces/trivariates in the */ /* datafile, process them as needed. */ /* May return a processed version to be put on returned list from */ /* IritPrsrGetObjects (polygonal approximation of the free form data for */ /* example), or NULL otherwise. */ /* This function is responsible to free the freeform data given if not */ /* needed any more. */ /* Is function is a call back function that must be provided by the using */ /* application. A default function will just concat the data into one list. */ typedef struct IritPrsrFreeFormStruct { IPObjectStruct *CrvObjs; IPObjectStruct *SrfObjs; IPObjectStruct *TrimSrfObjs; IPObjectStruct *TrivarObjs; } IritPrsrFreeFormStruct; IPObjectStruct *IritPrsrProcessFreeForm(IritPrsrFreeFormStruct *FreeForms); IPObjectStruct *IritPrsrConcatFreeForm(IritPrsrFreeFormStruct *FreeForms); /* Convexity test for a polygon. */ int IritPrsrIsConvexPolygon(IPPolygonStruct *Pl); /* Last previous and other element retrieval routines. */ IPObjectStruct *IritPrsrGetLastObj(IPObjectStruct *OList); IPObjectStruct *IritPrsrGetPrevObj(IPObjectStruct *OList, IPObjectStruct *O); IPObjectStruct *IritPrsrAppendObjLists(IPObjectStruct *OList1, IPObjectStruct *OList2); IPPolygonStruct *IritPrsrGetLastPoly(IPPolygonStruct *PList); IPPolygonStruct *IritPrsrGetPrevPoly(IPPolygonStruct *PList, IPPolygonStruct *P); IPPolygonStruct *IritPrsrAppendPolyLists(IPPolygonStruct *PList1, IPPolygonStruct *PList2); IPVertexStruct *IritPrsrGetLastVrtx(IPVertexStruct *VList); IPVertexStruct *IritPrsrGetPrevVrtx(IPVertexStruct *VList, IPVertexStruct *V); IPVertexStruct *IritPrsrAppendVrtxLists(IPVertexStruct *VList1, IPVertexStruct *VList2); int IritPrsrObjListLen(IPObjectStruct *O); int IritPrsrPolyListLen(IPPolygonStruct *P); int IritPrsrVrtxListLen(IPVertexStruct *V); void IritPrsrForEachPoly(IPObjectStruct *OList, void (*CallBack) (IPPolygonStruct *)); void IritPrsrForEachVertex(IPObjectStruct *OList, void (*CallBack) (IPVertexStruct *)); /* Coercion of objects. */ CagdPointType IritPrsrCoerceCommonSpace(IPObjectStruct *PtObjList, int Type); CagdPointType IritPrsrCoercePtsListTo(IPObjectStruct *PtObjList, int Type); IPObjectStruct *IritPrsrCoerceObjectTo(IPObjectStruct *PObj, int NewType); /* Special objects' read and write functions. These functions are used to */ /* read and write objects of other libraries to and from data files. */ CagdCrvStruct *CagdCrvReadFromFile(char *FileName, char **ErrStr, int *ErrLine); CagdCrvStruct *CagdCrvReadFromFile2(int Handler, char **ErrStr, int *ErrLine); int CagdCrvWriteToFile(CagdCrvStruct *Crvs, char *FileName, int Indent, char *Comment, char **ErrStr); int CagdCrvWriteToFile2(CagdCrvStruct *Crvs, int Handler, int Indent, char *Comment, char **ErrStr); int CagdCrvWriteToFile3(CagdCrvStruct *Crvs, FILE *f, int Indent, char *Comment, char **ErrStr); CagdSrfStruct *CagdSrfReadFromFile(char *FileName, char **ErrStr, int *ErrLine); CagdSrfStruct *CagdSrfReadFromFile2(int Handler, char **ErrStr, int *ErrLine); int CagdSrfWriteToFile(CagdSrfStruct *Srfs, char *FileName, int Indent, char *Comment, char **ErrStr); int CagdSrfWriteToFile2(CagdSrfStruct *Srfs, int Handler, int Indent, char *Comment, char **ErrStr); int CagdSrfWriteToFile3(CagdSrfStruct *Srfs, FILE *f, int Indent, char *Comment, char **ErrStr); CagdCrvStruct *BzrCrvReadFromFile(char *FileName, char **ErrStr, int *ErrLine); CagdCrvStruct *BzrCrvReadFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); int BzrCrvWriteToFile(CagdCrvStruct *Crvs, char *FileName, int Indent, char *Comment, char **ErrStr); int BzrCrvWriteToFile2(CagdCrvStruct *Crvs, int Handler, int Indent, char *Comment, char **ErrStr); CagdSrfStruct *BzrSrfReadFromFile(char *FileName, char **ErrStr, int *ErrLine); CagdSrfStruct *BzrSrfReadFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); int BzrSrfWriteToFile(CagdSrfStruct *Srfs, char *FileName, int Indent, char *Comment, char **ErrStr); int BzrSrfWriteToFile2(CagdSrfStruct *Srfs, int Handler, int Indent, char *Comment, char **ErrStr); CagdCrvStruct *BspCrvReadFromFile(char *FileName, char **ErrStr, int *ErrLine); CagdCrvStruct *BspCrvReadFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); int BspCrvWriteToFile(CagdCrvStruct *Crvs, char *FileName, int Indent, char *Comment, char **ErrStr); int BspCrvWriteToFile2(CagdCrvStruct *Crvs, int Handler, int Indent, char *Comment, char **ErrStr); CagdSrfStruct *BspSrfReadFromFile(char *FileName, char **ErrStr, int *ErrLine); CagdSrfStruct *BspSrfReadFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); int BspSrfWriteToFile(CagdSrfStruct *Srfs, char *FileName, int Indent, char *Comment, char **ErrStr); int BspSrfWriteToFile2(CagdSrfStruct *Srfs, int Handler, int Indent, char *Comment, char **ErrStr); TrivTVStruct *TrivTVReadFromFile(char *FileName, char **ErrStr, int *ErrLine); TrivTVStruct *TrivTVReadFromFile2(int Handler, char **ErrStr, int *ErrLine); TrivTVStruct *TrivBzrTVReadFromFile(char *FileName, char **ErrStr, int *ErrLine); TrivTVStruct *TrivBzrTVReadFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); TrivTVStruct *TrivBspTVReadFromFile(char *FileName, char **ErrStr, int *ErrLine); TrivTVStruct *TrivBspTVReadFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); int TrivTVWriteToFile(TrivTVStruct *TVs, char *FileName, int Indent, char *Comment, char **ErrStr); int TrivTVWriteToFile2(TrivTVStruct *TVs, int Handler, int Indent, char *Comment, char **ErrStr); int TrivTVWriteToFile3(TrivTVStruct *TVs, FILE *f, int Indent, char *Comment, char **ErrStr); int TrivBzrTVWriteToFile(TrivTVStruct *TVs, char *FileName, int Indent, char *Comment, char **ErrStr); int TrivBzrTVWriteToFile2(TrivTVStruct *TVs, int Handler, int Indent, char *Comment, char **ErrStr); int TrivBspTVWriteToFile(TrivTVStruct *TVs, char *FileName, int Indent, char *Comment, char **ErrStr); int TrivBspTVWriteToFile2(TrivTVStruct *TVs, int Handler, int Indent, char *Comment, char **ErrStr); TrimSrfStruct *TrimReadTrimmedSrfFromFile(char *FileName, char **ErrStr, int *ErrLine); TrimSrfStruct *TrimReadTrimmedSrfFromFile2(int Handler, CagdBType NameWasRead, char **ErrStr, int *ErrLine); int TrimWriteTrimmedSrfToFile(TrimSrfStruct *TrimSrfs, char *FileName, int Indent, char *Comment, char **ErrStr); int TrimWriteTrimmedSrfToFile2(TrimSrfStruct *TrimSrfs, int Handler, int Indent, char *Comment, char **ErrStr); int TrimWriteTrimmedSrfToFile3(TrimSrfStruct *TrimSrfs, FILE *f, int Indent, char *Comment, char **ErrStr); #ifdef DEBUG void IritPrsrDbg(void); #endif /* DEBUG */ #if defined(__cplusplus) || defined(c_plusplus) } #endif #endif /* IRIT_PRSR_H */