开放源码实体模型建模分析工具包V9.5

/****************************************************************************** * Irtprscc.c - Provide a routine to compress Irit objects. * * Reference paper: "Coding of 3D virtual objects with NURBS" * ******************************************************************************* * (C) Gershon Elber, Technion, Israel Institute of Technology * ******************************************************************************* * Written by Yura Zharkovsky 2003 * ******************************************************************************/ #include <stdio.h> #include <math.h> #ifdef IPC_BIN_COMPRESSION #ifdef __WINNT__ #include <io.h> #include <direct.h> #endif /* __WINNT__ */ #include "irit_sm.h" #include "prsr_loc.h" #include "cagd_lib.h" #include "obj_dpnd.h" #include "allocate.h" #include "geom_lib.h" #include "misc_lib.h" /* Minimum buffer, used in Test mode. */ #define IPC_TEST_BUFF_SIZE IPC_INPUT_BUFFER_LEN #define IPC_TEST_COMP_SIZE (int)(IPC_INPUT_BUFFER_LEN * 1.1) #define IPC_TEST_PREDICTOR_FAVOR(x) (x = (long)((double)x * 0.9)) #define IPC_BUFF_SIZE 100*1024 /* Used in order to free allocated buffers when compression ends. */ #define IPC_TEST_FREE_BUFFERS (-1) /* Test mode constants, used in order to specify current test state. */ typedef enum { IPC_TEST_ON, IPC_TEST_OFF, IPC_TEST_SIZE, IPC_TEST_RUNNING } IpcTestMode; /* Global variable indicate that Test mode for predictors is on/off. */ STATIC_DATA IpcTestMode _IpcGlobalTestMode = IPC_TEST_OFF; /* Global set of angles, used for angle predictor. */ CagdRType _IpcAnglesCos[IPC_ANGLES_SET_AUX][IPC_ANGLES_MAX] = { {0.0, 1.0}, {-0.5, -1.0, -0.5, 1.0, 1.0, 1.0} }; int _IpcAnglesNum[IPC_ANGLES_SET_AUX] = { 2, 6 }; /* private declarations of predictors. */ static void IpcPredictPointsSrf(CagdRType *QntPoints[], IpcCtlPtStruct *Errs, CagdSrfStruct *Srf, IpcArgs *Args); static void IpcPredictPointsAnglesSrf(CagdRType *QntPoints[], IpcCtlPtStruct *Errs, CagdSrfStruct *Srf, IpcArgs *Args); static void IpcPredictPointsUniform(IpcCtlPtStruct *PtDiffs, CagdRType *Points[], int NumPoints, IpcArgs *Args); static void IpcPredictPointsMultiVar(MvarMVStruct *MV, IpcCtlPtStruct *PtDiffs, float QntError); static void IpcPredictPointsTrivTV(CagdRType *QntPoints[], IpcCtlPtStruct *PtDiffs, TrivTVStruct *TV, float QntError); static void IpcPredictPoints2D(IpcCtlPtStruct *PtDiffs, CagdRType *Points[], int NumPoints, IpcArgs *Args); static void IpcPredictPointsArc(IpcCtlPtStruct *PtDiffs, CagdRType *Points[], int NumPoints, IpcArgs *Args); static ByteType IpcPredictPointsAnglesAux(IpcCtlPtStruct *Errs, CagdRType *QPts[], CagdRType *Pts[], int Block, int BlockLen, IpcArgs *Args); static void IpcArcFindCenterAndRadius(RealType *R2, PointType Pt0, PointType Pt1, PointType Pt2, PointType Pt3); static void IpcPredictPointsSetAngles(IpcCtlPtStruct *Errs, CagdRType *Points[], int NumPoints); static void IpcPredictWeightsUniform(IpcCtlPtStruct *Errs, CagdRType *Weights, IpcArgs *Args); static void IpcCompressObjAux(IpcFile *f, IPObjectStruct *PObj, IpcArgs *Args); static void IpcCompressObjAux1(IpcFile *f, IPObjectStruct *PObj, ByteType ObjMap, IpcArgs *Args); static int IpcCompressObj2(IpcFile *f, IPObjectStruct *PObj, float QntError); static ByteType IpcSetArgumentsObj(IpcFile *f, IPObjectStruct *PObj, ByteType ObjMap, IpcArgs *Args); static IpcPredictorType IpcSetArgumentsCrv(IpcFile *f, IPObjectStruct *PObj, ByteType ObjMap, IpcArgs *Args); static IpcPredictorType IpcSetArgumentsSrf(IpcFile *f, IPObjectStruct *PObj, ByteType ObjMap, IpcArgs *Args); static int IpcCompressTestAux(IpcTestMode Mode, void *Data, long DataLen); static int IpcCompressMode(void); static char* IpcGetMapFileName(FILE *f); static void _IpcFileToStream(char *MapFileName, FILE *Stream); static void IpcCompressContinue(IpcFile *f, ByteType StreamContinue); static void IpcCompressDynamicObj(IpcFile *f, IPObjectStruct *PObj, ByteType Map, IpcArgs *Args); static void IpcCompressDependencies(IpcFile *f, IPODObjectDpndncyStruct *Dpnds, IpcArgs *Args); static void IpcCompressAttributes(IpcFile *f, IPAttributeStruct *Attr, IpcArgs *Args); static int IpcCompressUnion(IpcFile *f, IPObjectStruct *PObj, IpcArgs *Args); static void IpcCompressSrf(IpcFile *f, CagdSrfStruct *Srfs, IpcArgs *Args); static void IpcCompressTrimSrf(IpcFile *f, TrimSrfStruct *TrimSrfs, IpcArgs *Args); static void IpcCompressTrimCrvList(IpcFile *f, TrimCrvStruct *Crvs, IpcArgs *Args); static void IpcCompressTrimCrvSegList(IpcFile *f, TrimCrvSegStruct *TrimCrvSegs, IpcArgs *Args); static void IpcCompressCrvs(IpcFile *f, CagdCrvStruct *Crvs, IpcArgs *Args); static void IpcCompressCtlPt(IpcFile *f, CagdCtlPtStruct *CtlPt, IpcArgs *Args); static void IpcCompressKV(IpcFile *f, IpcKnotVectorStruct *KV, float QntError); static void IpcCompressPoints(IpcFile *f, IpcCtlPtStruct *Points, float QntError); static void IpcCompressPointsAngles(IpcFile *f, IpcCtlPtStruct *Points, float QntError); static void IpcCompressString(IpcFile *f, char *String); static void IpcCompressStrings(IpcFile *f, IpcStrings *Strings); static int IpcCompressAsByte(IpcFile *f, void *Data, long DataLen); static int IpcCompressDoubleAsInt(IpcFile *f, void *Data, long DataLen); static int IpcCompress(IpcFile *f, void *Data, long DataLen); static int IpcCompressAux(IpcFile *f, ByteType *Buffer, long Size); static long IpcCompressTest(IpcTestMode Mode); static void IpcCompressTriSrfs(IpcFile *f, TrngTriangSrfStruct *TriSrfs, IpcArgs *Args); static void IpcCompressInstances(IpcFile *f, IPInstanceStruct *Instances, IpcArgs *Args); static void IpcCompressMultiVar(IpcFile *f, MvarMVStruct *MVs, IpcArgs *Args); static void IpcCompressTrivTV(IpcFile *f, TrivTVStruct *TVs, IpcArgs *Args); static void IpcCompressPolygons(IpcFile *f, IPPolygonStruct *Pl, IpcArgs *Args); static void IpcCompressVertex(IpcFile *f, IPVertexStruct *PVertex, int IsSame, IpcArgs *Args); static void IpcCompressPointFloat(IpcFile *f, PointType *Pt, IpcArgs *Args); static void IpcCompressModels(IpcFile *f, MdlModelStruct *Mdls, IpcArgs *Args); static void IpcCompressTrimSrfList(IpcFile *f, MdlTrimSrfStruct *TrimSrfList, IpcArgs *Args); static void IpcCompressLoopList(IpcFile *f, MdlLoopStruct *LoopList, IpcArgs *Args); static void IpcCompressTrimSegList(IpcFile *f, MdlTrimSegStruct *TrimSegs, IpcArgs *Args); static void IpcEncodeTriSrf(TrngTriangSrfStruct *TriSrf, Ipc