/*

    File:       Track.h

    Contains:   Interface file for Track.c

    Written by: Scott Kuechle, based on original Gerbils code by Brian Greenstone

    Copyright:  © 1998 by Apple Computer, Inc. All rights reserved

    Change History (most recent first)

        <1>     9/1/98      srk     first file

*/

#pragma once

/************************************************************

*                                                           *

*    INCLUDE FILES                                          *

*                                                           *

*************************************************************/

#if defined(_MSC_VER)

#include "WinPrefix.h"

#endif

#if TARGET_OS_WIN32

    #include <QTML.h>

    #define STRICT

    #include <windows.h>

#endif

#include <Resources.h>

#include <Math.h>

#include "QD3DMath.h"

#include "QD3DCamera.h"

#include "QD3DGeometry.h"

#include "QD3DGroup.h"

#include "QD3DView.h"

#include "Utils.h"

/************************************************************

*                                                           *

*    CONSTANTS                                              *

*                                                           *

*************************************************************/

#define kSkipAheadPoints    2

#define kMaxFacesInMesh     20

#define kTrackWidth         0.4F

#define kMaxSplinePoints    5000

#define DISTANCE_FROM_TRACK_TO_CAMERA       0.5F

#define LAZY_SUSAN_RADIUS                   /*50.0F*/38.0F

#define kPartType           'Part'

#define MAX_PARTS               100

#define MAX_SPLINE_NUBS         300L

#define MAX_SPLINE_POINTS       40000L

#define MAX_TRACK_SECTIONS      18

#if TARGET_OS_WIN32

    #define kPartDataFileName "TrackPartData.dat"

#endif

/************************************************************

*                                                           *

*    STRUCTURE DEFINITIONS                                  *

*                                                           *

*************************************************************/

        /* TRACK SECTION TYPE */

#if PRAGMA_STRUCT_ALIGN

    #pragma options align=mac68k

#elif PRAGMA_STRUCT_PACKPUSH

    #pragma pack(push, 1)

#elif PRAGMA_STRUCT_PACK

    #pragma pack(1)

#endif

    struct TrackSectionType

    {

        long        partNum;

        TQ3Point3D  nubCoord;

    };

    typedef struct TrackSectionType TrackSectionType;

    struct NubEntryType

    {

        TQ3Point3D      basePt;     /* base spline coord */

        TQ3Point3D      upPt;       /* point above base */

        long            sectionNum;     /* section # that this nub belongs to */

    };

    typedef struct NubEntryType NubEntryType;

    struct PartType

    {

        Byte            numNubs;

        NubEntryType    *coordsPtr;

    };

    typedef struct PartType PartType;

#if PRAGMA_STRUCT_ALIGN

    #pragma options align=reset

#elif PRAGMA_STRUCT_PACKPUSH

    #pragma pack(pop)

#elif PRAGMA_STRUCT_PACK

    #pragma pack()

#endif

/************************************************************

*                                                           *

*    FUNCTION PROTOTYPES                                    *

*                                                           *

*************************************************************/

void Track_MakeRandomTrack(TrackSectionType *trackSectionList,

                            long numTrackSections);

void Track_CreateMasterNubList(TrackSectionType *trackSectionList,

                                unsigned long       numTrackSections,

                                PartType            *partsList,

                                NubEntryType        *nubList,

                                long                *nubTotal);

#if TARGET_OS_MAC

    void Track_LoadPartsFromRez(PartType *partsList, short *partCount);

#else if TARGET_OS_WIN32

    void Track_LoadPartsFromFile(PartType *partsList, short *partCount);

#endif

void Track_BuildCoasterGeometry_Mesh(long           skipValue,

                                    TQ3GroupObject  theGroup,

                                    long            numSplinePoints,

                                    NubEntryType    *splinePointsPtr);

void Track_CalcSplineCurve(NubEntryType     **splinePoints,

                            long            maxSplinePoints,

                            NubEntryType    *nubPoints,

                            long            numSplineNubs,

                            long            *numSplinePoints,

                            float           subDivFactor);

void Track_MoveCamera(TQ3CameraObject   camera,

                    NubEntryType        *splinePtArray,

                    long                numSplinePoints,

                    long                *curTrackLocation);

void Track_GetForwardVector(long trackIndex, NubEntryType *splinePointsPtr, long numSplinePoints, TQ3Vector3D *theVector);

void Track_GetNormalVector(NubEntryType *splinePointsPtr, long trackIndex, TQ3Vector3D *theVector);