/*
	Include this file in your C/C++ source file if you intend
	to use GDI3D DLL

	Copyright: Pasi Paavola 1993
*/

#ifndef __GDI3D__
#define __GDI3D__

#ifndef _INC_WINDOWS
#include <windows.h>
#endif

#define G3CLASSNAME "g3wnd"

#ifdef __cplusplus
extern "C"
{
#endif

#ifdef __DLL__
extern HINSTANCE DLL_G_hInstance;
#define WINAPI_LIB WINAPI _export
#else /* ei DLL */
#define WINAPI_LIB WINAPI
#endif

/* Data types */

typedef struct tagG3POINT {
    double x, y, z;
    } G3POINT;

typedef G3POINT FAR * NPG3POINT;
typedef G3POINT FAR  * LPG3POINT;

typedef G3POINT   G3VECTOR;
typedef G3VECTOR NEAR * NPG3VECTOR;
typedef G3VECTOR FAR  * LPG3VECTOR;

typedef struct tagG3BOX { /* A box with all edges parallel with some axis */
    double x1, x2;        /* boundaries in x direction */
    double y1, y2;        /* boundaries in y direction */
    double z1, z2;        /* boundaries in x direction */
    } G3BOX;

typedef G3BOX NEAR * NPG3BOX;
typedef G3BOX FAR  * LPG3BOX;

typedef struct tagG3TRMAT { /* Transformation matrix, always applied from left */
    double M11, M12, M13, M14;  /* First row */
    double M21, M22, M23, M24;  /* Second row */
    double M31, M32, M33, M34;  /* Third row */
    } G3TRMAT;

typedef G3TRMAT NEAR * NPG3TRMAT;
typedef G3TRMAT FAR  * LPG3TRMAT;

typedef double (CALLBACK * LPFNWIRES) (double x, double y);

/* Functions */

int        WINAPI_LIB G3GetVersion();
int        WINAPI_LIB G3GetLastError(HWND hWnd);
HDC        WINAPI_LIB G3GetDC(HWND hWnd);
HANDLE     WINAPI_LIB G3ReleaseDC(HWND hWnd, HDC hDC);
DWORD      WINAPI_LIB G3MoveTo(LPG3POINT lpG3Point);
BOOL       WINAPI_LIB G3LineTo(LPG3POINT lpG3Point);
VOID       WINAPI_LIB G3Box(double x1, double x2, double y1, double y2,
                            double z1, double z2);
int        WINAPI_LIB G3SetViewpoint(LPG3POINT pPt);
VOID       WINAPI_LIB G3GetViewpoint(LPG3POINT pPt);
int        WINAPI_LIB G3G3ToViewport(LPG3POINT lpG3Points, LPPOINT lpVPPoints,
                                int nPoints);
int        WINAPI_LIB G3Histogram(double FAR *lpdHeights,
                                  COLORREF FAR * lpColors, int nItems,
                                  int nCategories, double dBarWidth,
                                  double dBarDepth, double dDist);

int        WINAPI_LIB G3WireSurface(LPFNWIRES lpfnF, double dMinX,
                       double dMaxX, double dMinY, double dMaxY,
                       int nXDivs, int nYDivs);

int        WINAPI_LIB G3SetViewport(int iCenterX, int iCenterY,
                        int iHalfWidth, int iHalfHeight);

int        WINAPI_LIB G3SetPicturePlaneParams(double dDist,
                        double dHalfWidth, double dHalfHeight);

VOID       WINAPI_LIB G3GetPicturePlaneParams(double FAR * LPdDist,
                       double FAR * LPdHalfWidth, double FAR * LPdHalfHeight);

int        WINAPI_LIB G3Polygon(LPG3POINT lpG3Points, int nPoints);
VOID       WINAPI_LIB G3RemoveTransformations(void);
VOID       WINAPI_LIB G3SetTranslation(double x, double y, double z);
VOID       WINAPI_LIB G3SetScale(double Scx, double Scy, double Scz);
LPG3VECTOR WINAPI_LIB G3Normalize(LPG3VECTOR lpG3Vector);
double     WINAPI_LIB G3VectorLength(LPG3VECTOR lpG3Vector);
VOID       WINAPI_LIB G3SetRotate(LPG3VECTOR lpRotAxis, double theta);

int        WINAPI_LIB Init3DWndClass(HINSTANCE hInst);

/* Error constants */

#define G3ERR_ERROR              -1
#define G3ERR_INVHANDLE          -3
#define G3ERR_INVPOINT           -4
#define G3ERR_GETDC              -5
#define G3ERR_MEM                -6
#define G3ERR_INVPAR             -7
#define G3ERR_POLYGON            -8
#define G3ERR_RELDC              -9
#define G3ERR_CREATEMETA         -10
#define G3ERR_CLOSEMETA          -11

/* Special G3 window styles */

#define GS_METAFILE              0x00000001L

/* Macros */

#define _PI (3.1415926535897932384626433832795028841971693993751)

#define G3DEG2RAD(x) ((_PI/180.0) * (x))

#ifdef __cplusplus
}
#endif

#endif // __GDI3D__