#pragma once

#ifndef TGL_INCLUDED

#define TGL_INCLUDED

//#include "tgeometry.h"

#include "tmachine.h"

#ifdef _WIN32

#include <windows.h></windows.h>

#include <cstdlib></cstdlib>

#include <gl gl.h=""></gl>

#include <gl glu.h=""></gl>

#include <gl glut.h=""></gl>

#endif

#ifdef MACOSX

#include <glut glut.h=""></glut>

#define GLUT_NO_LIB_PRAGMA

#define GLUT_NO_WARNING_DISABLE

#endif

#if defined(LINUX) || defined(FREEBSD)

#include <gl gl.h=""></gl>

#include <gl glu.h=""></gl>

#include <gl glut.h=""></gl>

#endif

//#include "tcurves.h"

#include "traster.h"

//#include "tfilepath.h"

class TFilePath;

class TCubic;

#undef DVAPI

#undef DVVAR

#ifdef DV_LOCAL_DEFINED

#define DVAPI

#define DVVAR

#else

#ifdef TGL_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

#endif

#if defined(TNZ_MACHINE_CHANNEL_ORDER_BGRM)

#define TGL_FMT GL_BGRA_EXT

#elif defined(TNZ_MACHINE_CHANNEL_ORDER_MBGR)

#define TGL_FMt GL_ABGR_EXT

#elif defined(TNZ_MACHINE_CHANNEL_ORDER_RGBM)

#define TGL_FMT GL_RGBA

#elif defined(TNZ_MACHINE_CHANNEL_ORDER_MRGB)

#define TGL_FMT GL_BGRA

#else

@undefined chan order

#endif

#ifdef TNZ_MACHINE_CHANNEL_ORDER_MRGB

#define TGL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV

#else

#define TGL_TYPE GL_UNSIGNED_BYTE

#endif

//=============================================================================

#ifdef _DEBUG

#define CHECK_ERRORS_BY_GL                                                     \

  {                                                                            \

    GLenum glErr = glGetError();                                               \

    assert(glErr != GL_INVALID_ENUM);                                          \

    assert(glErr != GL_INVALID_VALUE);                                         \

    assert(glErr != GL_INVALID_OPERATION);                                     \

    assert(glErr != GL_STACK_OVERFLOW);                                        \

    assert(glErr != GL_STACK_UNDERFLOW);                                       \

    assert(glErr != GL_OUT_OF_MEMORY);                                         \

  }

#else

#define CHECK_ERRORS_BY_GL ;

#endif

//=============================================================================

// forward declarations

class TStroke;

class TVectorImage;

class TVectorRenderData;

//=============================================================================

//! Extension to set a vertex

inline void tglVertex(const TPointD &p) { glVertex2d(p.x, p.y); }

inline void tglVertex(const TPoint &p) { glVertex2i(p.x, p.y); }

//! Extension to set a color

inline void tglColor(const TPixel &p) { glColor4ub(p.r, p.g, p.b, p.m); }

inline void tglColor(const TPixelD &p) { glColor4d(p.r, p.g, p.b, p.m); }

//! retrieve the square of pixel size from current GL_MODELVIEW matrix

DVAPI double tglGetPixelSize2();

//! Draw text in string s at position p.

DVAPI void tglDrawText(const TPointD &p, const std::string &s,

                       void *font = GLUT_STROKE_ROMAN);

DVAPI void tglDrawText(const TPointD &p, const std::wstring &s,

                       void *font = GLUT_STROKE_ROMAN);

//! Returns text width

DVAPI double tglGetTextWidth(const std::string &s,

                             void *font = GLUT_STROKE_ROMAN);

/*!

 Draw circle of radius r with center c.

 Remark: it is possible set number of slices

 */

DVAPI void tglDrawCircle(const TPointD &c, double r);

/*!

 Draw circle of radius r with center c.

 Remark: it is possible set number of slices

 */

DVAPI void tglDrawDisk(const TPointD &c, double r);

/*!

 Draw a segment.

 */

DVAPI void tglDrawSegment(const TPointD &p1, const TPointD &p2);

inline void tglDrawSegment(const TPoint &p1, const TPoint &p2) {

  tglDrawSegment(convert(p1), convert(p2));

}

inline void tglDrawSegment(double x0, double y0, double x1, double y1) {

  tglDrawSegment(TPointD(x0, y0), TPointD(x1, y1));

}

// inline  void  glDrawSegment(const TSegment& s){

//  glDrawSegment( s.getP0(), s.getP1() );

//}

/*!

 Draw a rect.

 */

DVAPI void tglDrawRect(const TRectD &rect);

inline void tglDrawRect(const TRect &rect) { tglDrawRect(convert(rect)); }

inline void tglDrawRect(double x0, double y0, double x1, double y1) {

  tglDrawRect(TRectD(x0, y0, x1, y1));

}

/*!

 Fill a rect.

 */

DVAPI void tglFillRect(const TRectD &rect);

inline void tglFillRect(const TRect &rect) { tglFillRect(convert(rect)); }

inline void tglFillRect(double x0, double y0, double x1, double y1) {

  tglFillRect(TRectD(x0, y0, x1, y1));

}

inline void tglMultMatrix(const TAffine &aff) {

  GLdouble m[] = {aff.a11, aff.a21, 0, 0, aff.a12, aff.a22, 0, 0,

                  0,       0,       1, 0, aff.a13, aff.a23, 0, 1};

  glMultMatrixd(m);

}

//=============================================================================

void DVAPI tglRgbOnlyColorMask();

void DVAPI tglAlphaOnlyColorMask();

void DVAPI tglEnableBlending(GLenum src = GL_SRC_ALPHA,

                             GLenum dst = GL_ONE_MINUS_SRC_ALPHA);

void DVAPI tglEnableLineSmooth(bool enable = true, double lineSize = 1.0);

void DVAPI tglEnablePointSmooth(double pointSize = 1.0);

void DVAPI tglGetColorMask(GLboolean &red, GLboolean &green, GLboolean &blue,

                           GLboolean &alpha);

void DVAPI tglMultColorMask(GLboolean red, GLboolean green, GLboolean blue,

                            GLboolean alpha);

//=============================================================================

/*!

  Draw a stroke in a GL context.

  \par stroke is element to draw

  \par rd: \sa TVectorRenderData

 */

/* spostati in tvectorgl.h

void DVAPI tglDraw(const TVectorRenderData &rd, const TStroke* stroke);

void DVAPI tglDraw(const TVectorRenderData &rd, const TVectorImage* vim);

void DVAPI tglDrawMask(const TVectorRenderData &rd, const TVectorImage* vim);

*/

//=============================================================================

/*!

  Draw a vector image in a GL context.

  \par vi vector image to draw

 */

/*

void DVAPI  drawVectorImage(

                     const TVectorImageP& vim,

                     const TRect& clippingRect,

                     const TAffine& aff,

                     const TColorFunction *cf = 0);

*/

//-----------------------------------------------------------------------------

#define NEW_DRAW_TEXT

enum GlDrawTextIndentation { Left = 0, Right = 1, Center = 2 };

// precision is the number of segments to draw the curve

void DVAPI tglDraw(const TCubic &cubic, int precision,

                   GLenum pointOrLine = GL_LINE);

void DVAPI tglDraw(const TRectD &rect, const std::vector<traster32p> &textures,</traster32p>

                   bool blending = true);

void DVAPI tglDraw(const TRectD &rect, const TRaster32P &tex,

                   bool blending = true);

void DVAPI tglBuildMipmaps(std::vector<traster32p> &rasters,</traster32p>

                           const TFilePath &filepath);

//-----------------------------------------------------------------------------

#ifdef _WIN32

typedef std::pair<hdc, hglrc=""> TGlContext;</hdc,>

#else

typedef void *TGlContext;

#endif

DVAPI TGlContext tglGetCurrentContext();

DVAPI void tglMakeCurrent(TGlContext context);

DVAPI void tglDoneCurrent(TGlContext context);

#endif