/*
   PrtView plugin for GtkRadiant
   Copyright (C) 2001 Geoffrey Dewan, Loki software and qeradiant.com

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _PORTALS_H_
#define _PORTALS_H_

#include <glib.h>
#include "irender.h"
#include "renderable.h"
#include "math/vector.h"


class CBspPoint {
public:
float p[3];
};

class CBspPortal {
public:
CBspPortal();
~CBspPortal();

protected:

public:
CBspPoint center;
unsigned point_count;
CBspPoint *point;
CBspPoint *inner_point;
float fp_color_random[4];
float min[3];
float max[3];
float dist;
bool hint;

bool Build( char *def );
};

#ifdef PATH_MAX
const int PRTVIEW_PATH_MAX = PATH_MAX;
#else
const int PRTVIEW_PATH_MAX = 260;
#endif
typedef guint32 PackedColour;
#define RGB( r, g, b ) ( (guint32)( ( (guint8) ( r ) | ( (guint16) ( g ) << 8 ) ) | ( ( (guint32) (guint8) ( b ) ) << 16 ) ) )
#define GetRValue( rgb )      ( (guint8)( rgb ) )
#define GetGValue( rgb )      ( (guint8)( ( (guint16)( rgb ) ) >> 8 ) )
#define GetBValue( rgb )      ( (guint8)( ( rgb ) >> 16 ) )


class CPortals {
public:

CPortals();
~CPortals();

protected:


public:

void Load();     // use filename in fn
void Purge();

void FixColors();

char fn[PRTVIEW_PATH_MAX];

int zbuffer;
int polygons;
int lines;
bool show_3d;
bool aa_3d;
bool fog;
PackedColour color_3d;
float width_3d;      // in 8'ths
float fp_color_3d[4];
PackedColour color_fog;
float fp_color_fog[4];
float trans_3d;
float clip_range;
bool clip;

bool show_2d;
bool aa_2d;
PackedColour color_2d;
float width_2d;      // in 8'ths
float fp_color_2d[4];

CBspPortal *portal;
int *portal_sort;
bool hint_flags;
//	CBspNode *node;

unsigned int node_count;
unsigned int portal_count;
};

class CubicClipVolume
{
public:
Vector3 cam, min, max;
};

class CPortalsDrawSolid : public OpenGLRenderable
{
public:
mutable CubicClipVolume clip;
void render( RenderStateFlags state ) const;
};

class CPortalsDrawSolidOutline : public OpenGLRenderable
{
public:
mutable CubicClipVolume clip;
void render( RenderStateFlags state ) const;
};

class CPortalsDrawWireframe : public OpenGLRenderable
{
public:
void render( RenderStateFlags state ) const;
};

class CPortalsRender : public Renderable
{
public:
CPortalsDrawSolid m_drawSolid;
CPortalsDrawSolidOutline m_drawSolidOutline;
CPortalsDrawWireframe m_drawWireframe;

void renderSolid( Renderer& renderer, const VolumeTest& volume ) const;
void renderWireframe( Renderer& renderer, const VolumeTest& volume ) const;
};

extern CPortals portals;
extern CPortalsRender render;

void Portals_constructShaders();
void Portals_destroyShaders();

void Portals_shadersChanged();


#endif // _PORTALS_H_
