vmap/contrib/prtview/portals.h

/*
   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_