3dshadow_volume.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * This file is based on WME.
 * http://dead-code.org/redir.php?target=wme
 * Copyright (c) 2003-2013 Jan Nedoma and contributors
 */

#ifndef WINTERMUTE_3D_SHADOW_VOLUME_H
#define WINTERMUTE_3D_SHADOW_VOLUME_H

#include "engines/wintermute//base/base.h"
#include "engines/wintermute/coll_templ.h"
#include "math/matrix4.h"
#include "math/vector3d.h"

namespace Wintermute {

struct ShadowVertex {
    float x;
    float y;
    float z;
    uint8 r;
    uint8 g;
    uint8 b;
    uint8 a;
};

class ShadowVolume : public BaseClass {
public:
    ShadowVolume(BaseGame *inGame);
    virtual ~ShadowVolume();

    void addVertex(const Math::Vector3d &vertex);
    bool reset();

    virtual bool renderToStencilBuffer() = 0;
    virtual bool renderToScene() = 0;

    bool setColor(uint32 color);

protected:
    BaseArray<Math::Vector3d> _vertices; // Vertex data for rendering shadow volume
    uint32 _color;

private:
    virtual bool initMask() = 0;
};

} // namespace Wintermute

#endif