render_table.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/>.
 *
 */

#ifndef ZVISION_RENDER_TABLE_H
#define ZVISION_RENDER_TABLE_H

#include "common/rect.h"
#include "graphics/surface.h"

namespace ZVision {

class RenderTable {
public:
    RenderTable(uint numRows, uint numColumns);
    ~RenderTable();

public:
    enum RenderState {
        PANORAMA,
        TILT,
        FLAT
    };

private:
    uint _numColumns, _numRows;
    Common::Point *_internalBuffer;
    RenderState _renderState;

    struct {
        float fieldOfView;
        float linearScale;
        bool reverse;
        uint16 zeroPoint;
    } _panoramaOptions;

    // TODO: See if tilt and panorama need to have separate options
    struct {
        float fieldOfView;
        float linearScale;
        bool reverse;
        float gap;
    } _tiltOptions;

public:
    RenderState getRenderState() {
        return _renderState;
    }
    void setRenderState(RenderState newState);

    const Common::Point convertWarpedCoordToFlatCoord(const Common::Point &point);

    void mutateImage(uint16 *sourceBuffer, uint16 *destBuffer, uint32 destWidth, const Common::Rect &subRect);
    void mutateImage(Graphics::Surface *dstBuf, Graphics::Surface *srcBuf);
    void generateRenderTable();

    void setPanoramaFoV(float fov);
    void setPanoramaScale(float scale);
    void setPanoramaReverse(bool reverse);
    void setPanoramaZeroPoint(uint16 point);
    uint16 getPanoramaZeroPoint();
    bool getPanoramaReverse();

    void setTiltFoV(float fov);
    void setTiltScale(float scale);
    void setTiltReverse(bool reverse);

    float getTiltGap();
    float getAngle();
    float getLinscale();

private:
    void generatePanoramaLookupTable();
    void generateTiltLookupTable();
};

} // End of namespace ZVision

#endif