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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#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;
	} _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 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