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/* 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 TITANIC_VIEWPORT_H
#define TITANIC_VIEWPORT_H
#include "titanic/star_control/base_stars.h"
#include "titanic/star_control/fpose.h"
class SimpleFile;
namespace Titanic {
/**
* The color of the stars when drawn (CBaseStars::draw)
* For starview it should be white
* For skyview it should be pink
*/
enum StarColor { WHITE = 0, PINK = 2 };
/**
* Implements the viewport functionality for viewing the star field in
* a given position and orientation.
* CCamera is a big user of this class
*/
class CViewport {
private:
double _spin;
double _centerYAngleDegrees;
double _centerZAngleDegrees;
int _width;
int _height;
FMatrix _orientation;
FPose _currentPose;
FPose _rawPose;
FPoint _center;
bool _poseUpToDate;
private:
void reset();
public:
FVector _position;
double _frontClip;
double _backClip;
StarColor _starColor; // Used in CBaseStars::draw
double _valArray[2]; // has value 0.0 or 30.0
double _isZero;
double _pixel1OffSetX; // Used in CBaseStars::draw3 and CBaseStars::draw4 has value 0.0 or 28000.0
double _pixel2OffSetX; // Used in CBaseStars::draw3 and CBaseStars::draw4 has value 0.0 or -28000.0
FVector _centerVector;
public:
CViewport();
CViewport(CViewport *src);
/**
* Copys the data from another instance
*/
void copyFrom(const CViewport *src);
/**
* Load the data for the class from file
*/
void load(SimpleFile *file, int param);
/**
* Save the data for the class to file
*/
void save(SimpleFile *file, int indent);
/**
* Sets the position
*/
void setPosition(const FVector &v);
/**
* Sets the position
*/
void setPosition(const FPose &pose);
/**
* Sets the orientation from a passed matrix
*/
void setOrientation(const FMatrix &m);
/**
* Sets the orientation from a passed vector
*/
void setOrientation(const FVector &v);
void randomizeOrientation();
/**
* The view has changed between starview and skyview
* Change the enum that tracks the color of the stars
* Also change the X coordinate pixel offset used for star drawing
*/
void changeStarColorPixel(StarMode mode, double pixelOffSet);
void reposition(double factor);
/**
* Applys a rotation matrix to the current
* orientation
*/
void changeOrientation(const FMatrix &matrix);
FPose getPose();
FPose getRawPose();
FVector getRelativePosNoCentering(int index, const FVector &src);
FVector getRelativePosCentering(int index, const FVector &src);
FVector getRelativePosCenteringRaw(int index, const FVector &src);
/**
* All arguments are return values
* First is the x center coordinate relative to y
* Second is the x center coordinate relative to z
* Third is the first x center pixel offset
* Fourth is the second x center pixel offset
*/
void getRelativeXCenterPixels(double *v1, double *v2, double *v3, double *v4);
/**
* Returns the viewport's orientation
*/
const FMatrix &getOrientation() const;
/**
* Assigns a roll angle about the view direction
*/
void SetRoleAngle(double angle);
/**
* Assign a near clip plane distance
*/
void setFrontClip(double dist);
/**
* Assign a far clipping plane distance
*/
void setBackClip(double dist);
/**
* Sets the center vector y angle
* The actual center y value doesn't
* change until reset is called
*/
void setCenterYAngle(double angleDegrees);
/**
* Sets the center vector z angle
* The actual center z value doesn't
* change until reset is called
*/
void setCenterZAngle(double angleDegrees);
};
} // End of namespace Titanic
#endif /* TITANIC_VIEWPORT_H */
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