1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/****************************************************************************
Xplanet 0.94 - render an image of a planet into an X window
Copyright (C) 2002 Hari Nair <hari@alumni.caltech.edu>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
****************************************************************************/
#ifndef PROJECTIONBASE_H
#define PROJECTIONBASE_H
#include <string>
using namespace std;
class ProjectionRectangular;
class ProjectionBase
{
public:
unsigned char *rgb_data;
unsigned char *png_alpha; // alpha channel (opacity) for PNG output
ProjectionBase();
ProjectionBase(const int w, const int h);
virtual ~ProjectionBase();
int getWidth() const;
int getHeight() const;
virtual void drawRings();
virtual void setRadius(const double r);
virtual int pixelToSpherical(const int x, const int y,
double &lon, double &lat) = 0;
virtual int sphericalToPixel(double lon, double lat,
int &x, int &y) const = 0;
virtual int sphericalToPixel(double lon, double lat, double r,
int &x, int &y) const;
virtual void createProjection(const ProjectionRectangular *image_rect);
void drawGreatArc(const double lon1, const double lat1, const double r1,
const double lon2, const double lat2, const double r2,
const float spacing, const unsigned char *color);
void drawGreatArc(const double lon1, const double lat1,
const double lon2, const double lat2,
const float spacing, const unsigned char *color);
void drawGrid();
protected:
int width, height;
double radius;
double rot[3][3];
bool rotate;
void rotatePoint(double &lon, double &lat) const;
void setBackground();
// for the photometric function
int table_size;
double darkening;
double *cosangle;
double *photo_function;
void buildPhotoTable();
void destroyPhotoTable();
double getPhotoFunction(const double x) const;
private:
void placeDot(const double lon, const double lat);
void placeDot(const double lon, const double lat,
const unsigned char *color);
void placeDot(const double lon, const double lat, const double r,
const unsigned char *color);
};
#endif
|
