1 // dome.hxx -- model sky with an upside down "bowl"
3 // Written by Curtis Olson, started December 1997.
4 // SSG-ified by Curtis Olson, February 2000.
6 // Copyright (C) 1997-2000 Curtis L. Olson - http://www.flightgear.org/~curt
8 // This library is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Library General Public
10 // License as published by the Free Software Foundation; either
11 // version 2 of the License, or (at your option) any later version.
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Library General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30 # error This library requires C++
34 #include <plib/ssg.h> // plib include
38 ssgTransform *dome_transform;
39 ssgSimpleState *dome_state;
41 ssgVertexArray *center_disk_vl;
42 ssgColourArray *center_disk_cl;
44 ssgVertexArray *upper_ring_vl;
45 ssgColourArray *upper_ring_cl;
47 ssgVertexArray *middle_ring_vl;
48 ssgColourArray *middle_ring_cl;
50 ssgVertexArray *lower_ring_vl;
51 ssgColourArray *lower_ring_cl;
63 // initialize the sky object and connect it into our scene graph
65 ssgBranch *build( double hscale = 80000.0, double vscale = 80000.0 );
67 // repaint the sky colors based on current value of sun_angle,
68 // sky, and fog colors. This updates the color arrays for
70 // sun angle in degrees relative to verticle
71 // 0 degrees = high noon
72 // 90 degrees = sun rise/set
73 // 180 degrees = darkest midnight
74 bool repaint( sgVec3 sky_color, sgVec3 fog_color, double sun_angle,
77 // reposition the sky at the specified origin and orientation
78 // lon specifies a rotation about the Z axis
79 // lat specifies a rotation about the new Y axis
80 // spin specifies a rotation about the new Z axis (and orients the
81 // sunrise/set effects
82 bool reposition( sgVec3 p, double lon, double lat, double spin );
86 #endif // _SKYDOME_HXX