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 - curt@flightgear.org
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // 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., 675 Mass Ave, Cambridge, MA 02139, 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;
61 // initialize the sky object and connect it into our scene graph
65 // repaint the sky colors based on current value of sun_angle,
66 // sky, and fog colors. This updates the color arrays for
68 // sun angle in degrees relative to verticle
69 // 0 degrees = high noon
70 // 90 degrees = sun rise/set
71 // 180 degrees = darkest midnight
72 bool repaint( sgVec3 sky_color, sgVec3 fog_color, double sun_angle );
74 // reposition the sky at the specified origin and orientation
75 // lon specifies a rotation about the Z axis
76 // lat specifies a rotation about the new Y axis
77 // spin specifies a rotation about the new Z axis (and orients the
78 // sunrise/set effects
79 bool reposition( sgVec3 p, double lon, double lat, double spin );
83 #endif // _SKYDOME_HXX