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 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 Library General Public
19 // License along with this library; if not, write to the
20 // Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 // Boston, MA 02111-1307, USA.
31 # error This library requires C++
35 #include <plib/ssg.h> // plib include
39 ssgTransform *dome_transform;
40 ssgSimpleState *dome_state;
42 ssgVertexArray *center_disk_vl;
43 ssgColourArray *center_disk_cl;
45 ssgVertexArray *upper_ring_vl;
46 ssgColourArray *upper_ring_cl;
48 ssgVertexArray *middle_ring_vl;
49 ssgColourArray *middle_ring_cl;
51 ssgVertexArray *lower_ring_vl;
52 ssgColourArray *lower_ring_cl;
62 // initialize the sky object and connect it into our scene graph
64 ssgBranch *build( double hscale = 80000.0, double vscale = 80000.0 );
66 // repaint the sky colors based on current value of sun_angle,
67 // sky, and fog colors. This updates the color arrays for
69 // sun angle in degrees relative to verticle
70 // 0 degrees = high noon
71 // 90 degrees = sun rise/set
72 // 180 degrees = darkest midnight
73 bool repaint( sgVec3 sky_color, sgVec3 fog_color, double sun_angle,
76 // reposition the sky at the specified origin and orientation
77 // lon specifies a rotation about the Z axis
78 // lat specifies a rotation about the new Y axis
79 // spin specifies a rotation about the new Z axis (and orients the
80 // sunrise/set effects
81 bool reposition( sgVec3 p, double lon, double lat, double spin );
85 #endif // _SKYDOME_HXX