86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
// dome.hxx -- model sky with an upside down "bowl"
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//
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// Written by Curtis Olson, started December 1997.
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// SSG-ified by Curtis Olson, February 2000.
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//
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// Copyright (C) 1997-2000 Curtis L. Olson - curt@flightgear.org
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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//
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// $Id$
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#ifndef _SKYDOME_HXX
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#define _SKYDOME_HXX
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include <plib/ssg.h> // plib include
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class SGSkyDome {
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ssgTransform *dome_transform;
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ssgSimpleState *dome_state;
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ssgVertexArray *center_disk_vl;
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ssgColourArray *center_disk_cl;
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ssgVertexArray *upper_ring_vl;
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ssgColourArray *upper_ring_cl;
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ssgVertexArray *middle_ring_vl;
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ssgColourArray *middle_ring_cl;
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ssgVertexArray *lower_ring_vl;
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ssgColourArray *lower_ring_cl;
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public:
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// Constructor
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SGSkyDome( void );
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// Destructor
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~SGSkyDome( void );
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// initialize the sky object and connect it into our scene graph
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// root
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ssgBranch *build( double hscale = 80000.0, double vscale = 80000.0 );
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// repaint the sky colors based on current value of sun_angle,
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// sky, and fog colors. This updates the color arrays for
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// ssgVtxTable.
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// sun angle in degrees relative to verticle
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// 0 degrees = high noon
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// 90 degrees = sun rise/set
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// 180 degrees = darkest midnight
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bool repaint( sgVec3 sky_color, sgVec3 fog_color, double sun_angle,
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double vis );
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// reposition the sky at the specified origin and orientation
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// lon specifies a rotation about the Z axis
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// lat specifies a rotation about the new Y axis
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// spin specifies a rotation about the new Z axis (and orients the
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// sunrise/set effects
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bool reposition( sgVec3 p, double lon, double lat, double spin );
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};
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#endif // _SKYDOME_HXX
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