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SGI Developer Toolbox 6.1
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SGI Developer Toolbox 6.1 - Disc 1.iso
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atmosphere.h
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C/C++ Source or Header
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1996-11-11
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3KB
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90 lines
/*
* (c) Copyright 1993, Silicon Graphics, Inc.
* ALL RIGHTS RESERVED
*
* Permission to use, copy, modify, and distribute this software for
* any purpose and without fee is hereby granted, provided that the above
* copyright notice appear in all copies and that both the copyright notice
* and this permission notice appear in supporting documentation, and that
* the name of Silicon Graphics, Inc. not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission.
*
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
*
* U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND
* Use, duplication, or disclosure by the Government is subject to
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
* clause at DFARS 252.227-7013 and/or in similar or successor
* clauses in the FAR or the DOD or NASA FAR Supplement.
* Unpublished-- rights reserved under the copyright laws of the
* United States. Contractor/manufacturer is Silicon Graphics,
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
*
* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
*/
#ifndef ATMOSPHERE_H
#define ATMOSPHERE_H
#ifndef ATMOSPHERE_EXTERN
#define ATMOSPHERE_EXTERN extern
#endif
#include "Color.h"
#include "Point.h"
const int weather_max_name = 64;
class Weather {
public:
Weather();
Weather(const char *n, GLfloat fd, GLfloat fs = 1, Color fc = white,
Color s1 = blue, Color s2 = white,
GLfloat sb = 1,
GLenum ls = GL_LIGHT0, GLenum la = GL_LIGHT1);
~Weather();
Weather operator=(Weather a);
/* The sun position is used to determine how light / dark it is */
void apply(Point sun);
void draw_sky(Point sun);
/* This is how much to blur shadows due to haze or fog */
GLfloat shadow_blur();
char name[weather_max_name];
GLfloat fog_density;
Color fog_color;
/* Fog spread relates the height to the density of the fog -- 1.0
* leads to uniform fog */
GLfloat fog_spread;
Color sky_top;
Color sky_bottom;
GLenum light_sun, light_ambient;
GLfloat sun_brightness;
private:
};
const int nweathers = 4;
extern Weather weathers[nweathers];
const int def_weather_index = 0;
#undef ATMOSPHERE_EXTERN
#endif