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/*
* (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. * * US Government Users Restricted Rights * 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 * Unpublished-- rights reserved under the copyright laws of the * United States.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 SCENE_H
#define SCENE_H
#pragma warning(disable:4305)
#include "point.hxx"
/* Index of refraction stuff */const GLfloat min_index = .1;const GLfloat max_index = 2.5;const int nindices = 6;const struct { const char *name; GLfloat index;} indices[] = { {"Air", 1.0}, {"Ice", 1.31}, {"Water", 1.33}, {"Zinc Crown Glass", 1.517}, {"Light Flint Glass", 1.650}, {"Heavy Flint Glass", 1.890}};const int def_refraction_index = 4;
typedef struct { GLfloat diffuse[4]; Point pos; GLboolean shadow_mask[4]; GLfloat matrix[16]; char name[64]; int on;} light;const int nlights = 3;//extern light lights[];
/* scene_load_texture uses no OpenGL calls and so can be called before
* mapping the window */int scene_load_texture(char *texfile);//const char def_texfile[] = DATADIR "floor.rgb";
const char def_texfile[] = "floor.rgb";
extern int possible_divisions[];const int npossible_divisions = 4;const int def_divisions_index = 1;
extern GLfloat aspect;
extern int draw_square, draw_shadows, draw_refraction, draw_sphere, draw_lights, draw_texture;
/* These are names used for picking */const int name_background = 0;const int name_square = 1;const int name_sphere = 2;const int name_lights = 3;
void scene_init();void scene_draw();int scene_pick(GLdouble x, GLdouble y);
/* This returns all the lights to their default postions */void scene_reset_lights();
void lights_onoff(int light, int val);void refraction_change(GLfloat refraction);void divisions_change(int divisions);
/* name is one of the names defined above.
* phi, theta are in radians and are the amount of motion requested * returns whether or not it did anything. * If update is zero, the shadows and refractions will not be recomputed */int scene_move(int name, float dr, float dphi, float dtheta, int update);
/* This function is a companion to scene_move().
* It recomputes the shadows and refractions - dr, dphi, and dtheta * should indicate whether or not the respective values were changed * since the stuff was last computed. */void scene_move_update(int name, int dr, int dphi, int dtheta);
#endif
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