117 lines
4 KiB
C++
117 lines
4 KiB
C++
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/*
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* (c) Copyright 1993, Silicon Graphics, Inc.
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* ALL RIGHTS RESERVED
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* Permission to use, copy, modify, and distribute this software for
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* any purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both the copyright notice
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* and this permission notice appear in supporting documentation, and that
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* the name of Silicon Graphics, Inc. not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission.
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*
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* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
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* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
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* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
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* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
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* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
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* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
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* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
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* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* US Government Users Restricted Rights
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
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* (c)(1)(ii) of the Rights in Technical Data and Computer Software
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* clause at DFARS 252.227-7013 and/or in similar or successor
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* clauses in the FAR or the DOD or NASA FAR Supplement.
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* Unpublished-- rights reserved under the copyright laws of the
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* United States. Contractor/manufacturer is Silicon Graphics,
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* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
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*
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* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
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*/
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#ifndef SCENE_H
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#define SCENE_H
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#pragma warning(disable:4305)
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#include "point.hxx"
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/* Index of refraction stuff */
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const GLfloat min_index = .1;
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const GLfloat max_index = 2.5;
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const int nindices = 6;
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const struct {
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const char *name;
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GLfloat index;
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} indices[] = {
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{"Air", 1.0},
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{"Ice", 1.31},
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{"Water", 1.33},
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{"Zinc Crown Glass", 1.517},
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{"Light Flint Glass", 1.650},
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{"Heavy Flint Glass", 1.890}
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};
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const int def_refraction_index = 4;
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typedef struct {
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GLfloat diffuse[4];
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Point pos;
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GLboolean shadow_mask[4];
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GLfloat matrix[16];
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char name[64];
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int on;
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} light;
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const int nlights = 3;
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//extern light lights[];
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/* scene_load_texture uses no OpenGL calls and so can be called before
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* mapping the window */
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int scene_load_texture(char *texfile);
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//const char def_texfile[] = DATADIR "floor.rgb";
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const char def_texfile[] = "floor.rgb";
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extern int possible_divisions[];
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const int npossible_divisions = 4;
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const int def_divisions_index = 1;
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extern GLfloat aspect;
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extern int draw_square, draw_shadows, draw_refraction, draw_sphere,
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draw_lights, draw_texture;
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/* These are names used for picking */
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const int name_background = 0;
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const int name_square = 1;
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const int name_sphere = 2;
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const int name_lights = 3;
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void scene_init();
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void scene_draw();
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int scene_pick(GLdouble x, GLdouble y);
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/* This returns all the lights to their default postions */
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void scene_reset_lights();
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void lights_onoff(int light, int val);
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void refraction_change(GLfloat refraction);
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void divisions_change(int divisions);
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/* name is one of the names defined above.
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* phi, theta are in radians and are the amount of motion requested
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* returns whether or not it did anything.
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* If update is zero, the shadows and refractions will not be recomputed */
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int scene_move(int name, float dr, float dphi, float dtheta, int update);
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/* This function is a companion to scene_move().
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* It recomputes the shadows and refractions - dr, dphi, and dtheta
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* should indicate whether or not the respective values were changed
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* since the stuff was last computed. */
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void scene_move_update(int name, int dr, int dphi, int dtheta);
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#endif
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