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      1 
      2 /* Copyright (c) Mark J. Kilgard, 1994. */
      3 
      4 /**
      5  * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
      6  * ALL RIGHTS RESERVED
      7  * Permission to use, copy, modify, and distribute this software for
      8  * any purpose and without fee is hereby granted, provided that the above
      9  * copyright notice appear in all copies and that both the copyright notice
     10  * and this permission notice appear in supporting documentation, and that
     11  * the name of Silicon Graphics, Inc. not be used in advertising
     12  * or publicity pertaining to distribution of the software without specific,
     13  * written prior permission.
     14  *
     15  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
     16  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
     17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
     18  * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
     19  * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
     20  * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
     21  * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
     22  * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
     23  * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
     24  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
     25  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
     26  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
     27  *
     28  * US Government Users Restricted Rights
     29  * Use, duplication, or disclosure by the Government is subject to
     30  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
     31  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
     32  * clause at DFARS 252.227-7013 and/or in similar or successor
     33  * clauses in the FAR or the DOD or NASA FAR Supplement.
     34  * Unpublished-- rights reserved under the copyright laws of the
     35  * United States.  Contractor/manufacturer is Silicon Graphics,
     36  * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
     37  *
     38  * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
     39  */
     40 #include <stdio.h>
     41 #include <stdlib.h>
     42 #include <string.h>
     43 #include <math.h>
     44 #include <sys/time.h>
     45 #include <GLUT/glut.h>
     46 #include "atlantis.h"
     47 
     48 fishRec sharks[NUM_SHARKS];
     49 fishRec momWhale;
     50 fishRec babyWhale;
     51 fishRec dolph;
     52 
     53 GLboolean Timing = GL_TRUE;
     54 
     55 int w_win = 640;
     56 int h_win = 480;
     57 GLint count  = 0;
     58 GLenum StrMode = GL_VENDOR;
     59 
     60 GLboolean moving;
     61 
     62 static double mtime(void)
     63 {
     64    struct timeval tk_time;
     65    struct timezone tz;
     66 
     67    gettimeofday(&tk_time, &tz);
     68 
     69    return 4294.967296 * tk_time.tv_sec + 0.000001 * tk_time.tv_usec;
     70 }
     71 
     72 static double filter(double in, double *save)
     73 {
     74 	static double k1 = 0.9;
     75 	static double k2 = 0.05;
     76 
     77 	save[3] = in;
     78 	save[1] = save[0]*k1 + k2*(save[3] + save[2]);
     79 
     80 	save[0]=save[1];
     81 	save[2]=save[3];
     82 
     83 	return(save[1]);
     84 }
     85 
     86 void DrawStr(const char *str)
     87 {
     88 	GLint i = 0;
     89 
     90 	if(!str) return;
     91 
     92 	while(str[i])
     93 	{
     94 		glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, str[i]);
     95 		i++;
     96 	}
     97 }
     98 
     99 void
    100 InitFishs(void)
    101 {
    102     int i;
    103 
    104     for (i = 0; i < NUM_SHARKS; i++) {
    105         sharks[i].x = 70000.0 + rand() % 6000;
    106         sharks[i].y = rand() % 6000;
    107         sharks[i].z = rand() % 6000;
    108         sharks[i].psi = rand() % 360 - 180.0;
    109         sharks[i].v = 1.0;
    110     }
    111 
    112     dolph.x = 30000.0;
    113     dolph.y = 0.0;
    114     dolph.z = 6000.0;
    115     dolph.psi = 90.0;
    116     dolph.theta = 0.0;
    117     dolph.v = 3.0;
    118 
    119     momWhale.x = 70000.0;
    120     momWhale.y = 0.0;
    121     momWhale.z = 0.0;
    122     momWhale.psi = 90.0;
    123     momWhale.theta = 0.0;
    124     momWhale.v = 3.0;
    125 
    126     babyWhale.x = 60000.0;
    127     babyWhale.y = -2000.0;
    128     babyWhale.z = -2000.0;
    129     babyWhale.psi = 90.0;
    130     babyWhale.theta = 0.0;
    131     babyWhale.v = 3.0;
    132 }
    133 
    134 void
    135 Atlantis_Init(void)
    136 {
    137     static float ambient[] = {0.2, 0.2, 0.2, 1.0};
    138     static float diffuse[] = {1.0, 1.0, 1.0, 1.0};
    139     static float position[] = {0.0, 1.0, 0.0, 0.0};
    140     static float mat_shininess[] = {90.0};
    141     static float mat_specular[] = {0.8, 0.8, 0.8, 1.0};
    142     static float mat_diffuse[] = {0.46, 0.66, 0.795, 1.0};
    143     static float mat_ambient[] = {0.3, 0.4, 0.5, 1.0};
    144     static float lmodel_ambient[] = {0.4, 0.4, 0.4, 1.0};
    145     static float lmodel_localviewer[] = {0.0};
    146     //GLfloat map1[4] = {0.0, 0.0, 0.0, 0.0};
    147     //GLfloat map2[4] = {0.0, 0.0, 0.0, 0.0};
    148     static float fog_color[] = {0.0, 0.5, 0.9, 1.0};
    149 
    150     glFrontFace(GL_CCW);
    151 
    152     glDepthFunc(GL_LESS);
    153     glEnable(GL_DEPTH_TEST);
    154 
    155     glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
    156     glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
    157     glLightfv(GL_LIGHT0, GL_POSITION, position);
    158     glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
    159     glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, lmodel_localviewer);
    160     glEnable(GL_LIGHTING);
    161     glEnable(GL_LIGHT0);
    162 
    163     glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
    164     glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
    165     glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
    166     glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
    167 
    168     InitFishs();
    169 
    170     glEnable(GL_FOG);
    171 	glFogi(GL_FOG_MODE, GL_EXP);
    172 	glFogf(GL_FOG_DENSITY, 0.0000025);
    173 	glFogfv(GL_FOG_COLOR, fog_color);
    174 
    175     glClearColor(0.0, 0.5, 0.9, 1.0);
    176 }
    177 
    178 void
    179 Atlantis_Reshape(int width, int height)
    180 {
    181 	w_win = width;
    182 	h_win = height;
    183 
    184     glViewport(0, 0, width, height);
    185 
    186     glMatrixMode(GL_PROJECTION);
    187     glLoadIdentity();
    188     gluPerspective(60.0, (GLfloat) width / (GLfloat) height, 20000.0, 300000.0);
    189     glMatrixMode(GL_MODELVIEW);
    190 }
    191 
    192 void
    193 Atlantis_Animate(void)
    194 {
    195     int i;
    196 
    197     for (i = 0; i < NUM_SHARKS; i++) {
    198         SharkPilot(&sharks[i]);
    199         SharkMiss(i);
    200     }
    201     WhalePilot(&dolph);
    202     dolph.phi++;
    203     //glutPostRedisplay();
    204     WhalePilot(&momWhale);
    205     momWhale.phi++;
    206     WhalePilot(&babyWhale);
    207     babyWhale.phi++;
    208 }
    209 
    210 void
    211 Atlantis_Key(unsigned char key, int x, int y)
    212 {
    213     switch (key) {
    214     case 't':
    215     	Timing = !Timing;
    216     break;
    217     case ' ':
    218     	switch(StrMode)
    219     	{
    220 		    case GL_EXTENSIONS:
    221     			StrMode = GL_VENDOR;
    222 		    break;
    223 		    case GL_VENDOR:
    224 		    	StrMode = GL_RENDERER;
    225 		    break;
    226 		    case GL_RENDERER:
    227 		    	StrMode = GL_VERSION;
    228 		    break;
    229 		    case GL_VERSION:
    230 		    	StrMode = GL_EXTENSIONS;
    231 		    break;
    232 		}
    233 	break;
    234     case 27:           /* Esc will quit */
    235         exit(1);
    236     break;
    237     case 's':             		/* "s" start animation */
    238         moving = GL_TRUE;
    239         //glutIdleFunc(Animate);
    240     break;
    241     case 'a':          			/* "a" stop animation */
    242         moving = GL_FALSE;
    243         //glutIdleFunc(NULL);
    244     break;
    245     case '.':          			/* "." will advance frame */
    246         if (!moving) {
    247             Atlantis_Animate();
    248         }
    249     }
    250 }
    251 /*
    252 void Display(void)
    253 {
    254 	static float P123[3] = {-448.94, -203.14, 9499.60};
    255 	static float P124[3] = {-442.64, -185.20, 9528.07};
    256 	static float P125[3] = {-441.07, -148.05, 9528.07};
    257 	static float P126[3] = {-443.43, -128.84, 9499.60};
    258 	static float P127[3] = {-456.87, -146.78, 9466.67};
    259 	static float P128[3] = {-453.68, -183.93, 9466.67};
    260 
    261 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    262 
    263 	glPushMatrix();
    264     FishTransform(&dolph);
    265     DrawDolphin(&dolph);
    266     glPopMatrix();
    267 
    268 	glutSwapBuffers();
    269 }
    270 */
    271 
    272 void
    273 Atlantis_Display(void)
    274 {
    275     int i;
    276     static double th[4] = {0.0, 0.0, 0.0, 0.0};
    277 	static double t1 = 0.0, t2 = 0.0, t;
    278 	char num_str[128];
    279 
    280     t1 = t2;
    281 
    282     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    283 
    284     for (i = 0; i < NUM_SHARKS; i++) {
    285         glPushMatrix();
    286         FishTransform(&sharks[i]);
    287         DrawShark(&sharks[i]);
    288         glPopMatrix();
    289     }
    290 
    291     glPushMatrix();
    292     FishTransform(&dolph);
    293     DrawDolphin(&dolph);
    294     glPopMatrix();
    295 
    296     glPushMatrix();
    297     FishTransform(&momWhale);
    298     DrawWhale(&momWhale);
    299     glPopMatrix();
    300 
    301     glPushMatrix();
    302     FishTransform(&babyWhale);
    303     glScalef(0.45, 0.45, 0.3);
    304     DrawWhale(&babyWhale);
    305     glPopMatrix();
    306 
    307     if(Timing)
    308     {
    309 		t2 = mtime();
    310 		t = t2 - t1;
    311 		if(t > 0.0001) t = 1.0 / t;
    312 
    313 		glDisable(GL_LIGHTING);
    314 		//glDisable(GL_DEPTH_TEST);
    315 
    316 		glColor3f(1.0, 0.0, 0.0);
    317 
    318 		glMatrixMode (GL_PROJECTION);
    319 		glPushMatrix();
    320 		glLoadIdentity();
    321 		glOrtho(0, w_win, 0, h_win, -10.0, 10.0);
    322 
    323 		glRasterPos2f(5.0, 5.0);
    324 
    325 		switch(StrMode)
    326 		{
    327 			case GL_VENDOR:
    328 				sprintf(num_str, "%0.2f Hz, %dx%d, VENDOR: ", filter(t, th), w_win, h_win);
    329 				DrawStr(num_str);
    330 				DrawStr(glGetString(GL_VENDOR));
    331 			break;
    332 			case GL_RENDERER:
    333 				sprintf(num_str, "%0.2f Hz, %dx%d, RENDERER: ", filter(t, th), w_win, h_win);
    334 				DrawStr(num_str);
    335 				DrawStr(glGetString(GL_RENDERER));
    336 			break;
    337 			case GL_VERSION:
    338 				sprintf(num_str, "%0.2f Hz, %dx%d, VERSION: ", filter(t, th), w_win, h_win);
    339 				DrawStr(num_str);
    340 				DrawStr(glGetString(GL_VERSION));
    341 			break;
    342 			case GL_EXTENSIONS:
    343 				sprintf(num_str, "%0.2f Hz, %dx%d, EXTENSIONS: ", filter(t, th), w_win, h_win);
    344 				DrawStr(num_str);
    345 				DrawStr(glGetString(GL_EXTENSIONS));
    346 			break;
    347 		}
    348 
    349 		glPopMatrix();
    350 		glMatrixMode(GL_MODELVIEW);
    351 
    352 		glEnable(GL_LIGHTING);
    353 		//glEnable(GL_DEPTH_TEST);
    354 	}
    355 
    356     count++;
    357 
    358     glutSwapBuffers();
    359 }
    360 
    361 /*
    362 void
    363 Visible(int state)
    364 {
    365     if (state == GLUT_VISIBLE) {
    366         if (moving)
    367             glutIdleFunc(Animate);
    368     } else {
    369         if (moving)
    370             glutIdleFunc(NULL);
    371     }
    372 }
    373 
    374 
    375 void
    376 timingSelect(int value)
    377 {
    378     switch(value)
    379     {
    380 		case 1:
    381 			StrMode = GL_VENDOR;
    382 		break;
    383 		case 2:
    384 			StrMode = GL_RENDERER;
    385 		break;
    386 		case 3:
    387 			StrMode = GL_VERSION;
    388 		break;
    389 		case 4:
    390 			StrMode = GL_EXTENSIONS;
    391 		break;
    392     }
    393 }
    394 
    395 void
    396 menuSelect(int value)
    397 {
    398     switch (value) {
    399     case 1:
    400         moving = GL_TRUE;
    401         glutIdleFunc(Animate);
    402         break;
    403     case 2:
    404         moving = GL_FALSE;
    405         glutIdleFunc(NULL);
    406         break;
    407     case 4:
    408         exit(0);
    409         break;
    410     }
    411 }
    412 
    413 int
    414 main(int argc, char **argv)
    415 {
    416 	GLboolean fullscreen = GL_FALSE;
    417 	GLint time_menu;
    418 
    419  	srand(0);
    420 
    421         glutInit(&argc, argv);
    422 	if (argc > 1 && !strcmp(argv[1], "-w"))
    423 		fullscreen = GL_FALSE;
    424 
    425 	//glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
    426 	glutInitDisplayString("rgba double depth=24");
    427 	if (fullscreen) {
    428 	  glutGameModeString("1024x768:32");
    429 	  glutEnterGameMode();
    430 	} else {
    431 	  glutInitWindowSize(320, 240);
    432 	  glutCreateWindow("Atlantis Timing");
    433 	}
    434     Init();
    435     glutDisplayFunc(Display);
    436     glutReshapeFunc(Reshape);
    437     glutKeyboardFunc(Key);
    438     moving = GL_TRUE;
    439 glutIdleFunc(Animate);
    440     glutVisibilityFunc(Visible);
    441 
    442     time_menu = glutCreateMenu(timingSelect);
    443     glutAddMenuEntry("GL_VENDOR", 1);
    444     glutAddMenuEntry("GL_RENDERER", 2);
    445     glutAddMenuEntry("GL_VERSION", 3);
    446     glutAddMenuEntry("GL_EXTENSIONS", 4);
    447 
    448     glutCreateMenu(menuSelect);
    449     glutAddMenuEntry("Start motion", 1);
    450     glutAddMenuEntry("Stop motion", 2);
    451     glutAddSubMenu("Timing Mode", time_menu);
    452     glutAddMenuEntry("Quit", 4);
    453 
    454     //glutAttachMenu(GLUT_RIGHT_BUTTON);
    455     glutAttachMenu(GLUT_RIGHT_BUTTON);
    456     glutMainLoop();
    457     return 0;             // ANSI C requires main to return int.
    458 }
    459 */