3de: render.c annotate

annotate render.c @ 20:ebc55ce699ec

Rotate the other way around: z, y, x - more useful to us

author	Josef "Jeff" Sipek <jeffpc@optonline.net>
date	Sat, 03 Dec 2005 00:35:58 -0500
parents	4722afb8751c
children	9a34b00c0659

rev	line source
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	1 // System & parser
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	2 #include <string.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	3 #include <stdlib.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	4 #include <errno.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	5 #define _GNU_SOURCE
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	6 #include <stdio.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	7 #include <sys/types.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	8 #include <sys/stat.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	9 #include <fcntl.h>
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	10 #include <unistd.h>
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	11 #include <time.h>
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	12
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	13 // OpenGL
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	14 #include "GL/glut.h"
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	15
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	16 #define BUF_SIZE 1024
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	17 #define TIMER_PERIOD 10
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	18
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	19 #define PIPE_IN "/tmp/3de.in"
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	20 #define PIPE_OUT "/tmp/3de.out"
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	21
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	22 int infd;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	23 int outfd;
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	24 char buf, ptr;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	25
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	26 int frames;
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	27 struct timespec start;
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	28
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	29 void display(void);
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	30
19 4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	31 float cam_x;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	32 float cam_y;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	33 float cam_z;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	34 float cam_ax;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	35 float cam_ay;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	36 float cam_az;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	37
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	38 int valid_digit_char(char c)
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	39 {
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	40 if (((c >= '0') && (c <= '9')) \|\| (c == '-') \|\| (c == '+') \|\| (c == '.'))
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	41 return 1;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	42 return 0;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	43 }
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	44
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	45 char* update_ptr(char* buf)
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	46 {
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	47 int i;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	48 int on_num;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	49
6 b06a7e9cda60 cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 5 diff changeset	50 for(i=0, on_num=0; i<6; buf++) {
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	51 if (!valid_digit_char(*buf) && on_num) {
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	52 on_num = 0;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	53 i++;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	54 } else if (valid_digit_char(*buf) && !on_num)
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	55 on_num = 1;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	56 }
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	57
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	58 return buf;
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	59 }
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	60
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	61 void draw_poly(char* buf)
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	62 {
6 b06a7e9cda60 cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 5 diff changeset	63 float c1, c2, c3, f1, f2, f3;
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	64
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	65 buf += 5;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	66
19 4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	67 glPushMatrix();
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	68 glRotatef(cam_ax, 1.0, 0.0, 0.0);
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	69 glRotatef(cam_ay, 0.0, 1.0, 0.0);
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	70 glRotatef(cam_az, 0.0, 0.0, 1.0);
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	71 glTranslatef(cam_x, cam_y, cam_z);
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	72
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	73 glBegin(GL_POLYGON);
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	74 while(1) {
6 b06a7e9cda60 cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 5 diff changeset	75 if (sscanf(buf, "%f %f %f %f %f %f", &c1, &c2, &c3, &f1, &f2, &f3) != 6)
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	76 break;
6 b06a7e9cda60 cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 5 diff changeset	77 glColor3f(c1, c2, c3);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	78 glVertex3f(f1, f2, f3);
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	79 buf = update_ptr(buf);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	80 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	81 glEnd();
19 4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	82
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	83 glPopMatrix();
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	84 }
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	85
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	86 void rot_cam(char* buf)
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	87 {
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	88 float x,y,z;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	89
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	90 buf += 7;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	91
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	92 if (sscanf(buf, "%f %f %f", &x, &y, &z) != 3)
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	93 return;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	94
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	95 cam_ax += x;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	96 cam_ay += y;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	97 cam_az += z;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	98 }
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	99
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	100 void trans_cam(char* buf)
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	101 {
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	102 float x,y,z;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	103
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	104 buf += 9;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	105
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	106 if (sscanf(buf, "%f %f %f", &x, &y, &z) != 3)
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	107 return;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	108
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	109 cam_x += x;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	110 cam_y += y;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	111 cam_z += z;
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	112 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	113
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	114 void __key(int c, int x, int y)
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	115 {
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	116 printf("key pressed: %c, mouse at (%d,%d)\n", c, x, y);
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	117
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	118 switch(c) {
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	119 case GLUT_KEY_LEFT+256:
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	120 write(outfd, "left", 4);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	121 break;
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	122 case GLUT_KEY_RIGHT+256:
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	123 write(outfd, "right", 5);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	124 break;
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	125 case GLUT_KEY_UP+256:
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	126 write(outfd, "up", 2);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	127 break;
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	128 case GLUT_KEY_DOWN+256:
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	129 write(outfd, "down", 4);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	130 break;
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	131 case ' ':
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	132 write(outfd, "space", 5);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	133 break;
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	134 default:
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	135 write(outfd, &c, 1);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	136 break;
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	137 }
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	138 write(outfd, "\n", 1);
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	139 }
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	140
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	141 void key(unsigned char c, int x, int y)
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	142 {
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	143 __key((int)c, x, y);
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	144 }
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	145
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	146 void special(int k, int x, int y)
7 e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	147 {
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	148 __key(k+256, x, y);
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	149 }
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	150
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	151 void timer(int val)
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	152 {
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	153 glutPostRedisplay();
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	154 glutTimerFunc(TIMER_PERIOD, timer, 0);
7 e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	155 }
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	156
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	157 void display(void)
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	158 {
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	159 ssize_t r;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	160
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	161 do {
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	162 if ((ptr) >= (buf + BUF_SIZE))
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	163 break;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	164
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	165 r = read(infd, ptr, 1);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	166
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	167 if ((r == -1) \|\| (r == 0) \|\| (*ptr == '\n')) {
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	168 *ptr = '\0';
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	169 break;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	170 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	171
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	172 ptr += r;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	173 } while(1);
12 43c7ce2fc334 New utility: getline jsipek@huey.fsl.cs.sunysb.edu parents: 11 diff changeset	174 #if 0
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	175 if (strlen(buf)) {
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	176 printf("buf = \"%s\"\n", buf);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	177 fflush(stdout);
d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	178 }
12 43c7ce2fc334 New utility: getline jsipek@huey.fsl.cs.sunysb.edu parents: 11 diff changeset	179 #endif
7 e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	180 if (!strncmp(buf, "CLEAR", 5)) {
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	181 glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
7 e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	182 } else if (!strncmp(buf, "FLUSH", 5)) {
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	183 glFlush();
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	184 glutSwapBuffers();
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	185 } else if (!strncmp(buf, "POLY", 4))
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	186 draw_poly(buf);
19 4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	187 else if (!strncmp(buf, "ROTCAM", 6))
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	188 rot_cam(buf);
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	189 else if (!strncmp(buf, "TRANSCAM", 8))
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	190 trans_cam(buf);
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	191 else if (strlen(buf)) {
7 e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	192 printf("unknown command\n");
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	193 fflush(stdout);
e681fac7212c Added a timer, some cleanup jsipek@huey.fsl.cs.sunysb.edu parents: 6 diff changeset	194 }
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	195
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	196 ptr = buf;
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	197
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	198 frames++;
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	199 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	200
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	201 void init()
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	202 {
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	203 /* set clear color to black */
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	204 glClearColor (0.0, 0.0, 0.0, 0.0);
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	205
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	206 /* set fill color to white */
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	207 glColor3f(1.0, 1.0, 1.0);
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	208
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	209 /* set up standard orthogonal view with clipping */
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	210 /* box as cube of side 2 centered at origin */
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	211 /* This is default view and these statement could be removed */
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	212 glMatrixMode (GL_PROJECTION);
19 4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	213
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	214 //sets up the projection matrix for a perspective transform
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	215 gluPerspective( 90, //view angle
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	216 1.0, //aspect ratio
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	217 0.0, //near clip
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	218 200.0); //far clip
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	219 glMatrixMode(GL_MODELVIEW);
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	220
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	221 /*glLoadIdentity ();
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	222 glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);*/
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	223
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	224 cam_x = 0.0;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	225 cam_y = 0.0;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	226 cam_z = 0.0;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	227 cam_ax = 0.0;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	228 cam_ay = 0.0;
4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	229 cam_az = 0.0;
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	230 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	231
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	232 #define die() __die(__FILE__, __LINE__);
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	233
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	234 void __die(char* f, int l)
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	235 {
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	236 fprintf(stderr, "Error encountered in %s:%d: %s (%d)\n", f, l, strerror(errno), errno);
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	237 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	238
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	239 void goodbye()
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	240 {
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	241 struct timespec end;
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	242 double delta;
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	243
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	244 clock_gettime(CLOCK_REALTIME, &end);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	245
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	246 delta = ((double) end.tv_sec + 1000000000.0/(double)end.tv_nsec)
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	247 - ((double) start.tv_sec + 1000000000.0/(double)start.tv_nsec);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	248
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	249 printf("Displayed %d frames in %.4lf seconds = %.4lf fps\n", frames, delta, frames/delta);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	250
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	251 close(infd);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	252 close(outfd);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	253 }
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	254
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	255 int main(int argc, char** argv)
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	256 {
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	257 frames = 0;
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	258
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	259 unlink(PIPE_IN);
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	260 unlink(PIPE_OUT);
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	261
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	262 if ((buf = (char) malloc(sizeof(char)BUF_SIZE)) == NULL)
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	263 die();
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	264 ptr = buf;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	265
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	266 if (mkfifo(PIPE_IN, 0777) == -1)
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	267 die();
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	268
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	269 if (mkfifo(PIPE_OUT, 0777) == -1)
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	270 die();
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	271
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	272 if ((infd = open(PIPE_IN, O_RDWR \| O_NONBLOCK \| O_NDELAY)) == -1)
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	273 die();
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	274
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	275 if ((outfd = open(PIPE_OUT, O_RDWR \| O_NONBLOCK \| O_NDELAY)) == -1)
88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	276 die();
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	277
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	278 atexit(goodbye);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	279
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	280 glutInit(&argc,argv);
19 4722afb8751c Added rotation and translation Josef "Jeff" Sipek <jeffpc@optonline.net> parents: 12 diff changeset	281 glutInitDisplayMode(GLUT_DEPTH \| GLUT_DOUBLE \| GLUT_RGB);
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	282 glutInitWindowSize(800,800);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	283 glutInitWindowPosition(0,0);
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	284 glutCreateWindow("3D Engine");
9 d325e84a13dd some cleanups/performance improvements jsipek@huey.fsl.cs.sunysb.edu parents: 8 diff changeset	285 glEnable(GL_DEPTH_TEST);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	286 glutDisplayFunc(display);
1 88acf3d645e3 Draws a triangle from sample.scn! jsipek@huey.fsl.cs.sunysb.edu parents: 0 diff changeset	287 glutKeyboardFunc(key);
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	288 glutSpecialFunc(special);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	289 init();
8 640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	290
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	291 clock_gettime(CLOCK_REALTIME, &start);
640a1d1a730d Timer/FPS counter jsipek@huey.fsl.cs.sunysb.edu parents: 7 diff changeset	292
11 55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	293 //glutIdleFunc(idle);
55b7e6aba0ef Fixed key scan code bug jsipek@huey.fsl.cs.sunysb.edu parents: 9 diff changeset	294 glutTimerFunc(TIMER_PERIOD, timer, 0);
0 443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	295 glutMainLoop();
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	296
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	297
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	298 return 0;
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	299 }
443290507ab9 some minimal code jsipek@huey.fsl.cs.sunysb.edu parents: diff changeset	300

Mercurial > 3de

annotate render.c @ 20:ebc55ce699ec