cloth2

annotate src/main.cc @ 0:ef0c22554406

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cloth sim test, initial commit
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 11 Jan 2016 16:51:16 +0200
parents
children dc15b741486c
rev   line source
nuclear@0 1 #include <stdio.h>
nuclear@0 2 #include <stdlib.h>
nuclear@0 3 #include <assert.h>
nuclear@0 4 #include <GL/glew.h>
nuclear@0 5 #ifdef __APPLE__
nuclear@0 6 #include <GLUT/glut.h>
nuclear@0 7 #else
nuclear@0 8 #include <GL/glut.h>
nuclear@0 9 #endif
nuclear@0 10 #include "object.h"
nuclear@0 11 #include "cloth.h"
nuclear@0 12
nuclear@0 13 bool init();
nuclear@0 14 void cleanup();
nuclear@0 15 void display();
nuclear@0 16 void idle();
nuclear@0 17 void reshape(int x, int y);
nuclear@0 18 void keyboard(unsigned char key, int x, int y);
nuclear@0 19 void mouse(int bn, int st, int x, int y);
nuclear@0 20 void motion(int x, int y);
nuclear@0 21
nuclear@0 22 float cam_theta, cam_phi, cam_dist = 8;
nuclear@0 23
nuclear@0 24 Cloth cloth;
nuclear@0 25
nuclear@0 26 int main(int argc, char **argv)
nuclear@0 27 {
nuclear@0 28 glutInit(&argc, argv);
nuclear@0 29 glutInitWindowSize(800, 600);
nuclear@0 30 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
nuclear@0 31 glutCreateWindow("foo");
nuclear@0 32
nuclear@0 33 glutDisplayFunc(display);
nuclear@0 34 glutIdleFunc(idle);
nuclear@0 35 glutReshapeFunc(reshape);
nuclear@0 36 glutKeyboardFunc(keyboard);
nuclear@0 37 glutMouseFunc(mouse);
nuclear@0 38 glutMotionFunc(motion);
nuclear@0 39
nuclear@0 40 if(!init()) {
nuclear@0 41 return 1;
nuclear@0 42 }
nuclear@0 43 atexit(cleanup);
nuclear@0 44
nuclear@0 45 glutMainLoop();
nuclear@0 46 }
nuclear@0 47
nuclear@0 48
nuclear@0 49 bool init()
nuclear@0 50 {
nuclear@0 51 glewInit();
nuclear@0 52
nuclear@0 53 glEnable(GL_DEPTH_TEST);
nuclear@0 54 glEnable(GL_CULL_FACE);
nuclear@0 55 //glEnable(GL_LIGHTING);
nuclear@0 56 glEnable(GL_LIGHT0);
nuclear@0 57
nuclear@0 58 cloth.create_rect(32, 32, 10, 10);
nuclear@0 59
nuclear@0 60 Matrix4x4 xform = Matrix4x4(1, 0, 0, 0,
nuclear@0 61 0, 1, 0, 0,
nuclear@0 62 0, 0, 1, 0,
nuclear@0 63 0, 1, 0, 1);
nuclear@0 64 cloth.transform(xform);
nuclear@0 65
nuclear@0 66
nuclear@0 67 return true;
nuclear@0 68 }
nuclear@0 69
nuclear@0 70 void cleanup()
nuclear@0 71 {
nuclear@0 72 }
nuclear@0 73
nuclear@0 74 void display()
nuclear@0 75 {
nuclear@0 76 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0 77
nuclear@0 78 glMatrixMode(GL_MODELVIEW);
nuclear@0 79 glLoadIdentity();
nuclear@0 80 glTranslatef(0, 0, -cam_dist);
nuclear@0 81 glRotatef(cam_phi, 1, 0, 0);
nuclear@0 82 glRotatef(cam_theta, 0, 1, 0);
nuclear@0 83
nuclear@0 84 cloth.draw();
nuclear@0 85
nuclear@0 86 glutSwapBuffers();
nuclear@0 87 assert(glGetError() == GL_NO_ERROR);
nuclear@0 88 }
nuclear@0 89
nuclear@0 90 void idle()
nuclear@0 91 {
nuclear@0 92 glutPostRedisplay();
nuclear@0 93 }
nuclear@0 94
nuclear@0 95 void reshape(int x, int y)
nuclear@0 96 {
nuclear@0 97 glViewport(0, 0, x, y);
nuclear@0 98
nuclear@0 99 glMatrixMode(GL_PROJECTION);
nuclear@0 100 glLoadIdentity();
nuclear@0 101 gluPerspective(50.0, (float)x / (float)y, 0.5, 500.0);
nuclear@0 102 }
nuclear@0 103
nuclear@0 104 void keyboard(unsigned char key, int x, int y)
nuclear@0 105 {
nuclear@0 106 switch(key) {
nuclear@0 107 case 27:
nuclear@0 108 exit(0);
nuclear@0 109 }
nuclear@0 110 }
nuclear@0 111
nuclear@0 112 static bool bnstate[16];
nuclear@0 113 static int prev_x, prev_y;
nuclear@0 114
nuclear@0 115 void mouse(int bn, int st, int x, int y)
nuclear@0 116 {
nuclear@0 117 prev_x = x;
nuclear@0 118 prev_y = y;
nuclear@0 119 bnstate[bn - GLUT_LEFT_BUTTON] = st == GLUT_DOWN;
nuclear@0 120 }
nuclear@0 121
nuclear@0 122 void motion(int x, int y)
nuclear@0 123 {
nuclear@0 124 int dx = x - prev_x;
nuclear@0 125 int dy = y - prev_y;
nuclear@0 126 prev_x = x;
nuclear@0 127 prev_y = y;
nuclear@0 128
nuclear@0 129 if(!dx && !dy) return;
nuclear@0 130
nuclear@0 131 if(bnstate[0]) {
nuclear@0 132 cam_theta += dx * 0.5;
nuclear@0 133 cam_phi += dy * 0.5;
nuclear@0 134
nuclear@0 135 if(cam_phi < -90) cam_phi = -90;
nuclear@0 136 if(cam_phi > 90) cam_phi = 90;
nuclear@0 137 }
nuclear@0 138 if(bnstate[2]) {
nuclear@0 139 cam_dist += dy * 0.1;
nuclear@0 140 if(cam_dist < 0.0) cam_dist = 0.0;
nuclear@0 141 }
nuclear@0 142 }