nuclear@0: #include <stdio.h>
nuclear@0: #include <stdlib.h>
nuclear@0: #include <assert.h>
nuclear@0: #include <GL/glew.h>
nuclear@0: #ifdef __APPLE__
nuclear@0: #include <GLUT/glut.h>
nuclear@0: #else
nuclear@0: #include <GL/glut.h>
nuclear@0: #endif
nuclear@0: #include "object.h"
nuclear@0: #include "cloth.h"
nuclear@0: 
nuclear@0: bool init();
nuclear@0: void cleanup();
nuclear@0: void display();
nuclear@0: void idle();
nuclear@0: void reshape(int x, int y);
nuclear@0: void keyboard(unsigned char key, int x, int y);
nuclear@0: void mouse(int bn, int st, int x, int y);
nuclear@0: void motion(int x, int y);
nuclear@0: 
nuclear@1: float cam_theta, cam_phi = 25, cam_dist = 10;
nuclear@0: 
nuclear@0: Cloth cloth;
nuclear@0: 
nuclear@0: int main(int argc, char **argv)
nuclear@0: {
nuclear@0: 	glutInit(&argc, argv);
nuclear@0: 	glutInitWindowSize(800, 600);
nuclear@0: 	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
nuclear@0: 	glutCreateWindow("foo");
nuclear@0: 
nuclear@0: 	glutDisplayFunc(display);
nuclear@0: 	glutIdleFunc(idle);
nuclear@0: 	glutReshapeFunc(reshape);
nuclear@0: 	glutKeyboardFunc(keyboard);
nuclear@0: 	glutMouseFunc(mouse);
nuclear@0: 	glutMotionFunc(motion);
nuclear@0: 
nuclear@0: 	if(!init()) {
nuclear@0: 		return 1;
nuclear@0: 	}
nuclear@0: 	atexit(cleanup);
nuclear@0: 
nuclear@0: 	glutMainLoop();
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: bool init()
nuclear@0: {
nuclear@0: 	glewInit();
nuclear@0: 
nuclear@0: 	glEnable(GL_DEPTH_TEST);
nuclear@0: 	glEnable(GL_CULL_FACE);
nuclear@0: 	//glEnable(GL_LIGHTING);
nuclear@0: 	glEnable(GL_LIGHT0);
nuclear@0: 
nuclear@1: 	cloth.create_rect(4, 4, 10, 10);
nuclear@0: 
nuclear@0: 	Matrix4x4 xform = Matrix4x4(1, 0, 0, 0,
nuclear@0: 								0, 1, 0, 0,
nuclear@0: 								0, 0, 1, 0,
nuclear@1: 								0, 1, 1, 1);
nuclear@0: 	cloth.transform(xform);
nuclear@1: 	cloth.set_mass(0.1);
nuclear@1: 	cloth.set_spring_constant(0.1);
nuclear@1: 	cloth.set_gravity(Vector3(0, -0.1, 0));
nuclear@1: 	cloth.set_damping(0.1);
nuclear@0: 
nuclear@0: 
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void cleanup()
nuclear@0: {
nuclear@0: }
nuclear@0: 
nuclear@0: void display()
nuclear@0: {
nuclear@1: 	static unsigned int prev_upd;
nuclear@1: 	unsigned int msec = glutGet(GLUT_ELAPSED_TIME);
nuclear@1: 
nuclear@1: 	if(!prev_upd) prev_upd = msec;
nuclear@1: 	float dt = (msec - prev_upd) / 1000.0f;
nuclear@1: 
nuclear@1: 	cloth.step(dt);
nuclear@1: 
nuclear@0: 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0: 
nuclear@0: 	glMatrixMode(GL_MODELVIEW);
nuclear@0: 	glLoadIdentity();
nuclear@0: 	glTranslatef(0, 0, -cam_dist);
nuclear@0: 	glRotatef(cam_phi, 1, 0, 0);
nuclear@0: 	glRotatef(cam_theta, 0, 1, 0);
nuclear@0: 
nuclear@0: 	cloth.draw();
nuclear@0: 
nuclear@0: 	glutSwapBuffers();
nuclear@0: 	assert(glGetError() == GL_NO_ERROR);
nuclear@0: }
nuclear@0: 
nuclear@0: void idle()
nuclear@0: {
nuclear@0: 	glutPostRedisplay();
nuclear@0: }
nuclear@0: 
nuclear@0: void reshape(int x, int y)
nuclear@0: {
nuclear@0: 	glViewport(0, 0, x, y);
nuclear@0: 
nuclear@0: 	glMatrixMode(GL_PROJECTION);
nuclear@0: 	glLoadIdentity();
nuclear@0: 	gluPerspective(50.0, (float)x / (float)y, 0.5, 500.0);
nuclear@0: }
nuclear@0: 
nuclear@0: void keyboard(unsigned char key, int x, int y)
nuclear@0: {
nuclear@0: 	switch(key) {
nuclear@0: 	case 27:
nuclear@0: 		exit(0);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: static bool bnstate[16];
nuclear@0: static int prev_x, prev_y;
nuclear@0: 
nuclear@0: void mouse(int bn, int st, int x, int y)
nuclear@0: {
nuclear@0: 	prev_x = x;
nuclear@0: 	prev_y = y;
nuclear@0: 	bnstate[bn - GLUT_LEFT_BUTTON] = st == GLUT_DOWN;
nuclear@0: }
nuclear@0: 
nuclear@0: void motion(int x, int y)
nuclear@0: {
nuclear@0: 	int dx = x - prev_x;
nuclear@0: 	int dy = y - prev_y;
nuclear@0: 	prev_x = x;
nuclear@0: 	prev_y = y;
nuclear@0: 
nuclear@0: 	if(!dx && !dy) return;
nuclear@0: 
nuclear@0: 	if(bnstate[0]) {
nuclear@0: 		cam_theta += dx * 0.5;
nuclear@0: 		cam_phi += dy * 0.5;
nuclear@0: 
nuclear@0: 		if(cam_phi < -90) cam_phi = -90;
nuclear@0: 		if(cam_phi > 90) cam_phi = 90;
nuclear@0: 	}
nuclear@0: 	if(bnstate[2]) {
nuclear@0: 		cam_dist += dy * 0.1;
nuclear@0: 		if(cam_dist < 0.0) cam_dist = 0.0;
nuclear@0: 	}
nuclear@0: }