eleni@0: #include <GL/glew.h>
eleni@0: #include <GL/glut.h>
eleni@0: 
eleni@0: #include <stdio.h>
eleni@0: #include <assert.h>
eleni@0: 
elene@6: #include "volume.h"
eleni@1: 
eleni@0: //static void init(void);
eleni@0: static void display(void);
eleni@0: static void reshape(int x, int y);
eleni@0: static void keyboard(unsigned char key, int x, int y);
eleni@0: static void mouse(int button, int state, int x, int y);
eleni@0: static void motion(int x, int y);
eleni@0: 
eleni@0: static int win_xsz, win_ysz;
eleni@0: 
eleni@1: /////////////////////////////
eleni@1: // debug TODO remove
eleni@1: ////////////////////////////
eleni@1: static bool init();
elene@6: 
elene@6: static Volume *vol;
elene@6: static float cur_z;
eleni@1: 
eleni@0: int main(int argc, char **argv)
eleni@0: {
eleni@0: 	glutInit(&argc, argv);
eleni@0: 	glutInitWindowSize(1280, 720);
eleni@0: 	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
eleni@0: 
eleni@0: 	//TODO parse arguments
eleni@0: 
eleni@0: 	glutCreateWindow("My Colonoscopie OEO!");
eleni@0: 
eleni@0: 	glutDisplayFunc(display);
eleni@0: 	glutReshapeFunc(reshape);
eleni@0: 	glutKeyboardFunc(keyboard);
eleni@0: 	glutMouseFunc(mouse);
eleni@0: 	glutMotionFunc(motion);
eleni@0: 
eleni@0: 	glewInit();
eleni@1: 	if(!init()) {
eleni@1: 		fprintf(stderr, "Failed to initialize La votre Colonoscopie\n");
eleni@1: 		return 1;
eleni@1: 	}
eleni@0: 
eleni@0: 	//call init
eleni@0: 
eleni@0: 	glutMainLoop();
eleni@0: 	return 0;
eleni@0: }
eleni@0: 
eleni@0: void display(void)
eleni@0: {
eleni@0: 	//render
elene@6: 	glBindTexture(GL_TEXTURE_3D, vol->get_texture());
elene@6: 	glEnable(GL_TEXTURE_3D);
eleni@1: 	glBegin(GL_QUADS);
elene@6: 	glTexCoord3f(0, 0, cur_z); glVertex3f(-1, -1, 0);
elene@6: 	glTexCoord3f(0, 1, cur_z); glVertex3f(-1, 1, 0);
elene@6: 	glTexCoord3f(1, 1, cur_z); glVertex3f(1, 1, 0);
elene@6: 	glTexCoord3f(1, 0, cur_z); glVertex3f(1, -1, 0);
eleni@1: 	glEnd();
elene@6: 	glDisable(GL_TEXTURE_3D);
eleni@0: 
eleni@0: 	glutSwapBuffers();
eleni@0: 	assert(glGetError() == GL_NO_ERROR);
eleni@0: }
eleni@0: 
eleni@0: void reshape(int x, int y)
eleni@0: {
eleni@0: 	glViewport(0, 0, x, y);
eleni@0: 	if(x != win_xsz || y != win_ysz) {
eleni@0: 		//TODO raytex_needs_recalc = 1;
eleni@0: 		win_xsz = x;
eleni@0: 		win_ysz = y;
eleni@0: 	}
eleni@0: }
eleni@0: 
eleni@0: void keyboard(unsigned char key, int x, int y)
eleni@0: {
eleni@0: 	switch(key) {
eleni@0: 		case 27:
eleni@0: 			exit(0);
eleni@0: 		default:
eleni@0: 			break;
eleni@0: 	}
eleni@0: }
eleni@0: 
eleni@0: static int prev_x, prev_y;
eleni@0: void mouse(int bn, int state, int x, int y)
eleni@0: {
eleni@0: 	prev_x = x;
eleni@0: 	prev_y = y;
eleni@0: }
eleni@0: 
eleni@0: void motion(int x, int y)
eleni@0: {
eleni@0: 	int dx = x - prev_x;
eleni@0: 	int dy = y - prev_y;
eleni@0: 	prev_x = x;
eleni@0: 	prev_y = y;
elene@6: 
elene@6: 	if(dx != 0) {
elene@6: 		cur_z = (float)x / (float)win_xsz;
elene@6: 		glutPostRedisplay();
elene@6: 	}
eleni@0: }
eleni@1: 
eleni@1: bool init()
eleni@1: {
elene@6: 	vol = new Volume;
elene@6: 	if(!vol->load("data/test1.vol")) {
elene@6: 		fprintf(stderr, "Failed to load test1.vol");
eleni@1: 		return false;
eleni@1: 	}
elene@6: 	cur_z = 0.5;
eleni@1: 
eleni@1: 	return true;
eleni@1: }