LINE PROGRAMS
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67 		//===============================================//
// Title : 3D Object in OpenGL
// Programmer : V R E M P I R E
// Date : Wednesday, February 1, 2006
//===============================================//

#include <stdio.h>
#include <gl/glut.h>

GLdouble V0[] = { 0.0, 0.0, 0.0};
GLdouble V1[] = { 1.0f, 0.0, 0.0};
GLdouble V2[] = { 1.0f, 1.0f, 0.0};
GLdouble V3[] = { 0.0, 1.0f, 0.0};
GLdouble V4[] = { 0.0, 0.0, -1.0f};
GLdouble V5[] = { 1.0f, 0.0, -1.0f};
GLdouble V6[] = { 1.0f, 1.0f, -1.0f};
GLdouble V7[] = { 0.0, 1.0f, -1.0f};

void Display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 
    glLoadIdentity();
    gluLookAt(3.0, 2.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
    glColor3f(0.0, 1.0, 0.0);

    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

    glBegin(GL_QUADS);
        glVertex3dv(V0); glVertex3dv(V1); glVertex3dv(V2); glVertex3dv(V3);        // Surface 1
        glVertex3dv(V1); glVertex3dv(V5); glVertex3dv(V6); glVertex3dv(V2);        // Surface 2
        glVertex3dv(V5); glVertex3dv(V4); glVertex3dv(V7); glVertex3dv(V6);        // Surface 3
        glVertex3dv(V4); glVertex3dv(V0); glVertex3dv(V3); glVertex3dv(V7);        // Surface 4
        glVertex3dv(V3); glVertex3dv(V2); glVertex3dv(V6); glVertex3dv(V7);        // Surface 5
        glVertex3dv(V0); glVertex3dv(V4); glVertex3dv(V5); glVertex3dv(V1);        // Surface 6
    glEnd();

    glutSwapBuffers();
}

void Init(void)
{
    glClearColor(0.0, 0.0, 0.0, 0.0);
}

void Resize(int width, int height)
{
    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60.0, width/height, 0.1, 1000.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}

int main(int argc, char **argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
    glutInitWindowSize(400, 400);
    glutInitWindowPosition(200, 200);
    glutCreateWindow("3D Object in OpenGL");
    Init();
    glutDisplayFunc(Display);
    glutReshapeFunc(Resize);
    glutMainLoop();
    return 0;
}