#include <GL/glut.h>
#include <math.h>

void init ()
{
    glClearColor (1.0, 1.0, 1.0, 0.0);
    glMatrixMode (GL_PROJECTION);
    glLoadIdentity ( );
    glOrtho(-400, 400, -400, 400,-500,500);
    glMatrixMode (GL_MODELVIEW);
    glLoadIdentity ( );
}

void rectFace (GLint vert1, GLint vert2, GLint vert3, GLint vert4)
{
    GLint bowVertices [6][3] = {{40.0, 0.0, 10.0}, {40.0, 0.0, -30.0}, {40.0, -20.0, -10.0}, {0.0, 0.0, 0.0}, {0.0, 0.0, -20.0}, {0.0, -20.0, -10.0}};
    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
    glBegin(GL_LINE_LOOP);
    glVertex3iv(bowVertices[vert1]);
    glVertex3iv(bowVertices[vert2]);
    glVertex3iv(bowVertices[vert3]);
    glVertex3iv(bowVertices[vert4]);
    glEnd();
}

void triFace (GLint vert1, GLint vert2, GLint vert3)
{
    GLint bowVertices [6][3] = {{40.0, 0.0, 10.0}, {40.0, 0.0, -30.0}, {40.0, -20.0, -10.0}, {0.0, 0.0, 0.0}, {0.0, 0.0, -20.0}, {0.0, -20.0, -10.0}};
    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
    glBegin(GL_LINE_LOOP);
    glVertex3iv(bowVertices[vert1]);
    glVertex3iv(bowVertices[vert2]);
    glVertex3iv(bowVertices[vert3]);
    glEnd();
}

void bow ()
{
    triFace(3, 2, 1);
    rectFace(6, 3, 1, 4);
    rectFace(5, 2, 3, 6);
    rectFace(4, 1, 2, 5);
    triFace(4, 5, 6);
}

void boat ()
{
    //create base (2 triangular prisms)
    bow();
    //add piece to deck
    //add 2 pieces onto deck piece
    //add radio tower on left of two pieces
    //add antenna to radio tower
}

void draw ()
{
    glClear (GL_COLOR_BUFFER_BIT);
    glColor3f(0.0,0.0,0.0);
    glViewport (0, 0, 800, 600);
    //water
    //boat
    boat();
    //opera house
    glutSwapBuffers();
}

void keyboard (unsigned char key, int x, int y)
{
    switch (key)
        {
    case 'x':
    case 'X':
        glRotatef(10.0,1.0,0.0,0.0);
        glutPostRedisplay();
        break;
    case 'y':
    case 'Y':
        glRotatef(10.0,0.0,1.0,0.0);
        glutPostRedisplay();
        break;
    case 'i':
    case 'I':
        glLoadIdentity();
        glutPostRedisplay();
        break;
    case 27:
        exit(0);
        break;
    }
}
void main (int argc, char **argv)
{
    glutInit (&argc, argv);
    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
    glutInitWindowPosition (0, 0);
    glutInitWindowSize (800, 600);
    glutCreateWindow ("Assignment 2");

    init ( );

    glutDisplayFunc (draw);
    glutKeyboardFunc(keyboard);
    glutMainLoop ( );
}