#include <Windows.h>
#include <cstdio>

#include <gl/glut.h>


using namespace std;

GLfloat ctlarray[3][2][4] = {0.5, 0.0, -0.3, 1.0,
                             0.5, 0.0, 0.3, 1.0,
                             0.0, 0.866*0.55, -0.3 * 0.55, 0.55,
                             0.0, 0.866*0.55, 0.3 * 0.55, 0.55,
                             -0.5, 0.0, -0.3, 1.0,
                             -0.5, 0.0, 0.3, 1.0};

GLfloat TexP[] = { 1, 0, 0, 0};
GLfloat TexP1[] = {0, 1, 0, 0};
GLfloat TexP2[] = {0, 0, 1, 0};
GLubyte TexI[] = {255, 0, 0, 
                  255, 0, 0, 
                  255, 255, 0, 
                  255, 255, 0, 
                  0, 255, 0, 
                  0, 255, 0,
                  0, 0, 255, 
                  0, 0, 255};

GLfloat texpts[2][2][2] = {0, 0, 0, 2, 2, 0, 2, 2};
GLUnurbsObj* theNurb;
GLUquadricObj* theqw;

void init(){
    glClearColor(0.5, 0.75, 0.75, 1);
    theNurb = gluNewNurbsRenderer();
    theqw = gluNewQuadric();
    glEnable(GL_DEPTH_TEST);
    gluNurbsProperty(theNurb, GLU_SAMPLING_TOLERANCE, 25.0);
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
    glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexImage1D(GL_TEXTURE_1D, 0, 3, 8, 0, GL_RGB, GL_UNSIGNED_BYTE, TexI);
    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
    glEnable(GL_TEXTURE_1D);
}

void display() {
    GLfloat knot[] = {0, 0, 0, 1, 1, 1};
    GLfloat knot1[] = {0, 0, 1, 1};
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glRotatef(1, 1, 1, 1);
    glColor3f(1, 0, 0);
    glEnable(GL_TEXTURE_GEN_S);
    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
    glTexGenfv(GL_S, GL_OBJECT_PLANE, TexP2);
    gluSphere(theqw, 0.3, 50, 50);
    gluBeginSurface(theNurb);
    gluNurbsSurface(theNurb, 
                    6, knot, 
                    4, knot1,
                    8, 4,
                    &ctlarray[0][0][0],
                    3, 2,
                    GL_MAP2_VERTEX_4);
    gluEndSurface(theNurb);
    glutPostRedisplay();
    glutSwapBuffers();
}

int main() {
    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(720, 1280);
    glutInitWindowPosition(200, 200);
    glutCreateWindow("Title");
    init();
    glutDisplayFunc(display);
    glutMainLoop();
    return 0;
}