include iostream include OpenGL gl include OpenGL glu include GLUT glu

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#include <iostream>
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#include <GLUT/glut.h>
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, 1.0 * 0.55 },
{ 0.0, 0.866 * 0.55, 0.3 * 0.55, 1.0 * 0.55 }
},
{
{ -0.5, 0.0, -0.3, 1.0 },
{ -0.5, 0.0, 0.3, 1.0 }
}
};
GLfloat TexI[] = {
10, 0, 0, 10
};
GLUnurbsObj* theNurb;
void init() {
glClearColor(0.5, 0.75, 0.75, 1);
theNurb = gluNewNurbsRenderer();
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, 0.0, 0.0, 1.0, 1.0, 1.0 };
GLfloat knot1[] = { 0.0, 0.0, 1.0, 1.0 };
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glRotatef(0.1, 1.0, 1.0, 1.0);
glColor3f(0.5, 0.5, 0.5);
glEnable(GL_TEXTURE_GEN_S);
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
gluBeginSurface(theNurb);
gluNurbsSurface(theNurb,
6, knot,
4, knot1,
2 * 4,
4,
&ctlarray[0][0][0],
3, 2,
GL_MAP2_VERTEX_4);
gluEndSurface(theNurb);
glutPostRedisplay();
glutSwapBuffers();
}
int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(480, 480);
glutInitWindowPosition(100, 100);
glutCreateWindow("LOL");
init();
glutDisplayFunc(Display);
glutMainLoop();
}