#include <Windows.h>
#include <stdio.h>
#include <gl/glut.h>
GLUnurbsObj *theNurb;
GLfloat ctlarray[3][2][4] = {0.5, 0.0, -0.5, 1.0, 0.5, 0.0,0.5, 1.0, 0.0, 0.866*0.55, 
	-0.5*0.55, 1.0*0.55, 0.0, 0.866*0.55, 0.5*0.55, 1.0*0.55, -0.5, 0.0, -0.5, 1.0, 
	-0.5, 0.0, 0.5, 1.0};

GLfloat texpts[2][2][2] = {0, 0,0, 1, 1, 0, 1, 1};
GLUquadricObj *theqw;
GLubyte *Iz_RGB;

void file_read(const char *filename) {
	BITMAPFILEHEADER FileHeader;
	BITMAPINFOHEADER InfoHeader;
	FILE *MyFile = fopen(filename, "rb");
	fread(&FileHeader, sizeof(FileHeader), 1, MyFile);
	fread(&InfoHeader, sizeof(InfoHeader), 1, MyFile);
	fseek(MyFile, FileHeader.bfOffBits, SEEK_SET);
	int w = InfoHeader.biWidth;
	int h = InfoHeader.biHeight;
	Iz_RGB = (GLubyte*)malloc(w*h*3);
	fread(Iz_RGB, w*h*3, 1, MyFile);
	fclose(MyFile);
	for (int ii = 0; ii < w * h * 3; ii += 3) {
		GLubyte m1 = Iz_RGB[ii];
		Iz_RGB[ii] = Iz_RGB[ii + 2];
		Iz_RGB[ii + 2] = m1;
	}
}

void init()
{
	glClearColor (0.3, 0, 0.3, 1);
	theNurb = gluNewNurbsRenderer();
	theqw = gluNewQuadric();
	glEnable( GL_DEPTH_TEST);
	gluNurbsProperty (theNurb, GLU_SAMPLING_TOLERANCE, 25.0);
	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexImage2D (GL_TEXTURE_2D, 0, 3, 256, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, Iz_RGB);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
	gluQuadricTexture(theqw, true);
	glEnable(GL_TEXTURE_2D);
	free(Iz_RGB);
}

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(1, 1.0, -1.0, 1.0);
	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, TexP1);
	glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, &texpts[0][0][0]);
	glEnable(GL_MAP2_TEXTURE_COORD_2);
	glutSolidTeapot(0.3);
	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();
}

void main() {
	file_read("C:/Users/11/Desktop/Sparkle_Hot_Pink_Fuchsia_HairFlairs.bmp");
	glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE|GLUT_DEPTH);
	glutInitWindowSize(480, 480);
	glutInitWindowPosition(100, 100);
	glutCreateWindow(" ");
	init();
	glutDisplayFunc(Display);
	glutMainLoop();
}