文本文件（txt或者ttt格式）数据导入OpenGL中绘制花房子

文本文件（txt或者ttt格式）数据导入OpenGL中绘制花房子。

使用“85-84hg.ttt”文件实现如下效果： 

经过一步一步的做法，实现了。

没有实现最终的贴图的效果，现公开源代码，请各位朋友帮忙一起解决，一起学习。 

#include 
#include 
#include 
using namespace std;
static int Mpoint,Ntri;
static GLfloat theta[] = {0.0,0.0,0.0};
static GLint axis = 2;
static GLdouble viewer[]= { 539350.0,378520.0,-500.0};
static GLfloat ta[] = { 0.2,0.2,-1.0 };
struct point
{
	GLdouble x,y,z,w;
};

struct trangle
{
	int a,b,c,d;
};

void load()
{
	int i, j,flag,t,mm,m,n,s;
	GLdouble k;
	ifstream in;
	//in.open("gh.txt",ios::in);
	//Mpoint = 198;
	//in.open("result.txt", ios::in);
	//Mpoint = 16;
	in.open("85-84hg.ttt",ios::in);
	Mpoint = 3720;

	point *points=new point [Mpoint];
	k = 1.0;
	t = 364;
	mm = 0;
	m = 0;
	n = 0;
	while (t>0)
	{
		for (i = m, j = n; i < Mpoint; i++)
		{
			in >> points[j].x;
			if (points[j].x == k)
			{
				k++;
				continue;
			}
			if (points[j].x == 0)
			{
				//i++;
				//in >> points[i].w;
				t--;
				mm = 1;
				break;
			}
			in >> points[j].y;
			in >> points[j].z;
			in >> points[j].w;
			j++;
		}
		
		flag = j;
		glPolygonMode(GL_FRONT, GL_FILL);
		glBegin(GL_POLYGON);
		//glBegin(GL_LINES);
		for (s = n;s < flag; s++)
		{
			glColor3f(0.0, 1.0, 1.0);
			glVertex3f(points[s].x, points[s].y, points[s].z);
			//glVertex3f(points[j].x,points[j].y,points[j].z);
			//glVertex3f(points[j].x,points[j].y,points[j].z);
			//printf("%lf %lf %lf\n", points[s].x, points[s].y, points[s].z);
		}
		//glEnd();
		glBegin(GL_POLYGON);
		//glBegin(GL_LINES);
		for (s = n; s < flag; s++)
		{
			glColor3f(0.4,0.6, 0.7);
			glVertex3f(points[s].x, points[s].y, points[s].z + points[s].w);
			//glVertex3f(points[j].x,points[j].y,points[j].z);
			//glVertex3f(points[j].x,points[j].y,points[j].z);
			//printf("%lf %lf %lf\n", points[s].x, points[s].y, points[s].z);
		}
		glEnd();
		//glPolygonMode(GL_FRONT, GL_FILL);
		glBegin(GL_POLYGON);
		//glBegin(GL_LINES);
		for (s = n; s < flag; s++)
		{
			glColor3f(0.6, 0.3, 0.5);
			glVertex3f(points[s].x, points[s].y, points[s].z);
			glVertex3f(points[s].x , points[s].y, points[s].z + points[s].w);
			//glVertex3f(points[j].x,points[j].y,points[j].z);
			//glVertex3f(points[j].x,points[j].y,points[j].z);
			//printf("%lf %lf %lf\n", points[s].x, points[s].y, points[s].z);
		}
		glEnd();
			mm = 0;
			m = i;
			n = j;
		
	}
	in.close();
	delete[] points;

}


void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glLoadIdentity();
	gluLookAt(viewer[0], viewer[1], viewer[2], 538900.0, 377500.0, 0.0, ta[0], ta[1], ta[2]);
	glRotatef(theta[0], 1.0, 0.0, 0.0);
	glRotatef(theta[1], 0.0, 1.0, 0.0);
	glRotatef(theta[2], 0.0, 0.0, 1.0);
	//glScalef(5.0,5.0,5.0);//太小了 就放大了5倍
    load();
    glFlush();
	glutSwapBuffers();
}

void mouse(int btn, int state, int x, int y)
{
	if(btn==GLUT_LEFT_BUTTON && state == GLUT_DOWN) axis = 0;
	if(btn==GLUT_MIDDLE_BUTTON && state == GLUT_DOWN) axis = 1;
	if(btn==GLUT_RIGHT_BUTTON && state == GLUT_DOWN) axis = 2;
	theta[axis] += 0.01;
	if( theta[axis] > 360.0 ) 
		theta[axis] -= 360.0;

	//glScalef(5.0,5.0,5.0);//太小了 就放大了5倍
 	display();
}

void keys(unsigned char key, int x, int y)
{
	if(key == 'x') viewer[0]-= 10.0;
	if(key == 'X') viewer[0]+= 10.0;
	if(key == 'y') viewer[1]-= 10.0;
	if(key == 'Y') viewer[1]+= 10.0;
	if(key == 'z') viewer[2]-= 10.0;
	if(key == 'Z') viewer[2]+= 10.0;

	if (key == 'q') ta[0] -= 0.1;
	if (key == 'Q') ta[0] += 0.1;
	if (key == 'w') ta[1] -= 0.1;
	if (key == 'W') ta[1] += 0.1;
	if (key == 'e') ta[2] -= 0.1;
	if (key == 'E') ta[2] += 0.1;

	display();
}

void myReshape(int w, int h)
{
	glViewport(0, 0, w, h);
	glMatrixMode(GL_PROJECTION); 
	glLoadIdentity();
	//if(w<=h) glFrustum(-2.0, 20.0, -2.0 * (GLfloat) h/ (GLfloat) w, 
	//	2.0* (GLfloat) h / (GLfloat) w, 2.0, 20.0);
	//else glFrustum(-2.0, 20.0, -2.0 * (GLfloat) w/ (GLfloat) h, 
	//	2.0* (GLfloat) w / (GLfloat) h, 2.0, 20.0);
	//glFrustum(537100, 5410000, -2.0 * (GLfloat)w / (GLfloat)h,
	//		2.0* (GLfloat) w / (GLfloat) h, 10, 1800);
	//gluLookAt(10, 10, 20, 0.0, 0.0, -1.0, 0.0, 1.0, 0.0);
	gluPerspective(60.0, (GLfloat)w / (GLfloat)h, 50, 2500.0);
	//glTranslatef(0, 0, 5);
	//glFrustum(0.0, 1000.0, 0.0, 1000.0, 2.0, 800.0);
	//glOrtho(537100, 539800, 376400, 377900, 10, 8000);

	glMatrixMode(GL_MODELVIEW);
}

void main(int argc, char **argv)
{
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
	glutInitWindowSize(800, 800);
	glutCreateWindow("fangzi");
	glEnable(GL_DEPTH_TEST);
	glutReshapeFunc(myReshape);
	glutDisplayFunc(display);
	glutMouseFunc(mouse);
	glutKeyboardFunc(keys);
	glutMainLoop();
}