vrml 读取和写入

本学期计算机图形学作业的一部分。

还是采用vrml读取为obj， 和obj写入为vrml。

只能读取最简单的点和面， 其他纹理没写。

#ifndef VRML_H_
#define VRML_H_


#include <stdlib.h>
#include <stdio.h>
#include <string.h>

int vrml_point(FILE *fp, float (*point)[3])
{
	char tmp[256];

	int point_count = 0;

	while(!feof(fp))
	{
		fscanf(fp, "%s", tmp);

		if (!strcmp(tmp, "["))
		{
			fscanf(fp, "%s", tmp);

			while(strcmp(tmp, "]"))
			{			
				point[point_count][0] = atof(tmp);

				fscanf(fp, "%s", tmp);
				point[point_count][1] = atof(tmp);

				fscanf(fp, "%s", tmp);
				point[point_count][2] = atof(tmp);

				point_count++;

				fscanf(fp, "%s", tmp);	
			}

			return point_count;
		}
	}
}

int vrml_face(FILE *fp, int (*face)[3])
{
	char tmp[256];

	int face_count = 0;

	while(!feof(fp))
	{
		fscanf(fp, "%s", tmp);

		if (!strcmp(tmp, "["))
		{
			fscanf(fp, "%s", tmp);

			while(strcmp(tmp, "]"))
			{
				
				face[