//?OpenglDrawPoints.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
using?namespace?std;

typedef?struct?tagPoint3D
{
	GLfloat?x;
	GLfloat?y;
	GLfloat?z;
}Point3D;

const?float?PI?=?3.141592543f;

std::vector?vec_pts;

GLfloat?eyeZ;

GLfloat?centerX?centerY?centerZ;

GLfloat?fWidth?fHeight;

GLfloat?halfWidth?halfHeight;

GLfloat?translateX?translateY;

GLfloat?rotX?rotY;

GLfloat?downPtX?downPtY;

bool?leftBtnDown;?GLfloat?tempEyeZ;

GLuint?arb;

GLuint?pt3DNum;

PFNGLGENBUFFERSARBPROC?glGenBuffersARB?=?0;
PFNGLBINDBUFFERARBPROC?glBindBufferARB?=?0;
PFNGLBUFFERDATAARBPROC?glBufferDataARB?=?0;
PFNGLDELETEBUFFERSARBPROC?glDeleteBuffersARB?=?0;

bool?readFile（）
{
	string?filePath;
	cout?<	cin?>>?filePath;

	if?（-1?==?filePath.find（‘\\‘））
	{
		char?path[256];
		GetModuleFileName（NULL?path?256）;
		int?length?=?strlen（path）;
		char*?temp?=?path?+?length;
		while?（temp[0]?!=?‘\\‘）
		{
			temp--;
		}
		temp[0]?=?0;

		filePath.insert（0?“\\“）;
		filePath.insert（0?path）;
		filePath?+=?“.txt“;
		//ifstream?in（strcat（path?“\\PointsXYZ_201506151741.txt“））;
	}

	ifstream?in（filePath.c_str（））;
	if?（!in）
	{
		printf（“讀取文件失敗!“）;
		return?false;
	}

	//FILE*?file?=?fopen（filePath.c_str（）?“r“）;
	//if?（file?==?NULL）
	//{
	//	printf（“讀取文件失敗!“）;
	//	return?false;
	//}

	char?buf[80];
	float?a?b?c;
	float?minX?=?0.0f?maxX?=?0.0f?minY?=?0.0f?maxY?=?0.0f?minZ?=?0.0f?maxZ?=?0.0f;
	int?index?=?0;
	while?（!in.eof（））
	//while?（!feof（file））
	{
		//fscanf（file?“%f?%f?%f“?&a?&b?&c）;
		in.getline（buf?80?‘\n‘）;
		sscanf（buf?“%f?%f?%f“?&a?&b?&c）;
		Point3D?pt;
		pt.x?=?a;
		pt.y?=?b;
		pt.z?=?c;
		if（eyeZ			eyeZ=fabs（pt.z）;
		if?（pt.x?			minX?=?pt.x;
		if?（pt.x?>?maxX）
			maxX?=?pt.x;
		if?（pt.y?			minY?=?pt.y;
		if?（pt.y?>?maxY）
			maxY?=?pt.y;
		//if?（pt.z?		//	minZ?=?pt.z;
		//if?（pt.z?>?maxZ）
		//	maxZ?=?pt.z;
		//minX?+=?pt.x;
		//minY?+=?pt.y;
		minZ?+=?pt.z;
		vec_pts.push_back（pt）;
		index?=?0;
	}
	in.close（）;
	//fclose（file）;

	centerX?=?（maxX?+?minX）/2;
	centerY?=?（maxY?+?minY）/2;
	//centerZ?=?（maxZ?+?minZ）/2;
	//centerX?=?minX/vec_pts.size（）;
	//centerY?=?minY/vec_pts.size（）;
	centerZ?=?minZ/vec_pts.size（）;

	halfWidth?=?fabs（maxX）?>?fabs（minX）???fabs（maxX）?:?fabs（minX）;
	halfHeight?=?fabs（maxY）?>?fabs（minY）???fabs（maxY）?:?fabs（minY）;

	pt3DNum?=?vec_pts.size（）;
	Point3D*?pData?=?new?Point3D[pt3DNum];
	for?（int?i=0;?i	{
		pData[i].x?=?vec_pts[i].x;
		pData[i].y?=?vec_pts[i].y;
		pData[i].z?=?vec_pts[i].z;
	}

	glGenBuffersARB?=?（PFNGLGENBUFFERSARBPROC）wglGetProcAddress（“glGenBuffersARB“）;
	glB

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????127488??2015-08-05?09:24??glDrawPointCloud\Debug\glDrawPointCloud.exe

?????文件???????1131??2015-08-05?09:23??glDrawPointCloud\Debug\glDrawPointCloud.exp

?????文件?????775852??2015-08-05?09:24??glDrawPointCloud\Debug\glDrawPointCloud.ilk

?????文件???????2466??2015-08-05?09:23??glDrawPointCloud\Debug\glDrawPointCloud.lib

?????文件????1362944??2015-08-05?09:24??glDrawPointCloud\Debug\glDrawPointCloud.pdb

?????文件????1155165??2015-07-08?11:39??glDrawPointCloud\Debug\rabbit.txt

?????文件???????3607??2015-08-05?09:28??glDrawPointCloud\glDrawPointCloud\glDrawPointCloud.vcxproj

?????文件??????11864??2015-08-05?11:22??glDrawPointCloud\glDrawPointCloud\main.cpp

?????文件???37683200??2015-08-05?11:23??glDrawPointCloud\glDrawPointCloud.sdf

?????文件????????915??2015-08-03?15:00??glDrawPointCloud\glDrawPointCloud.sln

????..A..H.?????37376??2015-08-05?11:23??glDrawPointCloud\glDrawPointCloud.v11.suo

?????文件??????22528??2015-08-05?11:23??glDrawPointCloud\Release\glDrawPointCloud.exe

?????文件???????1133??2015-08-05?11:23??glDrawPointCloud\Release\glDrawPointCloud.exp

?????文件???????2466??2015-08-05?11:23??glDrawPointCloud\Release\glDrawPointCloud.lib

?????文件?????625664??2015-08-05?11:23??glDrawPointCloud\Release\glDrawPointCloud.pdb

?????目錄??????????0??2015-08-05?11:24??glDrawPointCloud\Debug

?????目錄??????????0??2015-08-05?11:23??glDrawPointCloud\glDrawPointCloud

?????目錄??????????0??2015-08-05?11:24??glDrawPointCloud\Release

?????目錄??????????0??2015-08-05?11:23??glDrawPointCloud

-----------?---------??----------?-----??----

?????????????41813799????????????????????19