資源簡介
本代碼是通過OpenGL實(shí)行對OFF文件的讀取和對讀取的三維模型添加旋轉(zhuǎn)功能
代碼片段和文件信息
#include
#include
#include
#include
#include
#include
#pragma?comment（lib“glew32.lib“）
const?double?DEFAULT_DELTA?=?0.03;???//旋轉(zhuǎn)偏移量
int?sign?=?1;??????????????????????//控制是順時(shí)針旋轉(zhuǎn)還是逆時(shí)針旋轉(zhuǎn)，1為順時(shí)針旋轉(zhuǎn)。
//矩陣的存儲(chǔ)位置
GLint?matrixLocation;
int?mainWindow;//
int?Xaxis?=?0;
int?Yaxis?=?1;
int?Zaxis?=?2;
int?Axis?=?Xaxis;??????//控制是x軸、y軸、z軸旋轉(zhuǎn)。默認(rèn)是x軸
vec3?Theta（0.0?0.0?0.0）;
//Num_Vertices為頂點(diǎn)的個(gè)數(shù)
const?int?NUM_VERTICES?=?8;????????????
const?vec4?vertexColors[NUM_VERTICES]?=?{
vec4（0.0?0.0?0.0?1.0）??//?Black?
vec4（1.0?0.0?0.0?1.0）??//?Red?
vec4（1.0?1.0?0.0?1.0）??//?Yellow?
vec4（0.0?1.0?0.0?1.0）??//?Green?
vec4（0.0?0.0?1.0?1.0）??//?Blue?
vec4（1.0?0.0?1.0?1.0）??//?Magenta?
vec4（1.0?1.0?1.0?1.0）??//?White?
vec4（0.0?1.0?1.0?1.0）???//?Cyan?
};
int?nVertices?=?0;//頂點(diǎn)數(shù)
int?nFaces?=?0;//面數(shù)
int?nEdges;//邊數(shù)
std::vector?points;????//存放每個(gè)頂點(diǎn)的信息
std::vector?colors;????//存放每個(gè)頂點(diǎn)的顏色信息
std::vector?vertices;??//存放每個(gè)頂點(diǎn)的坐標(biāo)信息
/*
存放每個(gè)頂點(diǎn)的坐標(biāo)和顏色信息
*/
void?storePoints（int?a?int?b?int?c）
{
points.push_back（vertices[a]）;
points.push_back（vertices[b]）;
points.push_back（vertices[c]）;
colors.push_back（vertexColors[a]）;
colors.push_back（vertexColors[b]）;
colors.push_back（vertexColors[c]）;
}
/*
讀取off文件
*/
void?read_off（const?std::string?filename）
{
if?（filename.empty（））?{//如果文件為空，則直接返回
return;
}
std::ifstream?fin;
int?i?=?0;
fin.open（filename）;
std::string?str;
fin?>>?str;?????????????//str的內(nèi)容為OFF
fin?>>?nVertices;????????//頂點(diǎn)數(shù)
fin?>>?nFaces;???????????//面數(shù)
fin?>>?nEdges;???????????//邊數(shù)
for?（i?=?0;?i? {
double?n1?=?0;
double?n2?=?0;
double?n3?=?0;
double?n4?=?0;
fin?>>?n1;??????????????????????????//其坐標(biāo)值有四個(gè)
fin?>>?n2;
fin?>>?n3;
fin?>>?n4;
vec4?new_vec3（n1?n2?n3?n4）;
vertices.push_back（new_vec3）;
}
for?（i?=?0;?i? {
int?n1?=?0;
int?n2?=?0;?????????????????????????//每行的第一個(gè)為頂點(diǎn)數(shù)，
int?n3?=?0;
int?n4?=?0;
fin?>>?n1;
fin?>>?n2;
fin?>>?n3;
fin?>>?n4;
storePoints（n2?n3?n4）;
}
fin.close（）;
}
void?init（）
{
read_off（“cube.off“）;
//?創(chuàng)建頂點(diǎn)數(shù)組對象
GLuint?vao[1];
glGenVertexArrays（1?vao）;
glBindVertexArray（vao[0]）;
//?創(chuàng)建并初始化頂點(diǎn)緩存對象
GLuint?buffer;
glGenBuffers（1?&buffer）;
glBindBuffer（GL_ARRAY_BUFFER?buffer）;
glBufferData（GL_ARRAY_BUFFER?points.size（）?*?sizeof（vec4）?+?colors.size（）?*?sizeof（vec4）
NULL?GL_STATIC_DRAW）;
//?分別讀取數(shù)據(jù)
glBufferSubData（GL_ARRAY_BUFFER?0?points.size（）?*?sizeof（vec4）?&points[0]）;
glBufferSubData（GL_ARRAY_BUFFER?points.size（）?*?sizeof（vec4）?colors.size（）?*?sizeof（vec4）?&colors[0]）;
//?讀取著色器并使用
GLuint?program?=?InitShader（“vshader.glsl“?“fshader.glsl“）;
glUseProgram（program）;
//?從頂點(diǎn)著色器中初始化頂點(diǎn)的位置
GLuint?pLocation?=?glGetAttribLocation（program?“vPosit ?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\
?????目錄???????????0??2016-10-20?22:45??2014150213-歐陽煉均-實(shí)驗(yàn)二\.vs\
?????目錄???????????0??2016-10-20?22:45??2014150213-歐陽煉均-實(shí)驗(yàn)二\.vs\實(shí)驗(yàn)二\
?????目錄???????????0??2016-10-20?22:45??2014150213-歐陽煉均-實(shí)驗(yàn)二\.vs\實(shí)驗(yàn)二\v14\
?????文件???????37888??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\.vs\實(shí)驗(yàn)二\v14\.suo
?????目錄???????????0??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\Debug\
?????文件??????134656??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.exe
?????文件?????1137924??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.ilk
?????文件?????1585152??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.pdb
?????目錄???????????0??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\
?????文件????????1309??2016-10-20?22:45??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二.sln
?????文件????33468416??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二.VC.db
?????目錄???????????0??2016-10-20?22:46??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Common\
?????文件????????2292??2016-09-05?17:17??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Common\InitShader.cpp
?????文件?????????321??2016-10-20?23:02??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\cube.off
?????目錄???????????0??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\
?????文件???????60243??2016-10-20?22:47??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\InitShader.obj
?????文件??????409789??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\main.obj
?????文件??????393514??2016-10-22?16:14??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\main.obj.enc
?????文件??????855040??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\vc140.idb
?????文件??????561152??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\vc140.pdb
?????文件????????1564??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.log
?????目錄???????????0??2016-10-22?20:20??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\
?????文件????????1230??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\CL.command.1.tlog
?????文件???????54012??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\CL.read.1.tlog
?????文件????????1016??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\CL.write.1.tlog
?????文件????????1106??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\li
?????文件????????3690??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\li
?????文件?????????394??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\li
?????文件?????????193??2016-10-22?20:13??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\Debug\實(shí)驗(yàn)二.tlog\實(shí)驗(yàn)二.lastbuildstate
?????文件??????????88??2016-09-16?13:26??2014150213-歐陽煉均-實(shí)驗(yàn)二\實(shí)驗(yàn)二\fshader.glsl
............此處省略9個(gè)文件信息
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