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  • opengl 帮助文档

    Name glScalef , glScalex - multiply the current matrix by a general scaling matrix C Specification void glScalef(GLfloat x, GLfloat y, GLfloat z) void glScalex(GLfixed x, GLfixed y, GLfixed z)Parameters x, y, z Specify scale factors along the x, y, and z axes, respectively. Description glScale produces a nonuniform scaling along the x, y, and z axes. The three parameters indicate the desired scale factor along each of the three axes. The current matrix (see glMatrixMode) is multiplied by this scale matrix, and the product replaces the current matrix as if glScale were called with the following matrix as its argument: ( x 0 0 0 0 y 0 0 0 0 z 0 0 0 0 1 ) If the matrix mode is either GL_MODELVIEW or GL_PROJECTION, all objects drawn after glScale is called are scaled. Use glPushMatrix and glPopMatrix to save and restore the unscaled coordinate system. Notes If scale factors other than 1 are applied to the modelview matrix and lighting is enabled, lighting often appears wrong. In that case, enable automatic normalization of normals by calling glEnable with the argument GL_NORMALIZE. Copyright Copyright © 2003 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/. See Also glEnable, glMatrixMode, glMultMatrix, glPushMatrix, glRotate, glTranslate

    2012-05-25
    15
  • SQL语句大全大全(经典珍藏版)

    SQL语句大全 --语 句 功 能 --数据操作 SELECT --从数据库表中检索数据行和列 INSERT --向数据库表添加新数据行 DELETE --从数据库表中删除数据行 UPDATE --更新数据库表中的数据 -数据定义 CREATE TABLE --创建一个数据库表 DROP TABLE --从数据库中删除表 ALTER TABLE --修改数据库表结构 CREATE VIEW --创建一个视图 ......

    2012-05-25
    3
  • OpenGl 库

    非常全的opengl库,初学的同学不要错过哦

    2012-05-19
    9
  • Picturedat读取dat绘图

    opengl写的读取dat文件,然后绘制图形。并且实现了旋转、缩放、平移等功能。

    2012-05-19
    9
  • MyRobot 机器人

    opengl写的一个人运动,并配有背景音乐,音乐播放采用多线程。

    2012-05-19
    5
  • Sphere 球纹理映射

    opengl的球面纹理映射,可以平移,缩放,旋转

    2012-05-19
    9
  • Opengl齿轮运动

    OpenGl的动画,是两个啮合齿轮的运动。对于初学OpenGl动画的同学有一定的学习价值。对于研究齿轮机械运动的同学,你们有福了。

    2012-05-19
    18
  • DES代码 含界面 DES代码

    // DES.cpp: implementation of the DES class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "codeDlg.h" #include "DES.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// DES::DES() { } DES::~DES() { } // initial permutation IP const static char IP_Table[64] = { 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8, 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7 }; // final permutation IP^-1 const static char IPR_Table[64] = { 40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29, 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25 }; // expansion operation matrix static const char E_Table[48] = { 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1 }; // 32-bit permutation function P used on the output of the S-boxes const static char P_Table[32] = { 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25 }; // permuted choice table (key) const static char PC1_Table[56] = { 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36, 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4 }; // permuted choice key (table) const static char PC2_Table[48] = { 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48, 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32 }; // number left rotations of pc1 const static char LOOP_Table[16] = { 1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1 }; // The (in)famous S-boxes const static char S_Box[8][4][16] = { // S1 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0, 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13, // S2 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15, 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9, // S3 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7, 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12, // S4 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4, 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14, // S5 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14, 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3, // S6 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6, 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13, // S7 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2, 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12, // S8 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8, 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 }; ////////////////////////////////////////////////////////////////////////// typedef bool (*PSubKey)[16][48]; ////////////////////////////////////////////////////////////////////////// static void SDES(char Out[8], char In[8], const PSubKey pSubKey, bool Type);//标准DES加/解密 static void SetKey(const char* Key, int len);// 设置密钥 static void SetSubKey(PSubKey pSubKey, const char Key[8]);// 设置子密钥 static void F_func(bool In[32], const bool Ki[48]);// f 函数 static void S_func(bool Out[32], const bool In[48]);// S 盒代替 static void Transform(bool *Out, bool *In, const char *Table, int len);// 变换 static void Xor(bool *InA, const bool *InB, int len);// 异或 static void RotateL(bool *In, int len, int loop);// 循环左移 static void ByteToBit(bool *Out, const char *In, int bits);// 字节组转换成位组 static void BitToByte(char *Out, const bool *In, int bits);// 位组转换成字节组 ////////////////////////////////////////////////////////////////////////// static bool SubKey[2][16][48];// 16圈子密钥 static bool Is3DES;// 3次DES标志 static char Tmp[256], deskey[16]; ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////// // Code starts from Line 130 ////////////////////////////////////////////////////////////////////////// void SetKey(const char* Key, int len) { memset(deskey, 0, 16); memcpy(deskey, Key, len>16?16:len); SetSubKey(&SubKey[0], &deskey[0]); Is3DES = len>8 ? (SetSubKey(&SubKey[1], &deskey[8]), true) : false; } void SDES(char Out[8], char In[8], const PSubKey pSubKey, bool Type) { static bool M[64], tmp[32], *Li=&M[0], *Ri=&M[32]; ByteToBit(M, In, 64); Transform(M, M, IP_Table, 64); if( Type == ENCRYPT ){ for(int i=0; i<16; ++i) { memcpy(tmp, Ri, 32); F_func(Ri, (*pSubKey)[i]); Xor(Ri, Li, 32); memcpy(Li, tmp, 32); } }else{ for(int i=15; i>=0; --i) { memcpy(tmp, Li, 32); F_func(Li, (*pSubKey)[i]); Xor(Li, Ri, 32); memcpy(Ri, tmp, 32); } } Transform(M, M, IPR_Table, 64); BitToByte(Out, M, 64); } void SetSubKey(PSubKey pSubKey, const char Key[8]) { static bool K[64], *KL=&K[0], *KR=&K[28]; ByteToBit(K, Key, 64); Transform(K, K, PC1_Table, 56); for(int i=0; i<16; ++i) { RotateL(KL, 28, LOOP_Table[i]); RotateL(KR, 28, LOOP_Table[i]); Transform((*pSubKey)[i], K, PC2_Table, 48); } } void F_func(bool In[32], const bool Ki[48]) { static bool MR[48]; Transform(MR, In, E_Table, 48); Xor(MR, Ki, 48); S_func(In, MR); Transform(In, In, P_Table, 32); } void S_func(bool Out[32], const bool In[48]) { for(char i=0,j,k; i<8; ++i,In+=6,Out+=4) { j = (In[0]<<1) + In[5]; k = (In[1]<<3) + (In[2]<<2) + (In[3]<<1) + In[4]; ByteToBit(Out, &S_Box[i][j][k], 4); } } void Transform(bool *Out, bool *In, const char *Table, int len) { for(int i=0; i<len; ++i) Tmp[i] = In[ Table[i]-1 ]; memcpy(Out, Tmp, len); } void Xor(bool *InA, const bool *InB, int len) { for(int i=0; i<len; ++i) InA[i] ^= InB[i]; } void RotateL(bool *In, int len, int loop) { memcpy(Tmp, In, loop); memcpy(In, In+loop, len-loop); memcpy(In+len-loop, Tmp, loop); } void ByteToBit(bool *Out, const char *In, int bits) { for(int i=0; i<bits; ++i) Out[i] = (In[i>>3]>>(i&7)) & 1; } void BitToByte(char *Out, const bool *In, int bits) { memset(Out, 0, bits>>3); for(int i=0; i<bits; ++i) Out[i>>3] |= In[i]<<(i&7); } bool DES::Des_Go(char *Out, char *In, long datalen, const char *Key, int keylen, bool Type) { if( !( Out && In && Key && (datalen=(datalen+7)&0xfffffff8) ) ) return false; SetKey(Key, keylen); if( !Is3DES ) { // 1次DES for(long i=0,j=datalen>>3; i<j; ++i,Out+=8,In+=8) SDES(Out, In, &SubKey[0], Type); } else{ // 3次DES 加密:加(key0)-解(key1)-加(key0) 解密::解(key0)-加(key1)-解(key0) for(long i=0,j=datalen>>3; i<j; ++i,Out+=8,In+=8) { SDES(Out, In, &SubKey[0], Type); SDES(Out, Out, &SubKey[1], !Type); SDES(Out, Out, &SubKey[0], Type); } } return true; }

    2011-03-18
    5