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基于openGl的三维旋转魔方源代码

基于openGl的三维旋转魔方源代码/*

* This Code Was Created By Jeff Molofee 2000

* A HUGE Thanks To Fredric Echols For Cleaning Up

* And Optimizing The Base Code, Making It More Flexible!

* If You've Found This Code Useful, Please Let Me Know.

* Visit My Site At https://www.doczj.com/doc/6a2271710.html,

// Header File For Standard Input/Output

#include "MoFang.h"

HDC hDC=NULL; // Private GDI Device Context

HGLRC hRC=NULL; // Permanent Rendering Context

HWND hWnd=NULL; // Holds Our Window Handle

HINSTANCE h Instance; // Holds The Instance Of The Application

bool keys[256]; // Array Used For The Keyboard Routine

bool active=TRUE; // Window Active Flag Set To TRUE By Default

bool fullscreen=TRUE; // Fullscreen Flag Set To Fullscreen Mode By Default

GLfloat xrot; // X Rotation ( NEW )

GLfloat yrot; // Y Rotation ( NEW )

GLfloat zrot; // Z Rotation ( NEW )

GLfloat RX;

GLfloat RY;

GLuint texture[24]; // Storage For One Texture ( NEW )

GLboolean b_RX,b_RY;

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); // Declaration For WndProc

AUX_RGBImageRec *LoadBMP(char *Filename) // Loads A Bitmap Image

{

FILE *File=NULL; // File Handle

if (!Filename) // Make Sure A Filename Was Given

{

return NULL; // If Not Return NULL }

File=fopen(Filename,"r"); // Check To See If The File Exists

if (File) // Does The File Exist?

{

fclose(File); // Close The Handle

return auxDIBImageLoad(Filename); // Load The Bitmap And Return A Pointer }

return NULL; // If Load Failed Return NULL

}

int LoadGLTextures() // Load Bitmaps And Convert To Textures {

int Status=FALSE; // Status Indicator

AUX_RGBImageRec *TextureImage[1]; // Create Storage Space For The Texture

memset(TextureImage,0,sizeof(void *)*1); // Set The Pointer To NULL

// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit

if (TextureImage[0]=LoadBMP("Data/NeHe.bmp"))

{

Status=TRUE; // Set The Status To TRUE

glGenTextures(1, &texture[0]); // Create The Texture

// Typical Texture Generation Using Data From The Bitmap

glBindTexture(GL_TEXTURE_2D, texture[0]);

glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);

}

if (TextureImage[0]) // If Texture Exists

{

if (TextureImage[0]->data) // If Texture Image Exists

{

free(TextureImage[0]->data); // Free The Texture Image Memory }

free(TextureImage[0]); // Free The Image Structure }

return Status; // Return The Status

}

int LoadGLTextures(char *file,int index) // Load Bitmaps And Convert To Textures

{

int Status=FALSE; // Status Indicator

AUX_RGBImageRec *TextureImage[1]; // Create Storage Space For The Texture

memset(TextureImage,0,sizeof(void *)*1); // Set The Pointer To NULL

// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit

if (TextureImage[0]=LoadBMP(file))

{

Status=TRUE; // Set The Status To TRUE

glGenTextures(1, &texture[index]); // Create The Texture

// Typical Texture Generation Using Data From The Bitmap

glBindTexture(GL_TEXTURE_2D, texture[index]);

glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);

}

if (TextureImage[0]) // If Texture Exists

{

if (TextureImage[0]->data) // If Texture Image Exists

{

free(TextureImage[0]->data); // Free The Texture Image Memory }

free(TextureImage[0]); // Free The Image Structure }

return Status; // Return The Status

}

GLvoid ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window

{

if (height==0) // Prevent A Divide By Zero By

{

height=1; // Making Height Equal One }

glViewport(0,0,width,height); // Reset The Current Viewport

glMatrixMode(GL_PROJECTION); // Select The Projection Matrix

glLoadIdentity(); // Reset The Projection Matrix

// Calculate The Aspect Ratio Of The Window

gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix

glLoadIdentity(); // Reset The Modelview Matrix

}

int InitGL(GLvoid) // All Setup For OpenGL Goes Here {

if (!LoadGLTextures("Data/y1.bmp",0)) // Jump To Texture Loading Routine ( NEW )

{