[code]纹理映射

#define _CRT_SECURE_NO_WARNINGS

#pragma comment (lib,"glaux.lib") 

#include <windows.h>

#include <gl\gl.h>

#include <stdio.h>

#include <time.h>

#include <gl\glu.h>

#include <gl\glut.h>

#include <gl\glaux.h>

#include <stdlib.h>

GLuint texture[1];    //存储纹理数据

GLfloat x = 0.0f,y = 0.0f,z = 0.0f;

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

// 装入bmp格式图像，并检查错误，工程下创建的文件夹data

if (TextureImage[0] = auxDIBImageLoad(TEXT("Data/Crate.bmp")))

{

Status=TRUE;          // Set The Status To TRUE

glGenTextures(1, &texture[0]);      // 创建纹理

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

}

void reshape(int width,int height)

{

glViewport(0,0,(GLsizei)width,(GLsizei)height);

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

gluPerspective(60,1,2,-5);

glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

gluLookAt(0.0,0.0,6.0,0.0,0.0,0.0,0.0,1.0,0.0);//设置眼睛

}

void display(void)

{

glPushMatrix();

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

glRotatef(x,1.0,0.0,0.0);

glRotatef(y,0.0,1.0,0.0);

glRotatef(z,0.0,0.0,1.0);

glBindTexture(GL_TEXTURE_2D, texture[0]);

glBegin(GL_QUADS);

glColor3f(1.0,1.0,1.0);

// Front Face

glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);

glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);

glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);

glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);

// Back Face

glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);

glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);

glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);

glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);

// Top Face

glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);

glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);

glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);

glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);

// Bottom Face

glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);

glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);

glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);

glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);

// Right face

glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);

glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);

glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);

glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);

// Left Face

glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);

glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);

glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);

glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);

glEnd();

glPopMatrix();

glutSwapBuffers();

x += 0.3f;

y += 0.2f;

z += 0.4f; 

}

int Init(void)

{

if (!LoadGLTextures())         // Jump To Texture Loading Routine ( NEW )

{

return 0;          // 没有加载成功

}

glClearColor(0.0,0.0,0.0,0.0);

glClearDepth(1.0f);

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

glEnable(GL_TEXTURE_2D);

glEnable(GL_DEPTH_TEST);

glDepthFunc(GL_LEQUAL);

glShadeModel(GL_SMOOTH);

return 1;

}

int main(int argc,char ** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

glutInitWindowPosition(300,400);

glutInitWindowSize(600,600);

glutCreateWindow("...");

Init();

glutDisplayFunc(display);

glutIdleFunc(display);

glutReshapeFunc(reshape);

glutMainLoop();

return 0;

}