顯示具有 09160154_魏益謙 標籤的文章。 顯示所有文章
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2022年6月25日 星期六

電腦圖學week16課堂筆記

 課堂內容 : 讓動畫自動動作、運鏡
1.第一個程式碼 : (複製之前的程式碼)
#include <GL/glut.h>
#include <stdio.h>
float angle[20],oldX=0;
float newangle[20],oldangle[20];
int angleid=0;
FILE * fout = NULL , *fin =NULL;
void write()
{
    if(fout == NULL) fout = fopen("file.txt","w+");

    for(int i=0;i<20;i++)
    {
        printf("%.1f",angle[i]);
        fprintf(fout,"%.1f",angle[i]);
    }
    printf("\n");
    fprintf(fout,"\n");
}
void read()
{
    if(fout != NULL) fclose(fout); fout=NULL;
    if(fin==NULL) fin=fopen("file.txt","r");
    for(int i=0;i<20;i++)
    {
        oldangle[i]=newangle[i];
        fscanf(fin,"%f", &newangle[i]);
    }
    glutPostRedisplay();
}
void interpolate(float alpha)
{
    for(int i=0;i<20;i++)
    {
        angle[i]=alpha*newangle[i]+(1-alpha)*oldangle[i];
    }
}
void timer(int t)
{
    if(t%50==0) read();
    interpolate( (t%50)/50.0 );
    glutPostRedisplay();
    glutTimerFunc(5,timer,t+1);
}

void key(unsigned char key,int x,int y)
{
    if(key=='p')
    {
        read();
        glutTimerFunc(0,timer,0);
    }
    if(key=='s') write();
    if(key=='r') read();
    if(key=='0') angleid=0;
    if(key=='1') angleid=1;
    if(key=='2') angleid=2;
    if(key=='3') angleid=3;
}
void mouse(int button,int state,int x,int y)
{
    oldX=x;
}
void motion(int x,int y)
{
    angle[angleid]+=(x-oldX);
    oldX=x;
    glutPostRedisplay();
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3f(1,1,1);
    glRectf(0.3,0.5,-0.3,-0.5);
    glPushMatrix();
        glTranslatef(0.3,0.4,0);
        glRotatef(angle[0],0,0,1);
        glTranslatef(-0.3,-0.4,0);
        glColor3f(1,0,0);
        glRectf(0.3,0.5,0.7,0.3);
        glPushMatrix();
            glTranslatef(0.7,0.4,0);
            glRotatef(angle[1],0,0,1);
            glTranslatef(-0.7,-0.4,0);
            glColor3f(0,1,0);
            glRectf(0.7,0.5,1.0,0.3);
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.3,0.4,0);
        glRotatef(angle[2],0,0,1);
        glTranslatef(0.3,-0.4,0);
        glColor3f(1,0,0);
        glRectf(-0.3,0.5,-0.7,0.3);
        glPushMatrix();
            glTranslatef(-0.7,0.4,0);
            glRotatef(angle[3],0,0,1);
            glTranslatef(0.7,-0.4,0);
            glColor3f(0,1,0);
            glRectf(-0.7,0.5,-1.0,0.3);
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week16");
    glutMouseFunc(mouse);
    glutKeyboardFunc(key);
    glutMotionFunc(motion);
    glutDisplayFunc(display);
    glutMainLoop();
}
按 P 後動畫會自己動作

2.運鏡
程式碼 : 
#include <GL/glut.h>
void reshape(int w,int h)
{
    float ar =(float) w / (float) h;
    glViewport(0,0,w,h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60,ar,0.1,100);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(0,0,3,
              0,0,0,
              0,1,0);
}
void display()
{
    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot(1);
    glutSwapBuffers();
}
void motion (int x,int y)
{
     glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt((x-150)/150.0,(y-150)/150.0,3,
               0,0,0,
               0,1,0);
    glutPostRedisplay();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv);
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow("week16");
    glutMotionFunc(motion);
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutMainLoop();
}


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電腦圖學week15課堂筆記

 1.今日課堂內容 : 用程式撥放聲音
第一個程式 : 
#include <windows.h>
#include <stdio.h>
int main()
{
    printf("播放音樂前\n");
    PlaySound("07071064.wav", NULL, SND_SYNC);
    printf("播放音樂後\n");
}
播放後會有錯誤的音效，只要把音檔跟 CodeBlocks 放在同一個資料夾就可以解決了


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電腦圖學week14課堂筆記

 課堂內容 : fprintf()、fscanf() 寫檔和讀檔；fprintf()、fscanf() + project

1.寫檔
#include <stdio.h>
int main()
{
    FILE * fout = fopen("file.txt", "w+");
    printf("Hello World\n");
    fprintf(fout,"Hello World\n");
    fclose(fout);
}
2.讀檔
#include <stdio.h>
int main()
{
    FILE * fout = fopen("file.txt", "w+");
    fprintf(fout,"3.1415926\n");
    fclose(fout);

    float angle=0;
    FILE * fin = fopen("file.txt", "r");
    fscanf(fin, "%f", &angle );
    printf("角度:%f", angle);
    fclose(fin);
}
3.加入上週的程式
#include <GL/glut.h>
#include <stdio.h>
float angle[20],oldx=0;
int angleID=0;
FILE*fout=NULL;
void mywrite()
{
    if(fout == NULL) fout=fopen("file.txt", "w+");
    for(int i=0 ; i<20 ; i++)
    {
        printf("%.1f\n", angle[i]);
        fprintf(fout, "%.1f", angle[i]);
    }
}
void keyboard(unsigned char key,int x,int y)
{
    if(key=='0')angleID=0;
    if(key=='1')angleID=1;
    if(key=='2')angleID=2;
    if(key=='3')angleID=3;
}
void mouse(int button,int state,int x,int y)
{
    oldx=x;
}
void motion(int x,int y)
{
    angle[angleID]+=(x-oldx);
    mywrite();
    oldx=x;
    glutPostRedisplay();
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glColor3f(1,1,1);
    glRectf(0.3,0.5,-0.3,-0.5);
    glPushMatrix();
        glTranslatef(0.3,0.4,0);
        glRotatef(angle[0],0,0,1);
        glTranslatef(-0.3,-0.4,0);
        glColor3f(1,0,0);
        glRectf(0.3,0.5,0.7,0.3);
        glPushMatrix();
            glTranslatef(0.7,0.4,0);
            glRotatef(angle[1],0,0,1);
            glTranslatef(-0.7,-0.4,0);
            glColor3f(0,1,0);
            glRectf(0.7,0.5,1.0,0.3);
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.3,0.4,0);
        glRotatef(-angle[2],0,0,1);
        glTranslatef(0.3,0.4,0);
        glColor3f(1,0,0);
        glRectf(-0.3,-0.5,-0.7,-0.3);
        glPushMatrix();
            glTranslatef(-0.7,-0.4,0);
            glRotatef(-angle[3],0,0,1);
            glTranslatef(0.7,0.4,0);
            glColor3f(0,1,0);
            glRectf(-0.7,-0.5,-1.0,-0.3);
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
int main(int argc,char**argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("week14");
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);
    glutDisplayFunc(display);
    glutMainLoop();
}
最後可以做成動畫 : 
#include <GL/glut.h>
#include <stdio.h>
float angle[20] , oldx=0;
int angleID=0;
FILE*fout=NULL, *fin=NULL;
void myWrite(){
    if( fout == NULL) fout = fopen("file.txt", "w+");
    for(int i=0; i<20; i++)
    {
        printf("%.1f ", angle[i] );
        fprintf(fout, "%.1f ", angle[i] );
    }
    printf("\n");
    fprintf(fout,"\n");
}
void myRead()
{
    if( fout != NULL )  fclose(fout); fout=NULL;
    if( fin == NULL ) fin = fopen("file.txt", "r");
    for(int i=0; i<20; i++)
    {
        fscanf(fin, "%f",&angle[i] );
    }
    glutPostRedisplay();
}
void keyboard(unsigned char key , int x  , int y)
{
    if (key=='r') myRead();
    if (key=='0') angleID=0;
    if (key=='1') angleID=1;
    if (key=='2') angleID=2;
    if (key=='3') angleID=3;
}
void mouse(int button , int state , int x ,int y)
{
    oldx=x;
}
void motion (int x, int y)
{
    angle[angleID]+=(x-oldx);
    myWrite();
    oldx=x;
    glutPostRedisplay();
}
void display()
{
    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3f(1,1,1);
    glRectf(0.3,0.5,-0.3,-0.5);
    glPushMatrix();
        glTranslatef(0.3,0.4,0);
        glRotatef(angle[0],0,0,1);
        glTranslatef(-0.3,-0.4,0);
        glColor3f(1,0,0);
        glRectf(0.3,0.5,0.7,0.3);
        glPushMatrix();
            glTranslatef(0.7,0.4,0);
            glRotatef(angle[1],0,0,1);
            glTranslatef(-0.7,-0.4,0);
            glColor3f(0,1,0);
            glRectf(0.7,0.5,1.0,0.3);
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.3,0.4,0);
        glRotatef(angle[2],0,0,1);
        glTranslatef(0.3,-0.4,0);
        glColor3f(1,0,0);
        glRectf(-0.3,0.5,-0.7,0.3);
        glPushMatrix();
            glTranslatef(-0.7,0.4,0);
            glRotatef(angle[3],0,0,1);
            glTranslatef(0.7,-0.4,0);
            glColor3f(0,1,0);
            glRectf(-0.7,0.5,-1.0,0.3);
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv);
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow("week14");
    glutKeyboardFunc(keyboard);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutDisplayFunc(display);
    glutMainLoop();
}
按 r 可以重複剛剛的動作








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電腦圖學week13課堂筆記

今日課堂內容 : (1) glRectf()函式 和 glRectf()做的手臂
1. glRectf() 四個函數分別為 (1)右上X，右上Y，左上X，左上Y
第一個程式 : 
#include <GL/glut.h>
float angle=45;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glColor3f(1,1,1);
    glRectf( 0.3, 0.5,  -0.3, -0.5);
    glPushMatrix();
        glTranslatef( 0.3,  0.4, 0);
        glRotatef(angle, 0,0,1);
        glTranslatef(-0.3, -0.4, 0);
        glColor3f(1,0,0);
        glRectf( 0.3, 0.5,  0.7, 0.3);
    glPopMatrix();
    glutSwapBuffers();
}
2. glRectf()加上手臂
第二個程式 :
#include <GL/glut.h>
float angle=0, oldX=0;
void mouse(int button, int state, int x, int y)
{
    oldX = x;
}
void motion(int x, int y)
{
    angle += (x-oldX);
    oldX = x;
    glutPostRedisplay();
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glColor3f(1,1,1);
    glRectf( 0.3, 0.5,  -0.3, -0.5);
    glPushMatrix();
        glTranslatef( 0.3,  0.4, 0);
        glRotatef(angle, 0,0,1);
        glTranslatef(-0.3, -0.4, 0);
        glColor3f(1,0,0);
        glRectf( 0.3, 0.5,  0.7, 0.3);
        glPushMatrix();
            glTranslatef( x, y, z);
            glRotatef(angle, 0,0,1);
            glTranslatef(x2,y2,z2);
            glColor3f(0,1,0);
            glRectf( 0.7, 0.5, 1.0, 0.3);
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
 最後的程式碼 : 
#include <GL/glut.h>
float angle[20],oldx=0;
int angleID=0;
void keyboard(unsigned char key,int x,int y)
{
    if(key=='0')angleID=0;
    if(key=='1')angleID=1;
    if(key=='2')angleID=2;
    if(key=='3')angleID=3;
}
void mouse(int button,int state,int x,int y)
{
    oldx=x;
}
void motion(int x,int y)
{
    angle[angleID]+=(x-oldx);
    oldx=x;
    glutPostRedisplay();
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glColor3f(1,1,1);
    glRectf(0.3,0.5,-0.3,-0.5);
    glPushMatrix();
        glTranslatef(0.3,0.4,0);
        glRotatef(angle[0],0,0,1);
        glTranslatef(-0.3,-0.4,0);
        glColor3f(1,0,0);
        glRectf(0.3,0.5,0.7,0.3);
        glPushMatrix();
            glTranslatef(0.7,0.4,0);
            glRotatef(angle[1],0,0,1);
            glTranslatef(-0.7,-0.4,0);
            glColor3f(0,1,0);
            glRectf(0.7,0.5,1.0,0.3);
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.3,0.4,0);
        glRotatef(-angle[2],0,0,1);
        glTranslatef(0.3,0.4,0);
        glColor3f(1,0,0);
        glRectf(-0.3,-0.5,-0.7,-0.3);
        glPushMatrix();
            glTranslatef(-0.7,-0.4,0);
            glRotatef(-angle[3],0,0,1);
            glTranslatef(0.7,0.4,0);
            glColor3f(0,1,0);
            glRectf(-0.7,-0.5,-1.0,-0.3);
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
int main(int argc,char**argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("week13");
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);
    glutDisplayFunc(display);
    glutMainLoop();
}







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2022年5月16日 星期一

電腦圖學week12課堂筆記

 先看範例
glTranslatef( 0.9 , 0.0 , 0.0 );  =>  代表移動
glRotatef( 角度, 0, 1, 0);  =>  代表旋轉

開始做
第一個程式:
#include <GL/glut.h>
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef( angle, 0, 0, 1);
        glutSolidTeapot( 0.2 );
    glPopMatrix();
    glutSwapBuffers();
    angle++;
}
int main( int argc, char** argv )
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE|GLUT_DEPTH );
    glutCreateWindow("week12 TRT");

    glutIdleFunc(display);
    glutDisplayFunc(display);
    glutMainLoop();
}
(茶壺會一直旋轉)

#include <GL/glut.h>
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);
    glutSolidTeapot( 0.3 );
    glPushMatrix();
        glTranslatef(0.2, 0, 0);
        glRotatef( angle, 0, 0, 1);
        glTranslatef(0.2, 0, 0);
        glColor3f(1,0,0);
        glutSolidTeapot( 0.2 );
        glPushMatrix();
            glTranslatef(0.2, 0, 0);
            glRotatef( angle, 0, 0, 1);
            glTranslatef(0.2, 0, 0);
            glColor3f(1,0,0);
            glutSolidTeapot( 0.2 );
        glPopMatrix();
    glPopMatrix();

    glutSwapBuffers();
    angle++;
}
int main( int argc, char** argv )
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE|GLUT_DEPTH );
    glutCreateWindow("week12 T-R-T");

    glutIdleFunc(display);
    glutDisplayFunc(display);
    glutMainLoop();
}
(白色的茶壺增加了兩個紅色的茶壺當手臂，且紅色的茶壺會轉動)

#include <GL/glut.h>
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);
    glutSolidTeapot( 0.3 );
    glPushMatrix();
        glTranslatef(0.2, 0, 0);
        glRotatef( angle, 0, 0, 1);
        glTranslatef(0.2, 0, 0);
        glColor3f(1,0,0);
        glutSolidTeapot( 0.2 );
        glPushMatrix();
            glTranslatef(0.2, 0, 0);
            glRotatef( angle, 0, 0, 1);
            glTranslatef(0.2, 0, 0);
            glColor3f(1,0,0);
            glutSolidTeapot( 0.2 );
        glPopMatrix();
    glPopMatrix();


    glPushMatrix();
        glTranslatef(0.2, 0, 0);
        glRotatef( angle, 0, 0, 1);
        glTranslatef(0.2, 0, 0);
        glColor3f(1,0,0);
        glutSolidTeapot( 0.2 );
        glPushMatrix();
            glTranslatef(0.2, 0, 0);
            glRotatef( angle, 0, 0, 1);
            glTranslatef(0.2, 0, 0);
            glColor3f(1,0,0);
            glutSolidTeapot( 0.2 );
        glPopMatrix();
    glPopMatrix();

    glPushMatrix();
        glTranslatef(-0.2, 0, 0);
        glRotatef( -angle, 0, 0, 1);
        glTranslatef(-0.2, 0, 0);
        glColor3f(1,0,0);
        glutSolidTeapot( 0.2 );
        glPushMatrix();
            glTranslatef(-0.2, 0, 0);
            glRotatef( -angle, 0, 0, 1);
            glTranslatef(-0.2, 0, 0);
            glColor3f(1,0,0);
            glutSolidTeapot( 0.2 );
        glPopMatrix();
    glPopMatrix();

    glutSwapBuffers();
    angle++;
}
int main( int argc, char** argv )
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE|GLUT_DEPTH );
    glutCreateWindow("week12 T-R-T");

    glutIdleFunc(display);
    glutDisplayFunc(display);
    glutMainLoop();
}
(另一邊也增加手臂)










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2022年5月8日 星期日

電腦圖學week11筆記

 前置作業:
   從 teams 上把 myGundam.zip 下載

開始做:
今天的第一個程式:
1.把week09的texture程式放在上面
2.GLUT10行程式放下面
3.加入myTexture("data/Diffuse.jpg");  (放在glutMainLoop()之前)

#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week11 gundam");

    glutDisplayFunc(display);
    myTexture("data/Diffuse.jpg");

    glutMainLoop();
}
(把鋼彈的貼圖印到茶壺上面)

把鋼彈的模組加進程式裡:
1.把之前的 glm.h、glm.c(改成glm.cpp) 放到 week11 資料夾裡
2.在 Codeblocks 左邊用 Add Files 把 glm.cpp 加進去
3.加入新的程式碼
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel * pmodel = NULL;
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    ///glutSolidTeapot( 0.3 );
    if( pmodel == NULL )
    {
        pmodel = glmReadOBJ("data/Gundam.obj");
        glmUnitize( pmodel );
        glmFacetNormals( pmodel );
        glmVertexNormals( pmodel , 90 );
    }
    glmDraw( pmodel, GLM_TEXTURE );
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week11 gundam");

    glutDisplayFunc(display);
    myTexture("data/Diffuse.jpg");

    glutMainLoop();
}






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2022年5月2日 星期一

電腦圖學week10筆記

 開始做

1.
第一步:
1.開一個新檔案: Week10_texture_background
2.把上週的程式碼複製並貼上

#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);
    myTexture("sky.png");

    glutMainLoop();
}

第二步:
設定OpenCV

(1)Settings => compiler => Search directories => Compiler
(2)Settings => compiler => Search directories => Linker
(3)Settings => compiler => Linker settings
(4)把圖檔放到工作目錄
(上週的程式)

第三步:
修改程式碼，把茶壺變成正方形
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    ///glutSolidTeapot( 0.3 );
    glBegin(GL_POLYGON);
        glTexCoord2f(0,1); glVertex2f(-1,-1);
        glTexCoord2f(1,1); glVertex2f(+1,-1);
        glTexCoord2f(1,0); glVertex2f(+1,+1);
        glTexCoord2f(0,0); glVertex2f(-1,+1);
    glEnd();
    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10 texture background");

    glutDisplayFunc(display);
    myTexture("sky.png");

    glutMainLoop();
}


2.
第一步:
1.開一個新檔案:week10_texture_earth
2.把剛剛的程式碼抄下來並做修改

#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
GLUquadric * sphere = NULL;
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    gluQuadricTexture(sphere, 1);
    gluSphere( sphere, 1, 30, 30 );
    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10 texture earth");

    glutDisplayFunc(display);
    myTexture("earth.jpg");
    sphere = gluNewQuadric();
    glutMainLoop();
}

第二步:
讓地球旋轉
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
GLUquadric * sphere = NULL;
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(angle,0,0,1);
        gluQuadricTexture(sphere,1);
        gluSphere(sphere,1,30,30);
    glPopMatrix();
    glutSwapBuffers();
    angle+=0.01;
}
int main(int argc, char**argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10 texture earth");

    glutIdleFunc(display);
    glutDisplayFunc(display);
    myTexture("earth.jpg");
    sphere = gluNewQuadric();
    glutMainLoop();
}
(地球會自己轉動)

第三步:
最後的修改
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
GLUquadric * sphere = NULL;
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename);
    cvCvtColor(img,img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(90,1,0,0);
        glRotatef(angle,0,0,1);
        gluQuadricTexture(sphere,1);
        gluSphere(sphere,1,30,30);
    glPopMatrix();
    glutSwapBuffers();
    angle+=0.01;
}
int main(int argc, char**argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10 texture earth");

    glEnable(GL_DEPTH_TEST);
    glutIdleFunc(display);
    glutDisplayFunc(display);
    myTexture("earth.jpg");
    sphere = gluNewQuadric();
    glutMainLoop();
}
(把地球轉正)





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