week10

 

實作: 上週貼圖+貼到四邊形=背景圖

1.安裝 freeglut , OpenCV2.1(Add PATH)

   CodeBlocks開一個新的檔，File > New > Project > GLUT專案 > go , 

   在桌面設定好freeglut , 檔名存成 week10_texture_brackground

gluSphere( sphere, 1, 30, 30 );

參數是(指標,r半徑,slices柳丁切經縣,stack堆疊緯)

#include <opencv/highgui.h> 

#include <opencv/cv.h>

#include <GL/glut.h>

GLUquadric * sphere =NULL; ///指標只到二次曲面

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); ///設好貼圖

    gluSphere(sphere, 1, 30, 30); ///畫圓球

    glutSwapBuffers();

}

int main(int argc, char**argv){

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);

    myTexture("OIP.png"); ///地球的地圖，圖等一下準備好

    sphere=gluNewQuadric(); ///準備好二次曲面

    glutMainLoop();

}

2-1能轉動的地球

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可

#include <opencv/cv.h>

#include <GL/glut.h>

GLUquadric * sphere =NULL; ///指標只到二次曲面

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;///旋轉角度

void display(){

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle, 0, 0, 1);

        gluQuadricTexture(sphere, 1); ///設好貼圖

        gluSphere(sphere, 1, 30, 30); ///畫圓球

    glPopMatrix();

    glutSwapBuffers();

    angle+=0.01; ///每次執行dispaly()時angle+1(看電腦好的轉少點)

}

int main(int argc, char**argv){

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutIdleFunc(display); ///有空idle 呼叫display()

    glutDisplayFunc(display);

    myTexture("OIP.png"); ///地球的地圖，圖等一下準備好

    sphere=gluNewQuadric(); ///準備好二次曲面

    glutMainLoop();

}

#include <opencv/highgui.h> 

#include <opencv/cv.h>

#include <GL/glut.h>

GLUquadric * sphere =NULL; ///指標只到二次曲面

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;///旋轉角度

void display(){

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(90, 1, 0, 0);///把地球轉正，而非由上往下看

        glRotatef(angle, 0, 0, 1);

        gluQuadricTexture(sphere, 1); ///設好貼圖

        gluSphere(sphere, 1, 30, 30); ///畫圓球

    glPopMatrix();

    glutSwapBuffers();

    angle+=0.01; ///每次執行dispaly()時angle+1(看電腦好的轉少點)

}

int main(int argc, char**argv){

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

   

    glEnable(GL_DEPTH_TEST);///開3D深度測試,才會有3D效果(解決破圖)

    glutIdleFunc(display); ///有空idle 呼叫display()

    glutDisplayFunc(display);

    myTexture("OIP.png"); ///地球的地圖，圖等一下準備好

    sphere=gluNewQuadric(); ///準備好二次曲面

    glutMainLoop();

}