8

#include <GL/glut.h>

#include <opencv/highgui.h>

#include <opencv/cv.h>

GLUquadric* quad=NULL;

void display()

{

     glEnable(GL_DEPTH_TEST);

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    gluQuadricTexture(quad,true);

gluSphere(quad,0.5,30,30);

     glutSwapBuffers();

     }

int main()

{

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week08");

    glutDisplayFunc(display);

     //new

 GLuint id;

 IplImage*img=cvLoadImage("earth.jpg");

 cvCvtColor (img, img ,CV_BGR2RGB);

glEnable(GL_TEXTURE_2D);

glGenTextures(1,&id);

glBindTexture(GL_TEXTURE_2D, id);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_LINEAR);

glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,img->width,img->height,0,GL_RGB,GL_UNSIGNED_BYTE,img->imageData);

//new

quad= gluNewQuadric();

glutMainLoop();

}

-----------------

照上禮拜的順序   再做修改  改變視角

-----------------

#include <GL/glut.h>

#include <opencv/highgui.h>

#include <opencv/cv.h>

GLUquadric* quad=NULL; //宣告兩次曲面 quad 

float angle=0;

void display()

{

glEnable(GL_DEPTH_TEST);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();//用push保護 

glRotatef(90,1,0,0);//再轉過來 

glRotatef(angle,0,0,1);//整個旋轉中的地球 

gluQuadricTexture(quad,true);//2次曲面設定 

gluSphere(quad,0.5,30,30);//畫圓 

glPopMatrix();

glutSwapBuffers();

}

void idle()

{

angle++;//每次改變angle值 

glutPostRedisplay();

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06");

glutDisplayFunc(display);

glutIdleFunc(idle);//註冊idle 函示 

//new

GLuint id;

IplImage*img=cvLoadImage("earth.jpg");

cvCvtColor (img, img ,CV_BGR2RGB);

glEnable(GL_TEXTURE_2D);

glGenTextures(1,&id);

glBindTexture(GL_TEXTURE_2D, id);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_LINEAR);

glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,img->width,img->height,0,GL_RGB,GL_UNSIGNED_BYTE,img->imageData);

//new

quad= gluNewQuadric();

glutMainLoop();

}

---------------------------

會橫著轉(往右轉)

----------------------------