00160104_張偉涵

把圖片貼到球體上,變成會旋轉的地球

程式碼兒:

#include <GL/glut.h>

#include <opencv/highgui.h>

#include <opencv/cv.h>

GLUquadric * quad=NULL;

float angle=0;

void display()

{

 glEnable(GL_DEPTH_TEST);

 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

 glPushMatrix();

  glRotatef(90,1,0,0);

  glRotatef(-45,0,1,0);

  glRotatef(angle,0,0,1);

gluQuadricTexture(quad, true);

  gluSphere(quad,0.5,30,30);

 glPopMatrix();

 glutSwapBuffers();

}

void idle()

{

angle++;

glutPostRedisplay();

}

int main()

{

 glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

 glutCreateWindow("");

 glutDisplayFunc(display);

 glutIdleFunc(idle);

 GLuint id;

 IplImage * img = cvLoadImage("map-3.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);

 quad = gluNewQuadric();

 glutMainLoop();

}