week05

 

檔案名子要存對否則可能無法開啟

1.https://jsyeh.org/3dcg10/ 下載 data win32

改glTexCoord2f(tx,ty);Wu, 貼圖座標

#include <GL/glut.h>

#include <opencv/highgui.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc, char*argv[])

{

    IplImage * img = cvLoadImage("c:/image.jpg");

    cvShowImage("opencv",img);

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05");

    glutDisplayFunc(display);

    glutMainLoop();

}

老師的網址

https://gist.github.com/jsyeh/5ed01210559721ec71b659b3ffed2dd7

#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 * quad = NULL;

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖

    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)

    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID

    glGenTextures(1, &id); /// 產生Generate 貼圖ID

    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點

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

    return id;

}

///再貼上10行glut程式碼

float angle = 0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glEnable(GL_DEPTH_TEST);

    glPushMatrix();

        glRotatef(90,1,0,0);

        glRotatef(angle++,0,0,1);

        gluSphere(quad,1,30,30);///glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc, char*argv[])

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05");

    glutIdleFunc(display);

    glutDisplayFunc(display);

    myTexture("c:/earth.jpg");///再加

    quad=gluNewQuadric();///todo:把這顆指標,指好

    gluQuadricTexture(quad,1);///todo:做好地球

    glutMainLoop();

}

地球旋轉