week10 02160200 2D 3D圖

TODO:下載OpenCV2.1 安裝C:\Cpen2.1
TODO:設定OpenCV
              (1)file-new-Project
              (2)project-Bluid設定

程式碼

#include <opencv/highgui.h>

#include<GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glFlush();

    angle+=0.1;

}

int main(int argc,char**argv)

{

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

    cvNamedWindow("2D");

    cvShowImage("2D",img);

    cvWaitKey(1);

    glutInit(&argc,argv);

    glutCreateWindow("3D");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

程式碼

#include <opencv/highgui.h> ///for cvLoadImage()

#include <opencv/cv.h> ///for cvCvtColor()

#include <GL/glut.h> ///3D glut

float angle=0; ///自動轉很帥

void display()

{   glEnable(GL_DEPTH_TEST); ///要啟動 Detph Test 深度值的測試,3D顯示才正確

    glClear(GL_COLOR_BUFFER_BIT  | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();///自動轉很帥

        glRotatef(angle, 0,1,0);///自動轉很帥

        glutSolidTeapot(0.3);

    glPopMatrix();///自動轉很帥

    glFlush();

    angle+=0.1;///自動轉很帥

}

void myInit()

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

}   ///最後一行最難/最重要, 所有貼圖影像的資料都設定好

int main(int argc, char**argv)

{   glutInit(&argc, argv);

    glutCreateWindow("3D");

    glutDisplayFunc(display); ///顯示

    glutIdleFunc(display);///自動轉很帥 (閒閒沒事幹, 就重畫)

    myInit(); ///我的 init 初始化 把貼圖準備好 前面OpenCV 2行, 後面 OpenGL 9行

    glutMainLoop();

}

會轉的茶壺

程式碼

#include <GL/glut.h>

float angle=0;

void timer(int t)

{

    glutTimerFunc(10, timer, t+1);

    angle+=1;

    glutPostRedisplay();

}

void display()

{

    glEnable(GL_DEPTH_TEST);

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

     glRotatef(angle, 0,1,0);

     glutSolidTeapot(0.5);

    glPopMatrix();

    glFlush();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutCreateWindow("3D");

    glutDisplayFunc(display);

    glutTimerFunc(10, timer, 0);

    glutMainLoop();

}