圖學筆記WEEK08

一、.至jsyeh.org/3dcg10下載data.zip windows.zip glut32到桌面

二、至Moodle下載 opencv2.1.0-win32-vs2008.exe

三、打開codeblocks 貝殼專案檔

四、輸入程式碼

#include<opencv/highgui.h>
int main()
{
    IplImage *img = cvLoadImage("earth.jpg");
    cvNamedWindow("hello opencv");
    cvShowImage("hello opencv", img);
    cvWaitKey(0);
    
    return 0;
}

五、此時無法執行!!

*右鍵點選左邊project,build options

*search directories->compiler->C:\openCV2.1\include

*search directories->linker->C:\openCV2.1\lib

*linker setting->cv21,cxcore210,highgui210

6.即可執行

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;
}