END之書 week09

 1.window...   data....  source..... texture.exe "貼圖"

2.opencv 2.1.0

moodle/teams 下載 opencv 2.1.0 win32 vs2008

! add path 選第二個，目錄不要改，載完codeblock要重開(載完會修改path的設定)

2-1 讀圖、秀圖

File => new => emptyfile => week09_opencv.cpp

#include <opencv/highgui.h> opencv外掛

int main()

{

    Ip "l" Image * img = cvLoadImage("------.jpg"); 讀圖

    cvShowImage("week09",img); 放圖

    cvWaitKey(0); 任意鍵繼續

}

# Ipl = Intel performance library

Setting => compiler => ...

最後放出圖片

3. opencv、openGL

File => new => project => glut => week09_texture

glut範例+opencv圖

#include <GL/glut.h>

#include <opencv/highgui.h>

void myTexture()

{

    IplImage * img = cvLoadImage("724425.png");

    cvShowImage("opencv",img);

}

void display()

{

    glClear(GL_COLOR_BUFFER_BI|GL_DEPTH_BUFFER_BIT);

        glutSolidTeapot(0.6);

    glutSwapBuffers();

}

int main(int argc ,char** argv)

{

    glutInit( &argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);

    myTexture();

    glutMainLoop();

}

圖片要放 freeglut => bin

3-1 融合

#include <GL/glut.h>

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可

#include <opencv/cv.h>

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;

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        glutSolidTeapot(0.6);

    glutSwapBuffers();

}

int main(int argc ,char** argv)

{

    glutInit( &argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);

    myTexture("724425.png");

    glutMainLoop();

}