week05

 #OpenCV安裝

1.桌面\葉正聖老師上課軟體\OpenCV

2.小心1:Add OpenCV  to...PATH

3.小心:安裝要在預設的C:\OpenCV2.1目錄裡

4.請安裝完後重開Codeblocks

5.設定Setting-Compiler要加入3個設定

5.1 search 目錄 Compiler 的 include目錄 加C:\OpenCV2.1\include

5.2 search 目錄 Linker 的 lib 目錄C:\OpenCV2.1\lib

5.3 加入Linker 的 3個檔名 cv210 cxcore210 highgui210

#week05-1

1.打程式碼

2.搜尋圖片，另存圖片到C曹

#include<opencv/highgui.h>

int main()

{

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

    cvShowImage("week05",img);

    cvWaitKey(0);

}

1.下載課本範例https://jsyeh.org/3dcg10/

2.window.zip解壓縮

3.data.zip解壓縮

4.執行Texture.exe

5.改glTexCoord2f(tx,ty);貼圖座標,glVertex3f(x,y,z);頂點

#week05_opencv_cvLoadImage

 0. 桌面安裝 freeglut，把 lib 的l ibfreeglut.a複製成 libglut32.a

1.File-New-Project ，Glut 專案week05_opencv_cvLoadImage.cpp

2.貼上11行

3.修改程式碼

#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_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week05");

    glutDisplayFunc(display);

    glutMainLoop();

}

#week05_opencv_opengl_myTexture

1.File-New-Project ，Glut 專案week05_opencv_opengl_myTexture

2.在moodle老師有一個Github Gist網址，裡面有myTexture.cpp

3.貼到你專案的main.cpp的前18行

4.後面10行,貼你之前的GLUT程式

5.最後的glutMainLoop()之前，加入myTexture("c:/image.jpg");

##week05_opencv_opengl_myTexture_glTexCoord2f

1.File-New-Project ，Glut 專案week05_opencv_opengl_myTexture_glTexCoord2f

2.貼上剛剛的程式week05_opencv_opengl_myTexture

3.加入課本的四行程式

```cpp

glBegin(GL_POLYGON);

    glTexCoord2f(0,0); glVertex2f(-1,-1)

    glTexCoord2f(0,1); glVertex2f(-1,+1)

    glTexCoord2f(1,1); glVertex2f(+1,+1)

    glTexCoord2f(1,0); glVertex2f(+1,-1)

glEnd();

```

4.背景圖上下顛倒

##week05_roating_eath

0.google:earth mapp 找圖片，滿版地圖

1.File-New-Project ，Glut 專案week05_roating_eath

2.把week05_opencv_opengl_myTexture貼到新專案

3.修改程式碼