AhFatKr的電腦圖學筆記week09

 1.jsyeh.org/3dcg10 下載windows.zip ,data.zip source.zip

2.windows.zip => 下載\windows\Texture.exe

3.data.zip => 下載\windows\data\圖檔

Texture.exe

    貼圖

主題:貼圖

本週實作:opencv讀圖秀圖

1. 下載OpenCV 2.1.0 win32 vs2008 (最小、最快安裝、簡單、跨平台)

2. 寫讀圖、秀圖的 OpenCV

    2-0. CodeBlocks 要重開 (PATH 安裝完之後，便會修改 PATH 的設定)

3. File-New-Empty file, 存成 week09_opencv.cpp

    3-1. 點開 OpenCV #include <opencv/highgui.h> //使用 openc
v的外掛

4. 設定很困難 (include, lib, 咒語)

    4-1. seting->compiler->serch directories-compiler->add inclode

  4-2. seting->compiler->serch directories->linker->add lib

4-3. seting->compiler->linker setttings->add (cv210/cxcore210/highgui210)

然後執行就有圖片啦

#include <opencv/highgui.h>

int main()

{

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

    cvShowImage("week09", img);

    cvWaitKey(0);

}

#include <GL/glut.h>

#include <opencv/highgui.h>

void myTexture()

{

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

    cvShowImage("opencv",img);

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT || GL_DEPTH_BUFFER_BIT);

     glutSolidTeapot(0.3);

     glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);

    myTexture();

    glutMainLoop();

}

把貼圖貼到茶壺上

#include <GL/glut.h>

#include <opencv/cv.h>

#include <opencv/highgui.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(0.3);

     glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);

    myTexture("xiaoxin.png");

    glutMainLoop();

}