獻祭肝臟的電腦圖學課堂筆記_week10

window、freeglut、data、source.....

1.1 opencv(like last week)

1.2 copy last week code

#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();

}

2.修改opencv設定

Settings->Compiler

在Search directions->Compiler加入C:\OpenCV2.1\Include

再到Search directions->Linker加入C:\OpenCV2.1\lib

到LinkerSettins加入cv210,cxcore210,highgui210

3.修改圖片位置(查看Build log裡面的workplace)

4.執行結果

Step02:

1.display()加入以下程式:

Begin(GL_POLYGON);

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

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

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

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

glEnd();

2.加入GLUquadric *sphere=NULL;///指標，只到二次曲面

3.在display()加入

gluQuadricTexture(sphere,1);

gluSphere(sphere,1,30,30);

4.在main()加入

sphere=gluNewQuadric();

5.執行結果

Step03:

1.寫入float angle=0;

2.在display()寫入

glPushMatrix();

    glRotatef(angle,0,0,1);

    gluSphere(sphere,1,30,30);

glPopMatrix();

angle+=0.1;

3.在main()加入

glutIdleFunc(display);

4.執行結果

5.在display()加入

glRotatef(90,1,0,0);

6.在main()加入

glEnable(GL_DEPTH_TEST);///

7.執行