Week11_02161052_葉采晴

1.
和opencv結合

要製造一個地球
並且讓他等速的旋轉

#include <opencv/highgui.h> ///for cvLoadImage()

#include <opencv/cv.h> ///for cvCvtColor()

#include <GL/glut.h> ///3D glut

#include <stdio.h>

float angle=0; ///自動轉很帥

GLUquadric * quad;

void display()

{   glEnable(GL_DEPTH_TEST); ///要啟動 Detph Test 深度值的測試,3D顯示才正確

    glClear(GL_COLOR_BUFFER_BIT  | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();///自動轉很帥

        glRotatef(90, 1,0,0);

        glRotatef(angle, 0,0,1);///自動轉很帥

        gluQuadricTexture(quad, 1);

        gluSphere(quad, 0.5, 30, 30); ///glutSolidTeapot(0.3);

    glPopMatrix();///自動轉很帥

    glFlush();

    angle+=1;///自動轉很帥

}

void myInit()

{

    quad = gluNewQuadric();

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

}   ///最後一行最難/最重要, 所貼圖影像的資料都設定好

void timer(int t)

{/// 1000 msec   50fps:20msec

    glutTimerFunc(20, timer, 0);

    //printf("timer now\n");

    glutPostRedisplay();

}

int main(int argc, char**argv)

{   glutInit(&argc, argv);

    glutCreateWindow("3D");

    glutDisplayFunc(display); ///顯示

    //glutIdleFunc(display);///自動轉很帥 (閒閒沒事幹, 就重畫)

    glutTimerFunc(0, timer, 0);

    myInit(); ///我的 init 初始化 把貼圖準備好 前面OpenCV 2行, 後面 OpenGL 9行

    glutMainLoop();

}

2.

利用GLUT寫出旋轉的茶壺

就不用和opencv做設定

茶壺是旋轉的唷!

#include <GL/glut.h>

float angle=0;

void timer(int t)

{

    glutTimerFunc(10,timer,t+1);

    angle+=1;

    glutPostRedisplay();

}

void display()

{

    glEnableClientState(GL_DEPTH_TEST);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotated(angle,0,1,0);

        glutSolidTeapot(0.5);

    glPopMatrix();

    glFlush();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("3D");

    glutDisplayFunc(display);

    glutTimerFunc(10,timer,0);

    glutMainLoop();

}

#include <GL/glut.h>

#include <math.h>

float angle=0,potX=0,potY=0,potVX=0,potVY=0;

int potState=0;

void timer(int t)

{

    glutTimerFunc(10,timer,t+1);

    angle+=1;

    if(potState==0)potY=0.5*sin(angle/180.0*3.14);

    if(potState==2){potX+=potVX; potY+=potVY;}

    glutPostRedisplay();

}

void display()

{

    glEnable(GL_DEPTH_TEST);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.01);

    glPushMatrix();

        glTranslatef(potX,potY,0);

        glRotated(angle,0,1,0);

        glutSolidTeapot(0.01);

    glPopMatrix();

    glFlush();

}

void mouse(int button,int state,int x,int y)

{

    if(state==GLUT_DOWN){potState=1;}

    else if(state==GLUT_UP){potState=2; potVX=-(x-350)/3500.0; potVY=(y-350)/3500.0;}

}

void motion(int x,int y)

{

    if(potState==1){potX=(x-350)/350.0; potY=-(y-350)/350.0;}

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("3D");

    glutReshapeWindow(700,700);

    glutDisplayFunc(display);

    glutTimerFunc(10,timer,0);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}