Yiting_week10

 1.

把圖片跟形狀融合

(圖片要放在freeglut/bin)

程式碼：

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖

    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 

    glEnable(GL_TEXTURE_2D); ///開啟貼圖功能

    GLuint id; /// 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("week10 texture");

    glutDisplayFunc(display);

    myTexture("earth.jpg");///圖檔

    glutMainLoop();

}

2.

讓圖的四個角在對應的座標

程式碼：

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage("earth.jpg"); 

    cvCvtColor(img,img, CV_BGR2RGB); 

    glEnable(GL_TEXTURE_2D); 

    GLuint id; 

    glGenTextures(1, &id); 

    glBindTexture(GL_TEXTURE_2D, id); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 

    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);

    glBegin(GL_POLYGON);

    ///圖片的0,0在左上角

        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();

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10 texture");

    glutDisplayFunc(display);

    myTexture("earth.jpg");

    glutMainLoop();

}

3.

 讓圖片變成一個圓

程式碼：

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

GLUquadric (指標)* sphere =NULL;///指到二次曲面的指標

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage("earth.jpg"); 

    cvCvtColor(img,img, CV_BGR2RGB); 

    glEnable(GL_TEXTURE_2D); 

    GLuint id; 

    glGenTextures(1, &id); 

    glBindTexture(GL_TEXTURE_2D, id); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 

    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);

    gluQuadricTexture(sphere,1);

    gluSphere(sphere,1,30,30);

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10 texture");

    glutDisplayFunc(display);

    myTexture("earth.jpg");

    sphere = gluNewQuadric();

    glutMainLoop();

}

4.

把圖片轉過來

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

GLUquadric * sphere =NULL;

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage("earth.jpg"); 

    cvCvtColor(img,img, CV_BGR2RGB); 

    glEnable(GL_TEXTURE_2D); 

    GLuint id; 

    glGenTextures(1, &id); 

    glBindTexture(GL_TEXTURE_2D, id); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 

    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);

    glPushMatrix();

        glRotatef(91,1,0,0);

        gluQuadricTexture(sphere,1);

        gluSphere(sphere,1,30,30);

    glPopMatrix();//旋轉

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10 texture");

    glutDisplayFunc(display);

    myTexture("earth.jpg");

    sphere = gluNewQuadric();

    glutMainLoop();

}

5.

讓地球自轉

程式碼：

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

GLUquadric * sphere =NULL;

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage("earth.jpg");

    cvCvtColor(img,img, CV_BGR2RGB);

    glEnable(GL_TEXTURE_2D);

    GLuint id;

    glGenTextures(1, &id);

    glBindTexture(GL_TEXTURE_2D, id);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

return id;

}

float angle=0;///初始角度=0

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,1,0,0);

        glRotatef(90,1,0,0);

        gluQuadricTexture(sphere,1);

        gluSphere(sphere,1,30,30);

    glPopMatrix();

    glutSwapBuffers();

    angle++;//控制速度，+越多轉越快

}

int main(int argc, char**argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10 texture");

    glutIdleFunc(display);

    glutDisplayFunc(display);

    myTexture("earth.jpg");

    sphere = gluNewQuadric();

    glEnable(GL_DEPTH_TEST);

    glutMainLoop();

}