2022年4月26日 星期二

瘋狂無敵圖學死亡筆記 Week10

0.用上週改為圖在茶壺上 

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可

#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 (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("OIP.png");

    glutMainLoop();

}

1.背景

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可

#include <opencv/cv.h>

#include <GL/glut.h>


int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename);

    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);

    ///glutSolidTeapot( 0.3 );

    glBegin(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();

    glutSwapBuffers();

}

int main(int argc, char**argv){

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week09 texture");

    glutDisplayFunc(display);

    myTexture("OIP.png");

    glutMainLoop();

}





2.地球

球

gluSphere( sphere, 1, 30, 30 );

參數是(指標,r半徑,slices柳丁切經縣,stack堆疊緯)



#include <opencv/highgui.h> 
#include <opencv/cv.h>
#include <GL/glut.h>
GLUquadric * sphere =NULL; ///指標只到二次曲面
int myTexture(char * filename)
{

    IplImage * img = cvLoadImage(filename); 
    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); ///設好貼圖
    gluSphere(sphere, 1, 30, 30); ///畫圓球
    glutSwapBuffers();

}

int main(int argc, char**argv){

    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week09 texture");


    glutDisplayFunc(display);
    myTexture("OIP.png"); ///地球的地圖，圖等一下準備好
    sphere=gluNewQuadric(); ///準備好二次曲面


    glutMainLoop();

}
2-1能轉動的地球

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可
#include <opencv/cv.h>
#include <GL/glut.h>
GLUquadric * sphere =NULL; ///指標只到二次曲面
int myTexture(char * filename)
{

    IplImage * img = cvLoadImage(filename);
    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;///旋轉角度
void display(){

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();
        glRotatef(angle, 0, 0, 1);
        gluQuadricTexture(sphere, 1); ///設好貼圖
        gluSphere(sphere, 1, 30, 30); ///畫圓球
    glPopMatrix();

    glutSwapBuffers();
    angle+=0.01; ///每次執行dispaly()時angle+1(看電腦好的轉少點)
}

int main(int argc, char**argv){

    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week09 texture");

    glutIdleFunc(display); ///有空idle 呼叫display()
    glutDisplayFunc(display);
    myTexture("OIP.png"); ///地球的地圖，圖等一下準備好
    sphere=gluNewQuadric(); ///準備好二次曲面


    glutMainLoop();

}

#include <opencv/highgui.h> 
#include <opencv/cv.h>
#include <GL/glut.h>
GLUquadric * sphere =NULL; ///指標只到二次曲面
int myTexture(char * filename)
{

    IplImage * img = cvLoadImage(filename);
    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;///旋轉角度
void display(){

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();
        glRotatef(90, 1, 0, 0);///把地球轉正，而非由上往下看
        glRotatef(angle, 0, 0, 1);
        gluQuadricTexture(sphere, 1); ///設好貼圖
        gluSphere(sphere, 1, 30, 30); ///畫圓球
    glPopMatrix();

    glutSwapBuffers();
    angle+=0.01; ///每次執行dispaly()時angle+1(看電腦好的轉少點)
}

int main(int argc, char**argv){

    glutInit( &argc, argv );
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week09 texture");
   
    glEnable(GL_DEPTH_TEST);///開3D深度測試,才會有3D效果(解決破圖)
    glutIdleFunc(display); ///有空idle 呼叫display()
    glutDisplayFunc(display);
    myTexture("OIP.png"); ///地球的地圖，圖等一下準備好
    sphere=gluNewQuadric(); ///準備好二次曲面

    glutMainLoop();

}

3. 貼圖+模型(!做鋼彈咯!!!!!)
    1.下載https://jsyeh.org/3dcg10的window.zip data.zip source.zip(glm.h glm.cpp放在專案目錄)
    2.下載老師買的模型 myGundam 3D模型
    3.工作目錄在 (in C:\Users\User\Desktop\freeglut\bin)
    4.glm.h glm.cpp放在專案main.cpp旁邊
    5.利用上面地球模型改




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