2021年6月14日 星期一

week17-端午

 今天主要是複習

1.做出有打有顏色的茶壺

程式碼: 

#include <GL/glut.h>

void display(){
    glClearColor( 1,0,0,0);  ///用來Clear的Color 用紅色
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
        glColor3f( 1,1,0 );
        glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
int main( int argc, char ** argv )
{
    glutInit( &argc, argv);
    glutInitWindowSize(300,300);
    glutInitWindowPosition(700,200);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("08160554");

    glutDisplayFunc(display);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}

2.再來是茶壺手臂


程式碼:
#include <GL/glut.h>
float angle=90;
float oldX=0;
void mouse(int button, int state, int x, int y){
    oldX = x;
}
void motion( int x, int y ){
    angle += x-oldX;
    oldX = x;
    glutPostRedisplay();///重畫畫面
}
void display(){
    glClearColor( 1,0,0,0);///用來Clear的Color 用紅色
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glColor3f( 1,1,0 );
        glutSolidTeapot( 0.3 );///身體先註解掉身體,只看手臂
        glPushMatrix();
            glTranslatef(-.3, 0, 0);///再把轉動中的手臂,掛到肩上
            glRotatef(angle, 0,0,1);///再轉動它
            glTranslatef(-.3, .1, 0);///移動旋轉中心,放正中心
            glutSolidTeapot(0.3);///左手臂
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
int main( int argc, char ** argv )
{
    glutInit( &argc, argv);
    glutInitWindowSize(300,300);
    glutInitWindowPosition(700,200);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("08160554");

    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutDisplayFunc(display);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}

3.keyboard

程式碼:
#include <GL/glut.h>

float angle[20]={};///先都設成0
int angleID=0;
void keyboard(unsigned char key, int x, int y){
    if(key=='0') angleID=0;
    if(key=='1') angleID=1;
    if(key=='2') angleID=2;
    if(key=='3') angleID=3;
    if(key=='4') angleID=4;
    if(key=='5') angleID=5;
    if(key=='6') angleID=6;
}
///如果關節很多,可能要用迴圈來讓程式只要2行 for(int i=0; i<10; i++)
///可能也要用到英文字母
float oldX=0;
void mouse(int button, int state, int x, int y){
    oldX = x;
}
void motion( int x, int y ){
    angle[angleID] += x-oldX;///0: angle[0], 1: angle[1]..
    oldX = x;
    glutPostRedisplay();
}
void display(){
    glClearColor( 1,0,0,0);///用來Clear的Color 用紅色
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glColor3f( 1,1,0 );
        glutSolidTeapot( 0.3 );///身體先註解掉身體,只看手臂
        glPushMatrix();///左半邊
            glTranslatef(-.3, 0, 0);///再把轉動中的手臂,掛到肩上
            glRotatef(angle[0], 0,0,1);///再轉動它
            glTranslatef(-.3, .1, 0);///移動旋轉中心,放正中心
            glutSolidTeapot(0.3);///左手臂
            glPushMatrix();
                glTranslatef(-.3, 0, 0);///再把轉動中的手臂掛肩上
                glRotatef(angle[1], 0,0,1);///再轉動它
                glTranslatef(-.3, 0, 0);///移動旋轉中心,放正中心
                glutSolidTeapot(0.3);///左手肘
            glPopMatrix();
        glPopMatrix();
        glPushMatrix();///右半邊
            glTranslatef(+.3, 0, 0);///再把轉動中的手臂,掛到肩上
            glRotatef(angle[2], 0,0,1);///再轉動它
            glTranslatef(+.3, .1, 0);///移動旋轉中心,放正中心
            glutSolidTeapot(0.3);///右手臂
            glPushMatrix();
                glTranslatef(+.3, 0, 0);///再把轉動中的手臂掛肩上
                glRotatef(angle[3], 0,0,1);///再轉動它
                glTranslatef(+.3, 0, 0);///移動旋轉中心,放正中心
                glutSolidTeapot(0.3);///右手肘
            glPopMatrix();
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
int main( int argc, char ** argv )
{
    glutInit( &argc, argv);
    glutInitWindowSize(300,300);
    glutInitWindowPosition(700,200);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("08160554");

    glutKeyboardFunc(keyboard);///要有這行, 註冊 keyboard()
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutDisplayFunc(display);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}

4.存檔、讀檔

程式碼:
#include <GL/glut.h>
#include <stdio.h>
FILE * fout = NULL;
FILE * fin = NULL;
float angle[20]={};
int angleID=0;
void keyboard(unsigned char key, int x, int y){
    if(key=='0') angleID=0;
    if(key=='1') angleID=1;
    if(key=='2') angleID=2;
    if(key=='3') angleID=3;
    if(key=='4') angleID=4;
    if(key=='5') angleID=5;
    if(key=='6') angleID=6;
    if(key=='s'){  ///存檔
        if( fout==NULL ) fout = fopen("angle.txt", "w+");
        for(int i=0; i<20; i++) fprintf(fout, "%.2f ", angle[i]);
        fprintf(fout, "\n");
        printf("save angle.txt\n");
    }else if(key=='r'){
///讀檔 (不能和存檔同時做,因angle.txt不能開2次)
        if( fin==NULL ) fin = fopen("angle.txt", "r");
        for(int i=0; i<20; i++) fscanf(fin, "%f", &angle[i]);
        glutPostRedisplay();
        printf("read angle.txt\n");
    }
}

float oldX=0;
void mouse(int button, int state, int x, int y){
    oldX = x;
}
void motion( int x, int y ){
    angle[angleID] += x-oldX;
    oldX = x;
    glutPostRedisplay();
}
void display(){
    glClearColor( 1,0,0,0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glColor3f( 1,1,0 );
        glutSolidTeapot( 0.3 );
        glPushMatrix();
            glTranslatef(-.3, 0, 0);
            glRotatef(angle[0], 0,0,1);
            glTranslatef(-.3, .1, 0);
            glutSolidTeapot(0.3);
            glPushMatrix();
                glTranslatef(-.3, 0, 0);
                glRotatef(angle[1], 0,0,1);
                glTranslatef(-.3, 0, 0);
                glutSolidTeapot(0.3);
            glPopMatrix();
        glPopMatrix();
        glPushMatrix();
            glTranslatef(+.3, 0, 0);
            glRotatef(angle[2], 0,0,1);
            glTranslatef(+.3, .1, 0);
            glutSolidTeapot(0.3);
            glPushMatrix();
                glTranslatef(+.3, 0, 0);
                glRotatef(angle[3], 0,0,1);
                glTranslatef(+.3, 0, 0);
                glutSolidTeapot(0.3);
            glPopMatrix();
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
int main( int argc, char ** argv )
{
    glutInit( &argc, argv);
    glutInitWindowSize(300,300);
    glutInitWindowPosition(700,200);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("08160554");

    glutKeyboardFunc(keyboard);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutDisplayFunc(display);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}
5.動起來

程式碼:

#include <GL/glut.h>
#include <stdio.h>
FILE * fout = NULL;
FILE * fin = NULL;
float angle[20]={}, angleOld[20], angleNew[20];
int angleID=0;
void timer(int t){
    glutTimerFunc( 20, timer, t+1);
    if(t%25==0){
        for(int i=0; i<20; i++) angleOld[i] = angleNew[i];

        if( fin==NULL ) fin = fopen("angle.txt", "r");
        for(int i=0; i<20; i++) fscanf(fin, "%f", &angleNew[i]);
        printf("read angle.txt\n");
    }
    float alpha = (t%25)/25.0;
    for(int i=0; i<20; i++) angle[i] = alpha*angleNew[i]+(1-alpha)*angleOld[i];
    glutPostRedisplay();
}
void keyboard(unsigned char key, int x, int y){
    if(key=='0') angleID=0;
    if(key=='1') angleID=1;
    if(key=='2') angleID=2;
    if(key=='3') angleID=3;
    if(key=='4') angleID=4;
    if(key=='5') angleID=5;
    if(key=='6') angleID=6;
    if(key=='p'){///Play播放
        glutTimerFunc(0, timer, 0);
    }
    if(key=='s'){///存檔
        if( fout==NULL ) fout = fopen("angle.txt", "w+");
        for(int i=0; i<20; i++) fprintf(fout, "%.2f ", angle[i]);
        fprintf(fout, "\n");
        printf("save angle.txt\n");
    }else if(key=='r'){
        if( fin==NULL ) fin = fopen("angle.txt", "r");
        for(int i=0; i<20; i++) fscanf(fin, "%f", &angle[i]);
        glutPostRedisplay();
        printf("read angle.txt\n");
    }
}

float oldX=0;
void mouse(int button, int state, int x, int y){
    oldX = x;
}
void motion( int x, int y ){
    angle[angleID] += x-oldX;
    oldX = x;
    glutPostRedisplay();
}
void display(){
    glClearColor( 1,0,0,0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glColor3f( 1,1,0 );
        glutSolidTeapot( 0.3 );
        glPushMatrix();
            glTranslatef(-.3, 0, 0);
            glRotatef(angle[0], 0,0,1);
            glTranslatef(-.3, .1, 0);
            glutSolidTeapot(0.3);
            glPushMatrix();
                glTranslatef(-.3, 0, 0);
                glRotatef(angle[1], 0,0,1);
                glTranslatef(-.3, 0, 0);
                glutSolidTeapot(0.3);
            glPopMatrix();
        glPopMatrix();
        glPushMatrix();
            glTranslatef(+.3, 0, 0);
            glRotatef(angle[2], 0,0,1);
            glTranslatef(+.3, .1, 0);
            glutSolidTeapot(0.3);
            glPushMatrix();
                glTranslatef(+.3, 0, 0);
                glRotatef(angle[3], 0,0,1);
                glTranslatef(+.3, 0, 0);
                glutSolidTeapot(0.3);
            glPopMatrix();
        glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
int main( int argc, char ** argv )
{
    glutInit( &argc, argv);
    glutInitWindowSize(300,300);
    glutInitWindowPosition(700,200);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("08160554");

    glutKeyboardFunc(keyboard);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutDisplayFunc(display);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}

6.貼圖

程式碼:
#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>
GLuint id1, id2; ///增加2個 貼圖ID
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("week17 review");

    glutDisplayFunc(display);

    id2 = myTexture("background.jpg");
    glEnable(GL_DEPTH_TEST);///3D的深度測試功能要開起來,3D才會正確
    glutMainLoop();
}
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