week17

 今天是期末總複習

1.做出有顏色的茶壺

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("08160324");

    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.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("08160324");

    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("08160324");

    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.讀檔、存檔

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("08160324");

    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.會動

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("08160324");

    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();

}