yun_電腦圖學筆記week17

 一開始老師先複習上課內容，先做一個茶壺

#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 );///茶壺的顏色 黃色 glutSolidTeapot( 0.3 ); glutSwapBuffers(); } int main( int argc, char ** argv ) { glutInit( &argc, argv); glutInitWindowSize(500,500);///視窗大小 glutInitWindowPosition(0,0);///視窗位置 glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("week17 review"); glutDisplayFunc(display); glutMainLoop(); }

接著打光

#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 );///茶壺的顏色 黃色 glutSolidTeapot( 0.3 ); glutSwapBuffers(); } const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };///打光的程式要放在main之前 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(500,500);///視窗大小 glutInitWindowPosition(0,0);///視窗位置 glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("week17 review"); glutDisplayFunc(display); glEnable(GL_DEPTH_TEST);///深度偵測要開 glDepthFunc(GL_LESS);///要放在main loop之前 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(); }

接著我們加入一個茶壺，並讓滑鼠可以跟著轉動

#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);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle, 0,0,1);///(2)再轉動它 glTranslatef(-.3, .1, 0);///(1)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("week17 review"); 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(); }

接著我們加入按數字控制關節

#include <GL/glut.h> #include <stdio.h> FILE * fout = NULL; FILE * fin = NULL; float angle[20]={};///先都設成0 int angleID=0;///現在要動的關節是誰? 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();///重畫畫面 printf("read angle.txt\n"); } }///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();///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();///左半邊 glTranslatef(-.3, 0, 0);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[0], 0,0,1);///(2)再轉動它 glTranslatef(-.3, .1, 0);///(1)移動旋轉中心,放正中心 glutSolidTeapot(0.3);///左手臂 glPushMatrix(); glTranslatef(-.3, 0, 0);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[1], 0,0,1);///(2)再轉動它 glTranslatef(-.3, 0, 0);///(1)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);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[2], 0,0,1);///(2)再轉動它 glTranslatef(+.3, .1, 0);///(1)移動旋轉中心,放正中心 glutSolidTeapot(0.3);///右手臂 glPushMatrix(); glTranslatef(+.3, 0, 0);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[3], 0,0,1);///(2)再轉動它 glTranslatef(+.3, 0, 0);///(1)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("week17 review"); 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(); }

#include <GL/glut.h> #include <stdio.h> FILE * fout = NULL; FILE * fin = NULL; float angle[20]={};///先都設成0 int angleID=0;///現在要動的關節是誰? 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();///重畫畫面 printf("read angle.txt\n"); } }///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();///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();///左半邊 glTranslatef(-.3, 0, 0);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[0], 0,0,1);///(2)再轉動它 glTranslatef(-.3, .1, 0);///(1)移動旋轉中心,放正中心 glutSolidTeapot(0.3);///左手臂 glPushMatrix(); glTranslatef(-.3, 0, 0);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[1], 0,0,1);///(2)再轉動它 glTranslatef(-.3, 0, 0);///(1)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);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[2], 0,0,1);///(2)再轉動它 glTranslatef(+.3, .1, 0);///(1)移動旋轉中心,放正中心 glutSolidTeapot(0.3);///右手臂 glPushMatrix(); glTranslatef(+.3, 0, 0);///(3)再把轉動中的手臂,掛到肩上 glRotatef(angle[3], 0,0,1);///(2)再轉動它 glTranslatef(+.3, 0, 0);///(1)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("week17 review"); 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(); }