Week15 課堂作業_01161044劉毓潔

#include <stdio.h>

#include <GL/glut.h>

int angleID=0;

float a=0;

float angle[20]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

float angleold[20]={00,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

float anglenew[20]={90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

void display()

{

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

     glPushMatrix();

      glRotatef(angle[0], 0,0,1);

      glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

FILE *fout=NULL, *fin=NULL;

void time(int t)

{

}

void keyboard(unsigned char key, int x, int y)

{

if(key=='0'){

angleID=1;

}

else if(key=='1'){

angleID=1;

}

else if(key=='2'){

angleID=2;

}

else if(key=='s'){

if(fout==NULL)

fout=fopen("this_is_my_saved_angles.txt","w+");

//fprintf(fout, "%f %f %f %f %f %f)

for(int i=0;i<20;i++)

fprintf(fout,"%f",angle[i]);

fprintf(fout,"\n");

}

else if(key=='r'){

if(fin==NULL) fin=fopen("this is my saved angles.txt","r");

a+=0.1;

angle[0]=angleold[0]*(1-a) + anglenew[0]*a;

if(a>=1){

a=0;

for(int i=0;i<20;i++){

angleold[i]=anglenew[i];

fscanf(fin,"%f", &anglenew[i]);

}

}

glutPostRedisplay();

}

else if(key=='p'){

}

}

float oldX=0, oldY=0;

void mouse(int button, int state, int x, int y){

oldX=x; oldY=y;

}

void motion(int x, int y){

angle[angleID]+= (x-oldX);

oldX=x;

glutPostRedisplay();

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week15");

glutKeyboardFunc(keyboard);

glutDisplayFunc(display);

glutMainLoop();

} 

#include <stdio.h>

#include <GL/glut.h>

int angleID=0;

float a=0;

float angle[20]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

float angleold[20]={00,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

float anglenew[20]={90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

void display()

{

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

     glPushMatrix();

      glRotatef(angle[0], 0,0,1);

      glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

FILE *fout=NULL, *fin=NULL;

void readNext(){

if(fin==NULL) fin=fopen("this_is_my_saved_angles.txt","r");

a+=0.1;

for(int i=0;i<20;i++)

angle[i]=angleold[i]*(1-a) + anglenew[i]*a;

if(a>=1){

a=0;

for(int i=0;i<20;i++){

angleold[i]=anglenew[i];

fscanf(fin,"%f",&anglenew[i]);

}

}

}

void timer(int t)

{

glutTimerFunc(100,timer,0);

readNext();

glutPostRedisplay();

}

void keyboard(unsigned char key, int x, int y)

{

if(key=='0'){

angleID=1;

}

else if(key=='1'){

angleID=1;

}

else if(key=='2'){

angleID=2;

}

else if(key=='s'){

if(fout==NULL)

fout=fopen("this_is_my_saved_angles.txt","w+");

//fprintf(fout, "%f %f %f %f %f %f)

for(int i=0;i<20;i++)

fprintf(fout,"%f",angle[i]);

fprintf(fout,"\n");

}

else if(key=='r'){

readNext();

glutPostRedisplay();

}

else if(key=='p'){

glutTimerFunc(0, timer, 0);

}

}

float oldX=0, oldY=0;

void mouse(int button, int state, int x, int y){

oldX=x; oldY=y;

}

void motion(int x, int y){

angle[angleID]+= (x-oldX);

oldX=x;

glutPostRedisplay();

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week15");

glutKeyboardFunc(keyboard);

glutDisplayFunc(display);

glutMainLoop();

}