01160235_謝采玲, HW15, Week15

#include <stdio.h>

#include <GL/glut.h>

int angleID=0;

float a=1;

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]={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

float angleNew[20]={0, 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(){

printf("here! %f \n", angle[0]);

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){

printf("here load file !\n");

a=0;

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

angleOld[i]=angleNew[i];

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

printf(" %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+");

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);

glutMouseFunc(mouse);

glutMotionFunc(motion);

glutMainLoop();

}

***檔名要正確!!!
***記得加咒語!!!