week15

#include <GL/glut.h>
float a=0; //內差的比重值
float angle=0;
float angleOld=0;
float angleNew=90;

void display()
{
 glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
 glPushMatrix();
  glRotatef(angle, 0, 0, 1);
  glutSolidTeapot(0.3);
 glPopMatrix();
 glutSwapBuffers();
}

void keyboard(unsigned char key, int x, int y)
{
 if(key=='r'){
  a+=0.1;
  angle = angleOld * (1-a) + angleNew * a; //內插公式
 }
 glutPostRedisplay();
}

int main()
{
 glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
 glutCreateWindow("week15");

 glutKeyboardFunc(keyboard);
 glutDisplayFunc(display);
 glutMainLoop();
}

#include <GL/glut.h>
float a=0; //內差的比重值
float angle[20]={0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
float angleOld[20]={0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
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();
    glPushMatrix();
        glTranslatef(0.5, 0,0);
        glRotatef(angle[1], 0,0,1);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}

void keyboard(unsigned char key, int x, int y)
{
if(key=='r'){
a+=0.1;
for(int i=0;i<=20;i++)
{
angle[i] = angleOld[i] * (1-a) + angleNew[i] * a; //內插公式
}
}
glutPostRedisplay();
}

int main()
{
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("week15");
   
    glutKeyboardFunc(keyboard);
    glutDisplayFunc(display);
    glutMainLoop();
}

#include <GL/glut.h>

float a = 0; //內插法比重 

//有很多個角度都要做內插法怎麼辦? 利用陣列, 就可以存很多個角度了 

float angle[20] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; //用來轉動的角度，由angleOld, angleNew計算出 

float angleOld[20] = {0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; //舊的角度，用來做內插法 

float angleNew[20] = {90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; //新的角度，用來做內插法 

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glRotatef(angle[0], 0,0,1);

glutSolidTeapot(0.3);

glPopMatrix();

glPushMatrix();

glTranslatef(0.5, 0,0);

glRotatef(angle[1], 0,0,1);

glutSolidTeapot(0.3);

glPopMatrix();

glutSwapBuffers();

}

void readNext()

{

a += 0.1; //比重一直增加，角度才會變化 

for( int i=0; i<=20; i++){ //全部打出來太遜了,  用for可以直接打20個,比葉問還厲害! 

angle[i] = angleOld[i] * (1-a) + angleNew[i] * a;

}

}

void timer(int t)

{

glutTimerFunc(100, timer, 0);

readNext();

glutPostRedisplay();

} 

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

{

if (key == 'r'){

readNext();

}

else if (key== 'p'){

glutTimerFunc(0, timer, 0);

 }

 glutPostRedisplay();

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week15");

glutKeyboardFunc(keyboard);

glutDisplayFunc(display);

glutMainLoop();

}

讀取檔案!!!!!!!!!!

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=='s'){

if(fout==NULL) fout = fopen("this_is_my_file_for_animation.txt","w+");

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

printf("%f ",angle[i]);

fprintf(fout, "%f ",angle[i]);  

}

}

printf("\n");

fprintf(fout, "\n");

if (key == 'r'){

readNext();

}

else if (key== 'p'){

glutTimerFunc(0, timer, 0);

}

glutPostRedisplay();

}